diff --git a/packages/libp2p/.aegir.js b/packages/libp2p/.aegir.js
index a0d8cbc706..36fea1dd21 100644
--- a/packages/libp2p/.aegir.js
+++ b/packages/libp2p/.aegir.js
@@ -24,7 +24,9 @@ export default {
       const peerId = await createEd25519PeerId()
       const libp2p = await createLibp2p({
         connectionManager: {
-          inboundConnectionThreshold: Infinity,
+          inboundConnectionThreshold: 1000,
+          maxIncomingPendingConnections: 1000,
+          maxConnections: 1000,
           minConnections: 0
         },
         addresses: {
@@ -51,7 +53,7 @@ export default {
           fetch: fetchService(),
           relay: circuitRelayServer({
             reservations: {
-              maxReservations: Infinity
+              maxReservations: 100000
             }
           })
         }
diff --git a/packages/libp2p/package.json b/packages/libp2p/package.json
index 10b4827403..3b5b1879da 100644
--- a/packages/libp2p/package.json
+++ b/packages/libp2p/package.json
@@ -164,7 +164,8 @@
     "uint8arraylist": "^2.4.3",
     "uint8arrays": "^4.0.6",
     "wherearewe": "^2.0.1",
-    "xsalsa20": "^1.1.0"
+    "xsalsa20": "^1.1.0",
+    "yup": "^1.2.0"
   },
   "devDependencies": {
     "@chainsafe/libp2p-gossipsub": "^10.0.0",
diff --git a/packages/libp2p/src/address-manager/utils.ts b/packages/libp2p/src/address-manager/utils.ts
index 7062446a86..c0b53ec010 100644
--- a/packages/libp2p/src/address-manager/utils.ts
+++ b/packages/libp2p/src/address-manager/utils.ts
@@ -1,3 +1,8 @@
+import { type ObjectSchema, object, array, string, mixed } from 'yup'
+import { validateMultiaddr } from '../config/helpers.js'
+import type { AddressManagerInit } from '.'
+import type { Multiaddr } from '@multiformats/multiaddr'
+
 export function debounce (func: () => void, wait: number): () => void {
   let timeout: ReturnType<typeof setTimeout> | undefined
 
@@ -11,3 +16,12 @@ export function debounce (func: () => void, wait: number): () => void {
     timeout = setTimeout(later, wait)
   }
 }
+
+export function validateAddressManagerConfig (opts: AddressManagerInit): ObjectSchema<Record<string, unknown>> {
+  return object({
+    listen: array().of(string()).test('is multiaddr', validateMultiaddr).default([]),
+    announce: array().of(string()).test('is multiaddr', validateMultiaddr).default([]),
+    noAnnounce: array().of(string()).test('is multiaddr', validateMultiaddr).default([]),
+    announceFilter: mixed().default(() => (addrs: Multiaddr[]): Multiaddr[] => addrs)
+  })
+}
diff --git a/packages/libp2p/src/autonat/index.ts b/packages/libp2p/src/autonat/index.ts
index 3f70e6a850..319493d39b 100644
--- a/packages/libp2p/src/autonat/index.ts
+++ b/packages/libp2p/src/autonat/index.ts
@@ -31,6 +31,7 @@ import map from 'it-map'
 import parallel from 'it-parallel'
 import { pipe } from 'it-pipe'
 import isPrivateIp from 'private-ip'
+import { number, object, string } from 'yup'
 import { codes } from '../errors.js'
 import {
   MAX_INBOUND_STREAMS,
@@ -108,14 +109,23 @@ class DefaultAutoNATService implements Startable {
   private started: boolean
 
   constructor (components: AutoNATComponents, init: AutoNATServiceInit) {
+    const validatedConfig = object({
+      protocolPrefix: string().default(PROTOCOL_PREFIX),
+      timeout: number().integer().default(TIMEOUT),
+      startupDelay: number().integer().default(STARTUP_DELAY),
+      refreshInterval: number().integer().default(REFRESH_INTERVAL),
+      maxInboundStreams: number().integer().default(MAX_INBOUND_STREAMS),
+      maxOutboundStreams: number().integer().default(MAX_OUTBOUND_STREAMS)
+    }).validateSync(init)
+
     this.components = components
     this.started = false
-    this.protocol = `/${init.protocolPrefix ?? PROTOCOL_PREFIX}/${PROTOCOL_NAME}/${PROTOCOL_VERSION}`
-    this.timeout = init.timeout ?? TIMEOUT
-    this.maxInboundStreams = init.maxInboundStreams ?? MAX_INBOUND_STREAMS
-    this.maxOutboundStreams = init.maxOutboundStreams ?? MAX_OUTBOUND_STREAMS
-    this.startupDelay = init.startupDelay ?? STARTUP_DELAY
-    this.refreshInterval = init.refreshInterval ?? REFRESH_INTERVAL
+    this.protocol = `/${validatedConfig.protocolPrefix}/${PROTOCOL_NAME}/${PROTOCOL_VERSION}`
+    this.timeout = validatedConfig.timeout
+    this.maxInboundStreams = validatedConfig.maxInboundStreams
+    this.maxOutboundStreams = validatedConfig.maxOutboundStreams
+    this.startupDelay = validatedConfig.startupDelay
+    this.refreshInterval = validatedConfig.refreshInterval
     this._verifyExternalAddresses = this._verifyExternalAddresses.bind(this)
   }
 
diff --git a/packages/libp2p/src/circuit-relay/constants.ts b/packages/libp2p/src/circuit-relay/constants.ts
index d35f45881a..7907ed5817 100644
--- a/packages/libp2p/src/circuit-relay/constants.ts
+++ b/packages/libp2p/src/circuit-relay/constants.ts
@@ -70,3 +70,8 @@ export const DEFAULT_HOP_TIMEOUT = 30 * second
  * How long to wait before starting to advertise the relay service
  */
 export const DEFAULT_ADVERT_BOOT_DELAY = 30 * second
+
+/**
+ * The default timeout for Incoming STOP requests from the relay
+ */
+export const DEFAULT_STOP_TIMEOUT = 30 * second
diff --git a/packages/libp2p/src/circuit-relay/server/index.ts b/packages/libp2p/src/circuit-relay/server/index.ts
index aed3d5be8b..758db09e4d 100644
--- a/packages/libp2p/src/circuit-relay/server/index.ts
+++ b/packages/libp2p/src/circuit-relay/server/index.ts
@@ -6,10 +6,16 @@ import { RecordEnvelope } from '@libp2p/peer-record'
 import { type Multiaddr, multiaddr } from '@multiformats/multiaddr'
 import { pbStream, type ProtobufStream } from 'it-protobuf-stream'
 import pDefer from 'p-defer'
+import { object, number, boolean } from 'yup'
 import { MAX_CONNECTIONS } from '../../connection-manager/constants.js'
+import { DEFAULT_MAX_INBOUND_STREAMS, DEFAULT_MAX_OUTBOUND_STREAMS } from '../../registrar.js'
 import {
   CIRCUIT_PROTO_CODE,
+  DEFAULT_DURATION_LIMIT,
   DEFAULT_HOP_TIMEOUT,
+  DEFAULT_MAX_RESERVATION_CLEAR_INTERVAL,
+  DEFAULT_MAX_RESERVATION_STORE_SIZE,
+  DEFAULT_MAX_RESERVATION_TTL,
   RELAY_SOURCE_TAG,
   RELAY_V2_HOP_CODEC,
   RELAY_V2_STOP_CODEC
@@ -95,10 +101,6 @@ export interface RelayServerEvents {
   'relay:advert:error': CustomEvent<Error>
 }
 
-const defaults = {
-  maxOutboundStopStreams: MAX_CONNECTIONS
-}
-
 class CircuitRelayServer extends EventEmitter<RelayServerEvents> implements Startable, CircuitRelayService {
   private readonly registrar: Registrar
   private readonly peerStore: PeerStore
@@ -121,6 +123,20 @@ class CircuitRelayServer extends EventEmitter<RelayServerEvents> implements Star
   constructor (components: CircuitRelayServerComponents, init: CircuitRelayServerInit = {}) {
     super()
 
+    const validatedConfig = object({
+      hopTimeout: number().min(0).integer().default(DEFAULT_HOP_TIMEOUT),
+      reservations: object({
+        maxReservations: number().integer().min(0).default(DEFAULT_MAX_RESERVATION_STORE_SIZE),
+        reservationClearInterval: number().integer().min(0).default(DEFAULT_MAX_RESERVATION_CLEAR_INTERVAL),
+        applyDefaultLimit: boolean().default(true),
+        reservationTtl: number().integer().min(0).default(DEFAULT_MAX_RESERVATION_TTL),
+        defaultDurationLimit: number().integer().min(0).default(DEFAULT_DURATION_LIMIT).max(init?.reservations?.reservationTtl ?? DEFAULT_MAX_RESERVATION_TTL, `default duration limit must be less than reservation TTL: ${init?.reservations?.reservationTtl}`)
+      }),
+      maxInboundHopStreams: number().integer().min(0).default(DEFAULT_MAX_INBOUND_STREAMS),
+      maxOutboundHopStreams: number().integer().min(0).default(DEFAULT_MAX_OUTBOUND_STREAMS),
+      maxOutboundStopStreams: number().integer().min(0).default(MAX_CONNECTIONS)
+    }).validateSync(init)
+
     this.registrar = components.registrar
     this.peerStore = components.peerStore
     this.addressManager = components.addressManager
@@ -128,11 +144,11 @@ class CircuitRelayServer extends EventEmitter<RelayServerEvents> implements Star
     this.connectionManager = components.connectionManager
     this.connectionGater = components.connectionGater
     this.started = false
-    this.hopTimeout = init?.hopTimeout ?? DEFAULT_HOP_TIMEOUT
+    this.hopTimeout = validatedConfig.hopTimeout
     this.shutdownController = new AbortController()
-    this.maxInboundHopStreams = init.maxInboundHopStreams
-    this.maxOutboundHopStreams = init.maxOutboundHopStreams
-    this.maxOutboundStopStreams = init.maxOutboundStopStreams ?? defaults.maxOutboundStopStreams
+    this.maxInboundHopStreams = validatedConfig.maxInboundHopStreams
+    this.maxOutboundHopStreams = validatedConfig.maxOutboundHopStreams
+    this.maxOutboundStopStreams = validatedConfig.maxOutboundStopStreams
 
     try {
       // fails on node < 15.4
diff --git a/packages/libp2p/src/circuit-relay/server/reservation-store.ts b/packages/libp2p/src/circuit-relay/server/reservation-store.ts
index 0f5d3bf62e..36a747c99c 100644
--- a/packages/libp2p/src/circuit-relay/server/reservation-store.ts
+++ b/packages/libp2p/src/circuit-relay/server/reservation-store.ts
@@ -1,4 +1,5 @@
 import { PeerMap } from '@libp2p/peer-collections'
+import { object, mixed, number, boolean } from 'yup'
 import { DEFAULT_DATA_LIMIT, DEFAULT_DURATION_LIMIT, DEFAULT_MAX_RESERVATION_CLEAR_INTERVAL, DEFAULT_MAX_RESERVATION_STORE_SIZE, DEFAULT_MAX_RESERVATION_TTL } from '../constants.js'
 import { type Limit, Status } from '../pb/index.js'
 import type { RelayReservation } from '../index.js'
@@ -50,12 +51,21 @@ export class ReservationStore implements Startable {
   private readonly defaultDataLimit: bigint
 
   constructor (options: ReservationStoreOptions = {}) {
-    this.maxReservations = options.maxReservations ?? DEFAULT_MAX_RESERVATION_STORE_SIZE
-    this.reservationClearInterval = options.reservationClearInterval ?? DEFAULT_MAX_RESERVATION_CLEAR_INTERVAL
-    this.applyDefaultLimit = options.applyDefaultLimit !== false
-    this.reservationTtl = options.reservationTtl ?? DEFAULT_MAX_RESERVATION_TTL
-    this.defaultDurationLimit = options.defaultDurationLimit ?? DEFAULT_DURATION_LIMIT
-    this.defaultDataLimit = options.defaultDataLimit ?? DEFAULT_DATA_LIMIT
+    const validatedConfig = object({
+      maxReservations: number().min(0).integer().default(DEFAULT_MAX_RESERVATION_STORE_SIZE),
+      reservationClearInterval: number().integer().min(0).default(DEFAULT_MAX_RESERVATION_CLEAR_INTERVAL),
+      applyDefaultLimit: boolean().default(true),
+      reservationTtl: number().integer().min(0).default(DEFAULT_MAX_RESERVATION_TTL),
+      defaultDurationLimit: number().integer().min(0).default(DEFAULT_DURATION_LIMIT),
+      defaultDataLimit: mixed().test('is-bigint', 'Invalid bigint', value => typeof value === 'bigint').default(DEFAULT_DATA_LIMIT)
+    }).validateSync(options)
+
+    this.maxReservations = validatedConfig.maxReservations
+    this.reservationClearInterval = validatedConfig.reservationClearInterval
+    this.applyDefaultLimit = validatedConfig.applyDefaultLimit
+    this.reservationTtl = validatedConfig.reservationTtl
+    this.defaultDurationLimit = validatedConfig.defaultDurationLimit
+    this.defaultDataLimit = validatedConfig.defaultDataLimit as bigint
   }
 
   isStarted (): boolean {
diff --git a/packages/libp2p/src/circuit-relay/transport/index.ts b/packages/libp2p/src/circuit-relay/transport/index.ts
index 483f9a0366..6125c55b20 100644
--- a/packages/libp2p/src/circuit-relay/transport/index.ts
+++ b/packages/libp2p/src/circuit-relay/transport/index.ts
@@ -6,9 +6,10 @@ import { streamToMaConnection } from '@libp2p/utils/stream-to-ma-conn'
 import * as mafmt from '@multiformats/mafmt'
 import { multiaddr } from '@multiformats/multiaddr'
 import { pbStream } from 'it-protobuf-stream'
+import { number, object } from 'yup'
 import { MAX_CONNECTIONS } from '../../connection-manager/constants.js'
 import { codes } from '../../errors.js'
-import { CIRCUIT_PROTO_CODE, RELAY_V2_HOP_CODEC, RELAY_V2_STOP_CODEC } from '../constants.js'
+import { CIRCUIT_PROTO_CODE, DEFAULT_STOP_TIMEOUT, RELAY_V2_HOP_CODEC, RELAY_V2_STOP_CODEC } from '../constants.js'
 import { StopMessage, HopMessage, Status } from '../pb/index.js'
 import { RelayDiscovery, type RelayDiscoveryComponents } from './discovery.js'
 import { createListener } from './listener.js'
@@ -100,12 +101,6 @@ export interface CircuitRelayTransportInit extends RelayStoreInit {
   reservationCompletionTimeout?: number
 }
 
-const defaults = {
-  maxInboundStopStreams: MAX_CONNECTIONS,
-  maxOutboundStopStreams: MAX_CONNECTIONS,
-  stopTimeout: 30000
-}
-
 class CircuitRelayTransport implements Transport {
   private readonly discovery?: RelayDiscovery
   private readonly registrar: Registrar
@@ -116,12 +111,19 @@ class CircuitRelayTransport implements Transport {
   private readonly addressManager: AddressManager
   private readonly connectionGater: ConnectionGater
   private readonly reservationStore: ReservationStore
-  private readonly maxInboundStopStreams: number
+  private readonly maxInboundStopStreams?: number
   private readonly maxOutboundStopStreams?: number
-  private readonly stopTimeout: number
+  private readonly stopTimeout?: number
   private started: boolean
 
   constructor (components: CircuitRelayTransportComponents, init: CircuitRelayTransportInit) {
+    const validatedConfig = object({
+      discoverRelays: number().min(0).integer().default(0),
+      maxInboundStopStreams: number().min(0).integer().default(MAX_CONNECTIONS),
+      maxOutboundStopStreams: number().min(0).integer().default(MAX_CONNECTIONS),
+      stopTimeout: number().min(0).integer().default(DEFAULT_STOP_TIMEOUT)
+    }).validateSync(init)
+
     this.registrar = components.registrar
     this.peerStore = components.peerStore
     this.connectionManager = components.connectionManager
@@ -129,11 +131,11 @@ class CircuitRelayTransport implements Transport {
     this.upgrader = components.upgrader
     this.addressManager = components.addressManager
     this.connectionGater = components.connectionGater
-    this.maxInboundStopStreams = init.maxInboundStopStreams ?? defaults.maxInboundStopStreams
-    this.maxOutboundStopStreams = init.maxOutboundStopStreams ?? defaults.maxOutboundStopStreams
-    this.stopTimeout = init.stopTimeout ?? defaults.stopTimeout
+    this.maxInboundStopStreams = validatedConfig.maxInboundStopStreams
+    this.maxOutboundStopStreams = validatedConfig.maxOutboundStopStreams
+    this.stopTimeout = validatedConfig.stopTimeout
 
-    if (init.discoverRelays != null && init.discoverRelays > 0) {
+    if (validatedConfig.discoverRelays > 0) {
       this.discovery = new RelayDiscovery(components)
       this.discovery.addEventListener('relay:discover', (evt) => {
         this.reservationStore.addRelay(evt.detail, 'discovered')
@@ -321,7 +323,7 @@ class CircuitRelayTransport implements Transport {
    * An incoming STOP request means a remote peer wants to dial us via a relay
    */
   async onStop ({ connection, stream }: IncomingStreamData): Promise<void> {
-    const signal = AbortSignal.timeout(this.stopTimeout)
+    const signal = AbortSignal.timeout(this.stopTimeout ?? DEFAULT_STOP_TIMEOUT)
     const pbstr = pbStream(stream).pb(StopMessage)
     const request = await pbstr.read({
       signal
diff --git a/packages/libp2p/src/config.ts b/packages/libp2p/src/config.ts
deleted file mode 100644
index a9b83fb532..0000000000
--- a/packages/libp2p/src/config.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import { CodeError } from '@libp2p/interface/errors'
-import { FaultTolerance } from '@libp2p/interface/transport'
-import { defaultAddressSort } from '@libp2p/utils/address-sort'
-import { dnsaddrResolver } from '@multiformats/multiaddr/resolvers'
-import mergeOptions from 'merge-options'
-import { codes, messages } from './errors.js'
-import type { Libp2pInit } from './index.js'
-import type { ServiceMap, RecursivePartial } from '@libp2p/interface'
-import type { Multiaddr } from '@multiformats/multiaddr'
-
-const DefaultConfig: Partial<Libp2pInit> = {
-  addresses: {
-    listen: [],
-    announce: [],
-    noAnnounce: [],
-    announceFilter: (multiaddrs: Multiaddr[]) => multiaddrs
-  },
-  connectionManager: {
-    resolvers: {
-      dnsaddr: dnsaddrResolver
-    },
-    addressSorter: defaultAddressSort
-  },
-  transportManager: {
-    faultTolerance: FaultTolerance.FATAL_ALL
-  }
-}
-
-export function validateConfig <T extends ServiceMap = Record<string, unknown>> (opts: RecursivePartial<Libp2pInit<T>>): Libp2pInit<T> {
-  const resultingOptions: Libp2pInit<T> = mergeOptions(DefaultConfig, opts)
-
-  if (resultingOptions.transports == null || resultingOptions.transports.length < 1) {
-    throw new CodeError(messages.ERR_TRANSPORTS_REQUIRED, codes.ERR_TRANSPORTS_REQUIRED)
-  }
-
-  if (resultingOptions.connectionProtector === null && globalThis.process?.env?.LIBP2P_FORCE_PNET != null) { // eslint-disable-line no-undef
-    throw new CodeError(messages.ERR_PROTECTOR_REQUIRED, codes.ERR_PROTECTOR_REQUIRED)
-  }
-
-  return resultingOptions
-}
diff --git a/packages/libp2p/src/config/config.ts b/packages/libp2p/src/config/config.ts
new file mode 100644
index 0000000000..fb928825eb
--- /dev/null
+++ b/packages/libp2p/src/config/config.ts
@@ -0,0 +1,44 @@
+import { FaultTolerance } from '@libp2p/interface/transport'
+import { publicAddressesFirst } from '@libp2p/utils/address-sort'
+import { dnsaddrResolver } from '@multiformats/multiaddr/resolvers'
+import mergeOptions from 'merge-options'
+import { object } from 'yup'
+import { validateAddressManagerConfig } from '../address-manager/utils.js'
+import { validateConnectionManagerConfig } from '../connection-manager/utils.js'
+import type { AddressManagerInit } from '../address-manager'
+import type { ConnectionManagerInit } from '../connection-manager/index.js'
+import type { Libp2pInit } from '../index.js'
+import type { ServiceMap, RecursivePartial } from '@libp2p/interface'
+
+const DefaultConfig: Partial<Libp2pInit> = {
+  connectionManager: {
+    resolvers: {
+      dnsaddr: dnsaddrResolver
+    },
+    addressSorter: publicAddressesFirst
+  },
+  transportManager: {
+    faultTolerance: FaultTolerance.FATAL_ALL
+  }
+}
+
+export function validateConfig <T extends ServiceMap = Record<string, unknown>> (opts: RecursivePartial<Libp2pInit<T>>): Libp2pInit<T> {
+  const libp2pConfig = object({
+    addresses: validateAddressManagerConfig(opts?.addresses as AddressManagerInit),
+    connectionManager: validateConnectionManagerConfig(opts?.connectionManager as ConnectionManagerInit)
+  })
+
+  if ((opts?.services) != null) {
+    // @ts-expect-error until we resolve https://github.com/libp2p/js-libp2p/pull/1762 and have a better way of discovering type dependencies
+    // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
+    if ((opts.services?.kadDHT || opts.services?.relay || opts.services?.ping) && !opts.services.identify) {
+      throw new Error('identify service is required when using kadDHT, relay, or ping')
+    }
+  }
+
+  const parsedOpts = libp2pConfig.validateSync(opts)
+
+  const resultingOptions: Libp2pInit<T> = mergeOptions(DefaultConfig, parsedOpts)
+
+  return resultingOptions
+}
diff --git a/packages/libp2p/src/config/helpers.ts b/packages/libp2p/src/config/helpers.ts
new file mode 100644
index 0000000000..9cb4106ae8
--- /dev/null
+++ b/packages/libp2p/src/config/helpers.ts
@@ -0,0 +1,12 @@
+import { multiaddr } from '@multiformats/multiaddr'
+
+export const validateMultiaddr = (value: Array<string | undefined> | undefined): boolean => {
+  value?.forEach((addr) => {
+    try {
+      multiaddr(addr)
+    } catch (err) {
+      throw new Error(`invalid multiaddr: ${addr}`)
+    }
+  })
+  return true
+}
diff --git a/packages/libp2p/src/connection-manager/utils.ts b/packages/libp2p/src/connection-manager/utils.ts
index e195e48bf6..760461beab 100644
--- a/packages/libp2p/src/connection-manager/utils.ts
+++ b/packages/libp2p/src/connection-manager/utils.ts
@@ -2,6 +2,10 @@ import { setMaxListeners } from 'events'
 import { logger } from '@libp2p/logger'
 import { type AbortOptions, multiaddr, type Multiaddr } from '@multiformats/multiaddr'
 import { type ClearableSignal, anySignal } from 'any-signal'
+import { type ObjectSchema, array, number, object, string } from 'yup'
+import { validateMultiaddr } from '../config/helpers.js'
+import { AUTO_DIAL_CONCURRENCY, AUTO_DIAL_INTERVAL, AUTO_DIAL_PRIORITY, DIAL_TIMEOUT, INBOUND_CONNECTION_THRESHOLD, INBOUND_UPGRADE_TIMEOUT, MAX_CONNECTIONS, MAX_INCOMING_PENDING_CONNECTIONS, MAX_PARALLEL_DIALS, MAX_PARALLEL_DIALS_PER_PEER, MAX_PEER_ADDRS_TO_DIAL, MIN_CONNECTIONS } from './constants.js'
+import type { ConnectionManagerInit } from '.'
 
 const log = logger('libp2p:connection-manager:utils')
 
@@ -73,3 +77,22 @@ export function combineSignals (...signals: Array<AbortSignal | undefined>): Cle
 
   return signal
 }
+
+export const validateConnectionManagerConfig = (opts: ConnectionManagerInit): ObjectSchema<Record<string, unknown>> => {
+  return object({
+    maxConnections: number().min(opts?.minConnections ?? MIN_CONNECTIONS, `maxConnections must be greater than the min connections limit: ${opts?.minConnections}`).integer().default(MAX_CONNECTIONS),
+    minConnections: number().min(0).integer().max(opts?.maxConnections ?? MAX_CONNECTIONS, `minConnections must be less than the max connections limit: ${opts?.maxConnections}`).default(MIN_CONNECTIONS),
+    autoDialInterval: number().min(0).integer().default(AUTO_DIAL_INTERVAL),
+    autoDialConcurrency: number().min(0).integer().default(AUTO_DIAL_CONCURRENCY),
+    autoDialPriority: number().min(0).integer().default(AUTO_DIAL_PRIORITY),
+    maxParallelDials: number().min(0).integer().default(MAX_PARALLEL_DIALS),
+    maxParallelDialsPerPeer: number().max(opts?.autoDialConcurrency ?? AUTO_DIAL_CONCURRENCY, `maxParallelDialsPerPeer must be less than the min auto dial conccurency limit: ${opts?.autoDialConcurrency}`).default(MAX_PARALLEL_DIALS_PER_PEER),
+    maxPeerAddrsToDialed: number().min(0).integer().default(MAX_PEER_ADDRS_TO_DIAL),
+    dialTimeout: number().min(0).integer().default(DIAL_TIMEOUT),
+    inboundUpgradeTimeout: number().integer().default(INBOUND_UPGRADE_TIMEOUT),
+    allow: array().of(string()).test('is multiaddr', validateMultiaddr).optional(),
+    deny: array().of(string()).test('is multiaddr', validateMultiaddr).optional(),
+    inboundConnectionThreshold: number().max(opts?.maxConnections ?? MAX_CONNECTIONS, `inboundConnectionThreshold must be less than the max connections limit: ${opts?.inboundConnectionThreshold}`).integer().default(INBOUND_CONNECTION_THRESHOLD),
+    maxIncomingPendingConnections: number().integer().max(opts?.maxConnections ?? MAX_CONNECTIONS, `maxIncomingPendingConnections must be less than the max connections limit: ${opts?.maxIncomingPendingConnections}`).default(MAX_INCOMING_PENDING_CONNECTIONS)
+  })
+}
diff --git a/packages/libp2p/src/dcutr/dcutr.ts b/packages/libp2p/src/dcutr/dcutr.ts
index 190766bfa2..6639a356f1 100644
--- a/packages/libp2p/src/dcutr/dcutr.ts
+++ b/packages/libp2p/src/dcutr/dcutr.ts
@@ -5,6 +5,7 @@ import { Circuit, IP, DNS } from '@multiformats/multiaddr-matcher'
 import delay from 'delay'
 import { pbStream } from 'it-protobuf-stream'
 import isPrivate from 'private-ip'
+import { number, object } from 'yup'
 import { codes } from '../errors.js'
 import { HolePunch } from './pb/message.js'
 import { multicodec } from './index.js'
@@ -24,15 +25,6 @@ const MAX_DCUTR_MESSAGE_SIZE = 1024 * 4
 // ensure the dial has a high priority to jump to the head of the dial queue
 const DCUTR_DIAL_PRIORITY = 100
 
-const defaultValues = {
-  // https://github.com/libp2p/go-libp2p/blob/8d2e54e1637041d5cf4fac1e531287560bd1f4ac/p2p/protocol/holepunch/holepuncher.go#L27
-  timeout: 5000,
-  // https://github.com/libp2p/go-libp2p/blob/8d2e54e1637041d5cf4fac1e531287560bd1f4ac/p2p/protocol/holepunch/holepuncher.go#L28
-  retries: 3,
-  maxInboundStreams: 1,
-  maxOutboundStreams: 1
-}
-
 export class DefaultDCUtRService implements Startable {
   private started: boolean
   private readonly timeout: number
@@ -54,10 +46,19 @@ export class DefaultDCUtRService implements Startable {
     this.connectionManager = components.connectionManager
     this.transportManager = components.transportManager
 
-    this.timeout = init.timeout ?? defaultValues.timeout
-    this.retries = init.retries ?? defaultValues.retries
-    this.maxInboundStreams = init.maxInboundStreams ?? defaultValues.maxInboundStreams
-    this.maxOutboundStreams = init.maxOutboundStreams ?? defaultValues.maxOutboundStreams
+    const validatedConfig = object({
+      // https://github.com/libp2p/go-libp2p/blob/8d2e54e1637041d5cf4fac1e531287560bd1f4ac/p2p/protocol/holepunch/holepuncher.go#L27
+      timeout: number().integer().default(5000).min(1),
+      // https://github.com/libp2p/go-libp2p/blob/8d2e54e1637041d5cf4fac1e531287560bd1f4ac/p2p/protocol/holepunch/holepuncher.go#L28
+      retries: number().integer().default(3).min(1),
+      maxInboundStreams: number().integer().default(1).min(1),
+      maxOutboundStreams: number().integer().default(1).min(1)
+    }).validateSync(init)
+
+    this.timeout = validatedConfig.timeout
+    this.retries = validatedConfig.retries
+    this.maxInboundStreams = validatedConfig.maxInboundStreams
+    this.maxOutboundStreams = validatedConfig.maxOutboundStreams
   }
 
   isStarted (): boolean {
diff --git a/packages/libp2p/src/fetch/constants.ts b/packages/libp2p/src/fetch/constants.ts
index cbab081bcd..d0be9327b2 100644
--- a/packages/libp2p/src/fetch/constants.ts
+++ b/packages/libp2p/src/fetch/constants.ts
@@ -1,3 +1,7 @@
 // https://github.com/libp2p/specs/tree/master/fetch#wire-protocol
 export const PROTOCOL_VERSION = '0.0.1'
 export const PROTOCOL_NAME = 'fetch'
+
+export const MAX_INBOUND_STREAMS = 1
+export const MAX_OUTBOUND_STREAMS = 1
+export const TIMEOUT = 60000
diff --git a/packages/libp2p/src/fetch/index.ts b/packages/libp2p/src/fetch/index.ts
index 604fb15f3b..378919526b 100644
--- a/packages/libp2p/src/fetch/index.ts
+++ b/packages/libp2p/src/fetch/index.ts
@@ -6,8 +6,9 @@ import * as lp from 'it-length-prefixed'
 import { pipe } from 'it-pipe'
 import { fromString as uint8arrayFromString } from 'uint8arrays/from-string'
 import { toString as uint8arrayToString } from 'uint8arrays/to-string'
+import { number, object, string } from 'yup'
 import { codes } from '../errors.js'
-import { PROTOCOL_NAME, PROTOCOL_VERSION } from './constants.js'
+import { MAX_INBOUND_STREAMS, MAX_OUTBOUND_STREAMS, PROTOCOL_NAME, PROTOCOL_VERSION, TIMEOUT } from './constants.js'
 import { FetchRequest, FetchResponse } from './pb/proto.js'
 import type { AbortOptions } from '@libp2p/interface'
 import type { Stream } from '@libp2p/interface/connection'
@@ -18,8 +19,6 @@ import type { IncomingStreamData, Registrar } from '@libp2p/interface-internal/r
 
 const log = logger('libp2p:fetch')
 
-const DEFAULT_TIMEOUT = 10000
-
 export interface FetchServiceInit {
   protocolPrefix?: string
   maxInboundStreams?: number
@@ -94,15 +93,27 @@ class DefaultFetchService implements Startable, FetchService {
   private readonly components: FetchServiceComponents
   private readonly lookupFunctions: Map<string, LookupFunction>
   private started: boolean
-  private readonly init: FetchServiceInit
+  private readonly timeout: number
+  private readonly maxInboundStreams: number
+  private readonly maxOutboundStreams: number
 
   constructor (components: FetchServiceComponents, init: FetchServiceInit) {
+    const validatedConfig = object({
+      protocolPrefix: string().default('libp2p'),
+      timeout: number().integer().default(TIMEOUT),
+      maxInboundStreams: number().integer().min(0).default(MAX_INBOUND_STREAMS),
+      maxOutboundStreams: number().integer().min(0).default(MAX_OUTBOUND_STREAMS)
+    }).validateSync(init)
+
     this.started = false
     this.components = components
-    this.protocol = `/${init.protocolPrefix ?? 'libp2p'}/${PROTOCOL_NAME}/${PROTOCOL_VERSION}`
+    this.protocol = `/${validatedConfig.protocolPrefix}/${PROTOCOL_NAME}/${PROTOCOL_VERSION}`
+    this.timeout = validatedConfig.timeout
+    this.maxInboundStreams = validatedConfig.maxInboundStreams
+    this.maxOutboundStreams = validatedConfig.maxOutboundStreams
+
     this.lookupFunctions = new Map() // Maps key prefix to value lookup function
     this.handleMessage = this.handleMessage.bind(this)
-    this.init = init
   }
 
   async start (): Promise<void> {
@@ -115,8 +126,8 @@ class DefaultFetchService implements Startable, FetchService {
           log.error(err)
         })
     }, {
-      maxInboundStreams: this.init.maxInboundStreams,
-      maxOutboundStreams: this.init.maxOutboundStreams
+      maxInboundStreams: this.maxInboundStreams,
+      maxOutboundStreams: this.maxOutboundStreams
     })
     this.started = true
   }
@@ -143,8 +154,8 @@ class DefaultFetchService implements Startable, FetchService {
 
     // create a timeout if no abort signal passed
     if (signal == null) {
-      log('using default timeout of %d ms', this.init.timeout)
-      signal = AbortSignal.timeout(this.init.timeout ?? DEFAULT_TIMEOUT)
+      log('using default timeout of %d ms', this.timeout)
+      signal = AbortSignal.timeout(this.timeout)
 
       try {
         // fails on node < 15.4
diff --git a/packages/libp2p/src/identify/consts.ts b/packages/libp2p/src/identify/consts.ts
index e65f222951..ae3356018e 100644
--- a/packages/libp2p/src/identify/consts.ts
+++ b/packages/libp2p/src/identify/consts.ts
@@ -5,8 +5,21 @@ export const AGENT_VERSION = `js-libp2p/${version}`
 export const MULTICODEC_IDENTIFY = '/ipfs/id/1.0.0' // deprecated
 export const MULTICODEC_IDENTIFY_PUSH = '/ipfs/id/push/1.0.0' // deprecated
 
+export const PROTOCOL_PREFIX = 'ipfs'
+export const MAX_IDENTIFY_MESSAGE_SIZE = 1024 * 8 // https://github.com/libp2p/go-libp2p/blob/8d2e54e1637041d5cf4fac1e531287560bd1f4ac/p2p/protocol/identify/id.go#L52
+export const MAX_INBOUND_STREAMS = 1
+export const MAX_OUTBOUND_STREAMS = 1
+export const MAX_PUSH_INCOMING_STREAMS = 1
+export const MAX_PUSH_OUTGOING_STREAMS = 1
+export const MAX_OBSERVED_ADDRESSES = 10
+
+export const RUN_ON_TRANSIENT_CONNECTION = true
+export const RUN_ON_CONNECTION_OPEN = true
+
 export const IDENTIFY_PROTOCOL_VERSION = '0.1.0'
 export const MULTICODEC_IDENTIFY_PROTOCOL_NAME = 'id'
 export const MULTICODEC_IDENTIFY_PUSH_PROTOCOL_NAME = 'id/push'
 export const MULTICODEC_IDENTIFY_PROTOCOL_VERSION = '1.0.0'
 export const MULTICODEC_IDENTIFY_PUSH_PROTOCOL_VERSION = '1.0.0'
+
+export const TIMEOUT = 60000
diff --git a/packages/libp2p/src/identify/identify.ts b/packages/libp2p/src/identify/identify.ts
index caa5248b45..3e992da045 100644
--- a/packages/libp2p/src/identify/identify.ts
+++ b/packages/libp2p/src/identify/identify.ts
@@ -8,6 +8,7 @@ import { pbStream } from 'it-protobuf-stream'
 import { fromString as uint8ArrayFromString } from 'uint8arrays/from-string'
 import { toString as uint8ArrayToString } from 'uint8arrays/to-string'
 import { isNode, isBrowser, isWebWorker, isElectronMain, isElectronRenderer, isReactNative } from 'wherearewe'
+import { boolean, number, object, string } from 'yup'
 import { codes } from '../errors.js'
 import {
   AGENT_VERSION,
@@ -15,7 +16,17 @@ import {
   MULTICODEC_IDENTIFY_PROTOCOL_NAME,
   MULTICODEC_IDENTIFY_PUSH_PROTOCOL_NAME,
   MULTICODEC_IDENTIFY_PROTOCOL_VERSION,
-  MULTICODEC_IDENTIFY_PUSH_PROTOCOL_VERSION
+  MULTICODEC_IDENTIFY_PUSH_PROTOCOL_VERSION,
+  MAX_INBOUND_STREAMS,
+  MAX_OUTBOUND_STREAMS,
+  MAX_IDENTIFY_MESSAGE_SIZE,
+  TIMEOUT,
+  RUN_ON_CONNECTION_OPEN,
+  PROTOCOL_PREFIX,
+  RUN_ON_TRANSIENT_CONNECTION,
+  MAX_PUSH_INCOMING_STREAMS,
+  MAX_PUSH_OUTGOING_STREAMS,
+  MAX_OBSERVED_ADDRESSES
 } from './consts.js'
 import { Identify } from './pb/message.js'
 import type { IdentifyService, IdentifyServiceComponents, IdentifyServiceInit } from './index.js'
@@ -31,24 +42,6 @@ import type { IncomingStreamData, Registrar } from '@libp2p/interface-internal/r
 
 const log = logger('libp2p:identify')
 
-// https://github.com/libp2p/go-libp2p/blob/8d2e54e1637041d5cf4fac1e531287560bd1f4ac/p2p/protocol/identify/id.go#L52
-const MAX_IDENTIFY_MESSAGE_SIZE = 1024 * 8
-
-const defaultValues = {
-  protocolPrefix: 'ipfs',
-  agentVersion: AGENT_VERSION,
-  // https://github.com/libp2p/go-libp2p/blob/8d2e54e1637041d5cf4fac1e531287560bd1f4ac/p2p/protocol/identify/id.go#L48
-  timeout: 60000,
-  maxInboundStreams: 1,
-  maxOutboundStreams: 1,
-  maxPushIncomingStreams: 1,
-  maxPushOutgoingStreams: 1,
-  maxObservedAddresses: 10,
-  maxIdentifyMessageSize: 8192,
-  runOnConnectionOpen: true,
-  runOnTransientConnection: true
-}
-
 export class DefaultIdentifyService implements Startable, IdentifyService {
   private readonly identifyProtocolStr: string
   private readonly identifyPushProtocolStr: string
@@ -72,8 +65,23 @@ export class DefaultIdentifyService implements Startable, IdentifyService {
   private readonly maxObservedAddresses: number
   private readonly events: EventEmitter<Libp2pEvents>
   private readonly runOnTransientConnection: boolean
+  private readonly runOnConnectionOpen: boolean
 
   constructor (components: IdentifyServiceComponents, init: IdentifyServiceInit) {
+    const validatedConfig = object({
+      protocolPrefix: string().default(PROTOCOL_PREFIX),
+      agentVersion: string().default(AGENT_VERSION),
+      timeout: number().integer().default(TIMEOUT),
+      maxIdentifyMessageSize: number().integer().min(0).default(MAX_IDENTIFY_MESSAGE_SIZE),
+      maxInboundStreams: number().integer().min(0).default(MAX_INBOUND_STREAMS),
+      maxPushIncomingStreams: number().integer().min(0).default(MAX_PUSH_INCOMING_STREAMS),
+      maxPushOutgoingStreams: number().integer().min(0).default(MAX_PUSH_OUTGOING_STREAMS),
+      maxOutboundStreams: number().integer().min(0).default(MAX_OUTBOUND_STREAMS),
+      maxObservedAddresses: number().integer().min(0).default(MAX_OBSERVED_ADDRESSES),
+      runOnConnectionOpen: boolean().default(RUN_ON_CONNECTION_OPEN),
+      runOnTransientConnection: boolean().default(RUN_ON_TRANSIENT_CONNECTION)
+    }).validateSync(init)
+
     this.started = false
     this.peerId = components.peerId
     this.peerStore = components.peerStore
@@ -82,24 +90,25 @@ export class DefaultIdentifyService implements Startable, IdentifyService {
     this.connectionManager = components.connectionManager
     this.events = components.events
 
-    this.identifyProtocolStr = `/${init.protocolPrefix ?? defaultValues.protocolPrefix}/${MULTICODEC_IDENTIFY_PROTOCOL_NAME}/${MULTICODEC_IDENTIFY_PROTOCOL_VERSION}`
-    this.identifyPushProtocolStr = `/${init.protocolPrefix ?? defaultValues.protocolPrefix}/${MULTICODEC_IDENTIFY_PUSH_PROTOCOL_NAME}/${MULTICODEC_IDENTIFY_PUSH_PROTOCOL_VERSION}`
-    this.timeout = init.timeout ?? defaultValues.timeout
-    this.maxInboundStreams = init.maxInboundStreams ?? defaultValues.maxInboundStreams
-    this.maxOutboundStreams = init.maxOutboundStreams ?? defaultValues.maxOutboundStreams
-    this.maxPushIncomingStreams = init.maxPushIncomingStreams ?? defaultValues.maxPushIncomingStreams
-    this.maxPushOutgoingStreams = init.maxPushOutgoingStreams ?? defaultValues.maxPushOutgoingStreams
-    this.maxIdentifyMessageSize = init.maxIdentifyMessageSize ?? defaultValues.maxIdentifyMessageSize
-    this.maxObservedAddresses = init.maxObservedAddresses ?? defaultValues.maxObservedAddresses
-    this.runOnTransientConnection = init.runOnTransientConnection ?? defaultValues.runOnTransientConnection
+    this.identifyProtocolStr = `/${validatedConfig.protocolPrefix}/${MULTICODEC_IDENTIFY_PROTOCOL_NAME}/${MULTICODEC_IDENTIFY_PROTOCOL_VERSION}`
+    this.identifyPushProtocolStr = `/${validatedConfig.protocolPrefix}/${MULTICODEC_IDENTIFY_PUSH_PROTOCOL_NAME}/${MULTICODEC_IDENTIFY_PUSH_PROTOCOL_VERSION}`
+    this.timeout = validatedConfig.timeout
+    this.maxInboundStreams = validatedConfig.maxInboundStreams
+    this.maxOutboundStreams = validatedConfig.maxOutboundStreams
+    this.maxPushIncomingStreams = validatedConfig.maxPushIncomingStreams
+    this.maxPushOutgoingStreams = validatedConfig.maxPushOutgoingStreams
+    this.maxIdentifyMessageSize = validatedConfig.maxIdentifyMessageSize
+    this.maxObservedAddresses = validatedConfig.maxObservedAddresses
+    this.runOnTransientConnection = validatedConfig.runOnTransientConnection
+    this.runOnConnectionOpen = validatedConfig.runOnConnectionOpen
 
     // Store self host metadata
     this.host = {
-      protocolVersion: `${init.protocolPrefix ?? defaultValues.protocolPrefix}/${IDENTIFY_PROTOCOL_VERSION}`,
-      agentVersion: init.agentVersion ?? defaultValues.agentVersion
+      protocolVersion: `${validatedConfig.protocolPrefix}/${IDENTIFY_PROTOCOL_VERSION}`,
+      agentVersion: validatedConfig.agentVersion
     }
 
-    if (init.runOnConnectionOpen ?? defaultValues.runOnConnectionOpen) {
+    if (this.runOnConnectionOpen) {
       // When a new connection happens, trigger identify
       components.events.addEventListener('connection:open', (evt) => {
         const connection = evt.detail
@@ -313,7 +322,7 @@ export class DefaultIdentifyService implements Startable, IdentifyService {
     log('our observed address is %a', cleanObservedAddr)
 
     if (cleanObservedAddr != null &&
-        this.addressManager.getObservedAddrs().length < (this.maxObservedAddresses ?? Infinity)) {
+        this.addressManager.getObservedAddrs().length < (this.maxObservedAddresses)) {
       log('storing our observed address %a', cleanObservedAddr)
       this.addressManager.addObservedAddr(cleanObservedAddr)
     }
diff --git a/packages/libp2p/src/identify/index.ts b/packages/libp2p/src/identify/index.ts
index a61309b3d3..cd8e6a7ab4 100644
--- a/packages/libp2p/src/identify/index.ts
+++ b/packages/libp2p/src/identify/index.ts
@@ -1,7 +1,4 @@
-import {
-  MULTICODEC_IDENTIFY,
-  MULTICODEC_IDENTIFY_PUSH
-} from './consts.js'
+import { MULTICODEC_IDENTIFY, MULTICODEC_IDENTIFY_PUSH } from './consts.js'
 import { DefaultIdentifyService } from './identify.js'
 import { Identify } from './pb/message.js'
 import type { AbortOptions, IdentifyResult, Libp2pEvents } from '@libp2p/interface'
diff --git a/packages/libp2p/src/libp2p.ts b/packages/libp2p/src/libp2p.ts
index 29c80f0cc7..d5c829b142 100644
--- a/packages/libp2p/src/libp2p.ts
+++ b/packages/libp2p/src/libp2p.ts
@@ -18,8 +18,8 @@ import { concat as uint8ArrayConcat } from 'uint8arrays/concat'
 import { fromString as uint8ArrayFromString } from 'uint8arrays/from-string'
 import { DefaultAddressManager } from './address-manager/index.js'
 import { defaultComponents } from './components.js'
+import { validateConfig } from './config/config.js'
 import { connectionGater } from './config/connection-gater.js'
-import { validateConfig } from './config.js'
 import { DefaultConnectionManager } from './connection-manager/index.js'
 import { CompoundContentRouting } from './content-routing/index.js'
 import { codes } from './errors.js'
diff --git a/packages/libp2p/src/ping/index.ts b/packages/libp2p/src/ping/index.ts
index 49c813b72e..74491dc267 100644
--- a/packages/libp2p/src/ping/index.ts
+++ b/packages/libp2p/src/ping/index.ts
@@ -4,6 +4,7 @@ import { logger } from '@libp2p/logger'
 import first from 'it-first'
 import { pipe } from 'it-pipe'
 import { equals as uint8ArrayEquals } from 'uint8arrays/equals'
+import { boolean, number, object, string } from 'yup'
 import { codes } from '../errors.js'
 import { PROTOCOL_PREFIX, PROTOCOL_NAME, PING_LENGTH, PROTOCOL_VERSION, TIMEOUT, MAX_INBOUND_STREAMS, MAX_OUTBOUND_STREAMS } from './constants.js'
 import type { AbortOptions } from '@libp2p/interface'
@@ -49,11 +50,20 @@ class DefaultPingService implements Startable, PingService {
   constructor (components: PingServiceComponents, init: PingServiceInit) {
     this.components = components
     this.started = false
-    this.protocol = `/${init.protocolPrefix ?? PROTOCOL_PREFIX}/${PROTOCOL_NAME}/${PROTOCOL_VERSION}`
-    this.timeout = init.timeout ?? TIMEOUT
-    this.maxInboundStreams = init.maxInboundStreams ?? MAX_INBOUND_STREAMS
-    this.maxOutboundStreams = init.maxOutboundStreams ?? MAX_OUTBOUND_STREAMS
-    this.runOnTransientConnection = init.runOnTransientConnection ?? true
+
+    const validatedConfig = object({
+      protocolPrefix: string().default(PROTOCOL_PREFIX),
+      timeout: number().integer().default(TIMEOUT),
+      maxInboundStreams: number().integer().min(0).default(MAX_INBOUND_STREAMS),
+      maxOutboundStreams: number().integer().min(0).default(MAX_OUTBOUND_STREAMS),
+      runOnTransientConnection: boolean().default(true)
+    }).validateSync(init)
+
+    this.protocol = `/${validatedConfig.protocolPrefix}/${PROTOCOL_NAME}/${PROTOCOL_VERSION}`
+    this.timeout = validatedConfig.timeout
+    this.maxInboundStreams = validatedConfig.maxInboundStreams
+    this.maxOutboundStreams = validatedConfig.maxOutboundStreams
+    this.runOnTransientConnection = validatedConfig.runOnTransientConnection
   }
 
   async start (): Promise<void> {
diff --git a/packages/libp2p/src/upnp-nat/index.ts b/packages/libp2p/src/upnp-nat/index.ts
index 8e422f6b1a..6969263b66 100644
--- a/packages/libp2p/src/upnp-nat/index.ts
+++ b/packages/libp2p/src/upnp-nat/index.ts
@@ -5,6 +5,7 @@ import { isLoopback } from '@libp2p/utils/multiaddr/is-loopback'
 import { fromNodeAddress } from '@multiformats/multiaddr'
 import isPrivateIp from 'private-ip'
 import { isBrowser } from 'wherearewe'
+import { boolean, number, object, string } from 'yup'
 import { codes } from '../errors.js'
 import * as pkg from '../version.js'
 import type { PeerId } from '@libp2p/interface/peer-id'
@@ -70,21 +71,32 @@ class UPnPNAT implements Startable {
   private readonly localAddress?: string
   private readonly description: string
   private readonly ttl: number
-  private readonly keepAlive: boolean
+  private readonly keepAlive?: boolean
   private readonly gateway?: string
   private started: boolean
   private client?: NatAPI
 
   constructor (components: UPnPNATComponents, init: UPnPNATInit) {
     this.components = components
-
     this.started = false
-    this.externalAddress = init.externalAddress
-    this.localAddress = init.localAddress
-    this.description = init.description ?? `${pkg.name}@${pkg.version} ${this.components.peerId.toString()}`
-    this.ttl = init.ttl ?? DEFAULT_TTL
-    this.keepAlive = init.keepAlive ?? true
-    this.gateway = init.gateway
+
+    const validIPRegex = /^(?:(?:^|\.)(?:\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])){4}$/
+
+    const validatedConfig = object({
+      externalAddress: string().matches(validIPRegex, 'Invalid IP address'),
+      localAddress: string().matches(validIPRegex, 'Invalid IP address'),
+      description: string().default(`${pkg.name}@${pkg.version} ${this.components.peerId.toString()}`),
+      ttl: number().integer().default(DEFAULT_TTL),
+      keepAlive: boolean().default(true),
+      gateway: string().optional()
+    }).validateSync(init)
+
+    this.externalAddress = validatedConfig.externalAddress
+    this.localAddress = validatedConfig.localAddress
+    this.description = validatedConfig.description
+    this.ttl = validatedConfig.ttl
+    this.keepAlive = validatedConfig.keepAlive
+    this.gateway = validatedConfig.gateway
 
     if (this.ttl < DEFAULT_TTL) {
       throw new CodeError(`NatManager ttl should be at least ${DEFAULT_TTL} seconds`, codes.ERR_INVALID_PARAMETERS)
diff --git a/packages/libp2p/test/circuit-relay/discovery.node.ts b/packages/libp2p/test/circuit-relay/discovery.node.ts
index 19517e67be..b6c434d6d7 100644
--- a/packages/libp2p/test/circuit-relay/discovery.node.ts
+++ b/packages/libp2p/test/circuit-relay/discovery.node.ts
@@ -5,6 +5,7 @@ import { tcp } from '@libp2p/tcp'
 import { expect } from 'aegir/chai'
 import { pEvent } from 'p-event'
 import { circuitRelayServer, type CircuitRelayService, circuitRelayTransport } from '../../src/circuit-relay/index.js'
+import { identifyService } from '../../src/identify/index.js'
 import { createLibp2p } from '../../src/index.js'
 import { plaintext } from '../../src/insecure/index.js'
 import { getRelayAddress, hasRelay, MockContentRouting, mockContentRouting } from './utils.js'
@@ -34,6 +35,7 @@ describe('circuit-relay discovery', () => {
         mockContentRouting()
       ],
       services: {
+        identify: identifyService(),
         relay: circuitRelayServer({
           advertise: {
             bootDelay: 10
diff --git a/packages/libp2p/test/configuration/protocol-prefix.node.ts b/packages/libp2p/test/configuration/protocol-prefix.node.ts
index db4ecea61c..93eb2af4f5 100644
--- a/packages/libp2p/test/configuration/protocol-prefix.node.ts
+++ b/packages/libp2p/test/configuration/protocol-prefix.node.ts
@@ -67,7 +67,8 @@ describe('Protocol prefix is configurable', () => {
       '/ipfs/id/1.0.0',
       '/ipfs/id/push/1.0.0',
       '/ipfs/ping/1.0.0',
-      '/libp2p/fetch/0.0.1'
+      '/libp2p/fetch/0.0.1',
+      '/libp2p/circuit/relay/0.2.0/stop'
     ])
   })
 })
diff --git a/packages/libp2p/test/connection-manager/index.node.ts b/packages/libp2p/test/connection-manager/index.node.ts
index add7158a47..9a45635f4d 100644
--- a/packages/libp2p/test/connection-manager/index.node.ts
+++ b/packages/libp2p/test/connection-manager/index.node.ts
@@ -235,7 +235,9 @@ describe('libp2p.connections', () => {
           },
           connectionManager: {
             minConnections,
-            maxConnections: 1
+            maxConnections: 1,
+            inboundConnectionThreshold: 1,
+            maxIncomingPendingConnections: 1
           }
         }
       })
diff --git a/packages/libp2p/test/connection-manager/index.spec.ts b/packages/libp2p/test/connection-manager/index.spec.ts
index 699339da03..4189969895 100644
--- a/packages/libp2p/test/connection-manager/index.spec.ts
+++ b/packages/libp2p/test/connection-manager/index.spec.ts
@@ -77,7 +77,9 @@ describe('Connection Manager', () => {
       config: createBaseOptions({
         connectionManager: {
           maxConnections: max,
-          minConnections: 2
+          minConnections: 2,
+          inboundConnectionThreshold: max,
+          maxIncomingPendingConnections: max
         }
       }),
       started: false
@@ -136,7 +138,9 @@ describe('Connection Manager', () => {
       config: createBaseOptions({
         connectionManager: {
           maxConnections: max,
-          minConnections: 2
+          minConnections: 2,
+          maxIncomingPendingConnections: max,
+          inboundConnectionThreshold: max
         }
       }),
       started: false
@@ -202,6 +206,8 @@ describe('Connection Manager', () => {
         connectionManager: {
           maxConnections: max,
           minConnections: 0,
+          maxIncomingPendingConnections: max,
+          inboundConnectionThreshold: max,
           allow: [
             '/ip4/83.13.55.32'
           ]
@@ -286,7 +292,9 @@ describe('Connection Manager', () => {
       config: createBaseOptions({
         connectionManager: {
           maxConnections: max,
-          minConnections: 0
+          minConnections: 0,
+          maxIncomingPendingConnections: max,
+          inboundConnectionThreshold: max
         }
       }),
       started: false
@@ -319,11 +327,13 @@ describe('Connection Manager', () => {
       config: createBaseOptions({
         connectionManager: {
           maxConnections: 5,
-          minConnections: 6
+          minConnections: 6,
+          maxIncomingPendingConnections: 5,
+          inboundConnectionThreshold: 5
         }
       }),
       started: false
-    })).to.eventually.rejected('maxConnections must be greater')
+    })).to.eventually.rejectedWith('minConnections must be less than the max connections limit: 5')
   })
 
   it('should reconnect to important peers on startup', async () => {
diff --git a/packages/libp2p/test/connection-manager/resolver.spec.ts b/packages/libp2p/test/connection-manager/resolver.spec.ts
index adccf3976d..ef8ed7f905 100644
--- a/packages/libp2p/test/connection-manager/resolver.spec.ts
+++ b/packages/libp2p/test/connection-manager/resolver.spec.ts
@@ -14,6 +14,7 @@ import sinon from 'sinon'
 import { RELAY_V2_HOP_CODEC } from '../../src/circuit-relay/constants.js'
 import { circuitRelayServer, type CircuitRelayService, circuitRelayTransport } from '../../src/circuit-relay/index.js'
 import { codes as ErrorCodes } from '../../src/errors.js'
+import { identifyService } from '../../src/identify/index.js'
 import { plaintext } from '../../src/insecure/index.js'
 import { createLibp2pNode, type Libp2pNode } from '../../src/libp2p.js'
 import type { PeerId } from '@libp2p/interface/peer-id'
@@ -93,7 +94,8 @@ describe('dialing (resolvable addresses)', () => {
           plaintext()
         ],
         services: {
-          relay: circuitRelayServer()
+          relay: circuitRelayServer(),
+          identify: identifyService()
         },
         connectionGater: mockConnectionGater()
       })
diff --git a/packages/libp2p/test/ping/ping.node.ts b/packages/libp2p/test/ping/ping.node.ts
index aba6537aa7..6c5e0f299e 100644
--- a/packages/libp2p/test/ping/ping.node.ts
+++ b/packages/libp2p/test/ping/ping.node.ts
@@ -4,6 +4,7 @@ import { multiaddr } from '@multiformats/multiaddr'
 import { expect } from 'aegir/chai'
 import { pipe } from 'it-pipe'
 import pDefer from 'p-defer'
+import { identifyService } from '../../src/identify/index.js'
 import { PROTOCOL } from '../../src/ping/constants.js'
 import { pingService, type PingService } from '../../src/ping/index.js'
 import { createBaseOptions } from '../fixtures/base-options.js'
@@ -18,6 +19,7 @@ describe('ping', () => {
       createNode({
         config: createBaseOptions({
           services: {
+            identify: identifyService(),
             ping: pingService()
           }
         })
@@ -25,6 +27,7 @@ describe('ping', () => {
       createNode({
         config: createBaseOptions({
           services: {
+            identify: identifyService(),
             ping: pingService()
           }
         })
@@ -32,6 +35,7 @@ describe('ping', () => {
       createNode({
         config: createBaseOptions({
           services: {
+            identify: identifyService(),
             ping: pingService()
           }
         })
@@ -106,6 +110,7 @@ describe('ping', () => {
     const client = await createNode({
       config: createBaseOptions({
         services: {
+          identify: identifyService(),
           ping: pingService({
             // Allow two outbound ping streams.
             // It is not allowed by the spec, but this test needs to open two concurrent streams.
diff --git a/packages/transport-webrtc/.aegir.js b/packages/transport-webrtc/.aegir.js
index 491576df87..dfbb5439dc 100644
--- a/packages/transport-webrtc/.aegir.js
+++ b/packages/transport-webrtc/.aegir.js
@@ -1,4 +1,3 @@
-
 /** @type {import('aegir').PartialOptions} */
 export default {
   build: {
@@ -32,7 +31,7 @@ export default {
         services: {
           relay: circuitRelayServer({
             reservations: {
-              maxReservations: Infinity
+              maxReservations: 10000
             }
           }),
           identify: identifyService()