Table of contents Introduction Networking and Topology Networking Topology Types of Topologies Firewall Firewall Types of Firewall Stateful vs Stateless Firewalls Content Filtering Signature Identification IDS/IPS MAC Address MAC Address OSI Model OSI Model Layers of OSI Model IP Address IP Address Subnet Mask IP Classes and Ranges Subnetting Subnetting IP Addressing Methods IP Addressing Methods TCP/IP Protocol Suites TCP/IP Protocol Suites Ports Ports Networking Services Networking Services Routing Protocols Routing Protocols WAN Technologies WAN Technologies Internet Access Technologies Internet Access Technologies Network Types Network Types Remote Access Protocols and Services Remote Access Protocols and Services VPN (Virtual Private Network) Types of VPN connections Authentication Protocols Authentication Protocols Cloud and Virtualization Cloud and Virtualization Cloud Computing Cloud Computing Type of Cloud Computing VLAN, Intranet and Extranet VLAN, Intranet and Extranet Optimization and Fault Tolerance Optimization and Fault Tolerance Backup Services Disaster Recovery Security Protocols Security Protocols Types of Protection SOHO Routers SOHO Routers Network Utilities Network Utilities Networking Issues Networking Issues Troubleshooting Strategy Troubleshooting Strategy