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STUN: add support for Microsoft Multiplexed TURN channels (#2464)
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@IvanNardi
IvanNardi authored Jun 5, 2024
1 parent b6beeef commit 619005c
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Showing 4 changed files with 47 additions and 7 deletions.
42 changes: 41 additions & 1 deletion src/lib/protocols/stun.c
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Original file line number Diff line number Diff line change
Expand Up @@ -347,6 +347,14 @@ int is_stun(struct ndpi_detection_module_struct *ndpi_struct,
payload_length -=2;
}

/* Microsoft Multiplexed TURN messages */
if(payload_length >= STUN_HDR_LEN + 12 &&
ntohs(get_u_int16_t(payload, 0)) == 0xFF10 &&
ntohs(get_u_int16_t(payload, 2)) + 4 == payload_length) {
payload += 12;
payload_length -= 12;
}

msg_type = ntohs(*((u_int16_t *)&payload[0]));
msg_len = ntohs(*((u_int16_t *)&payload[2]));
magic_cookie = ntohl(*((u_int32_t *)&payload[4]));
Expand Down Expand Up @@ -823,7 +831,39 @@ static int stun_search_again(struct ndpi_detection_module_struct *ndpi_struct,
NDPI_LOG_DBG(ndpi_struct, "Unexpected\n");
}
} else {
NDPI_LOG_DBG(ndpi_struct, "QUIC range. Unexpected\n");
/* Microsoft Multiplexed TURN messages.
See: https://msopenspecs.azureedge.net/files/MS-TURN/%5bMS-TURN%5d.pdf 2.2.3 */
if(packet->payload_packet_len >= 12 &&
ntohs(get_u_int16_t(packet->payload, 0)) == 0xFF10 &&
flow->detected_protocol_stack[0] == NDPI_PROTOCOL_SKYPE_TEAMS_CALL) {
u_int16_t ch_len;

ch_len = ntohs(get_u_int16_t(packet->payload, 2));

if(ch_len == packet->payload_packet_len - 4 &&
ch_len >= 8) {
const u_int8_t *orig_payload;
u_int16_t orig_payload_length;

orig_payload = packet->payload;
orig_payload_length = packet->payload_packet_len;
packet->payload = packet->payload + 12;
packet->payload_packet_len = ch_len - 8;

stun_search_again(ndpi_struct, flow);

NDPI_LOG_DBG(ndpi_struct, "End recursion on MS channel\n");

packet->payload = orig_payload;
packet->payload_packet_len = orig_payload_length;

} else {
NDPI_LOG_ERR(ndpi_struct, "Invalid MS channel length %d %d\n",
ch_len, packet->payload_packet_len - 4);
}
} else {
NDPI_LOG_DBG(ndpi_struct, "QUIC other range. Unexpected\n");
}
}
return keep_extra_dissection(ndpi_struct, flow);
}
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4 changes: 2 additions & 2 deletions tests/cfgs/caches_cfg/result/teams.pcap.out
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Original file line number Diff line number Diff line change
Expand Up @@ -115,8 +115,8 @@ JA3 Host Stats:
59 UDP 192.168.1.6:57504 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/92 bytes <-> 1 pkts/222 bytes][Goodput ratio: 54/81][0.04 sec][Hostname/SNI: chatsvcagg.svcs.teams.office.com][52.114.88.59][PLAIN TEXT (chatsvcagg)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
60 UDP 192.168.1.6:58457 <-> 192.168.1.1:53 [proto: 5.219/DNS.Microsoft365][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/78 bytes <-> 1 pkts/236 bytes][Goodput ratio: 46/82][0.01 sec][Hostname/SNI: outlook.office.com][13.107.18.11][PLAIN TEXT (outlook)][Plen Bins: 0,50,0,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
61 UDP 192.168.1.6:50653 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/95 bytes <-> 1 pkts/216 bytes][Goodput ratio: 55/80][0.03 sec][Hostname/SNI: api.flightproxy.teams.microsoft.com][52.114.77.136][PLAIN TEXT (flightproxy)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
62 UDP 52.114.252.8:3479 <-> 192.168.1.6:50016 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Audio][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
63 UDP 52.114.252.21:3480 <-> 192.168.1.6:50036 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Video][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
62 UDP 52.114.252.8:3479 <-> 192.168.1.6:50016 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Audio][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Mapped IP/Port: 52.114.252.8:3479][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
63 UDP 52.114.252.21:3480 <-> 192.168.1.6:50036 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Video][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Mapped IP/Port: 52.114.252.21:3480][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
64 UDP 192.168.1.6:64046 <-> 192.168.1.1:53 [proto: 5.26/DNS.ntop][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 3][cat: Network/14][2 pkts/166 bytes <-> 1 pkts/136 bytes][Goodput ratio: 49/69][1.01 sec][Hostname/SNI: b._dns-sd._udp.ntop.org][::][Risk: ** Error Code **][Risk Score: 10][Risk Info: DNS Error Code NXDOMAIN][PLAIN TEXT (postmaster)][Plen Bins: 0,66,33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
65 UDP 192.168.1.6:63106 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/95 bytes <-> 1 pkts/203 bytes][Goodput ratio: 55/79][0.03 sec][Hostname/SNI: eu-prod.asyncgw.teams.microsoft.com][52.114.75.70][PLAIN TEXT (microsoft)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
66 UDP 192.168.1.6:61245 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/87 bytes <-> 1 pkts/209 bytes][Goodput ratio: 51/80][0.05 sec][Hostname/SNI: euaz.tr.teams.microsoft.com][52.114.250.123][Risk: ** Minor Issues **][Risk Score: 10][Risk Info: DNS Record with zero TTL][PLAIN TEXT (microsoft)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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4 changes: 2 additions & 2 deletions tests/cfgs/caches_global/result/teams.pcap.out
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Original file line number Diff line number Diff line change
Expand Up @@ -115,8 +115,8 @@ JA3 Host Stats:
59 UDP 192.168.1.6:57504 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/92 bytes <-> 1 pkts/222 bytes][Goodput ratio: 54/81][0.04 sec][Hostname/SNI: chatsvcagg.svcs.teams.office.com][52.114.88.59][PLAIN TEXT (chatsvcagg)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
60 UDP 192.168.1.6:58457 <-> 192.168.1.1:53 [proto: 5.219/DNS.Microsoft365][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/78 bytes <-> 1 pkts/236 bytes][Goodput ratio: 46/82][0.01 sec][Hostname/SNI: outlook.office.com][13.107.18.11][PLAIN TEXT (outlook)][Plen Bins: 0,50,0,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
61 UDP 192.168.1.6:50653 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/95 bytes <-> 1 pkts/216 bytes][Goodput ratio: 55/80][0.03 sec][Hostname/SNI: api.flightproxy.teams.microsoft.com][52.114.77.136][PLAIN TEXT (flightproxy)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
62 UDP 52.114.252.8:3479 <-> 192.168.1.6:50016 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Audio][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
63 UDP 52.114.252.21:3480 <-> 192.168.1.6:50036 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Video][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
62 UDP 52.114.252.8:3479 <-> 192.168.1.6:50016 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Audio][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Mapped IP/Port: 52.114.252.8:3479][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
63 UDP 52.114.252.21:3480 <-> 192.168.1.6:50036 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Video][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Mapped IP/Port: 52.114.252.21:3480][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
64 UDP 192.168.1.6:64046 <-> 192.168.1.1:53 [proto: 5.26/DNS.ntop][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 3][cat: Network/14][2 pkts/166 bytes <-> 1 pkts/136 bytes][Goodput ratio: 49/69][1.01 sec][Hostname/SNI: b._dns-sd._udp.ntop.org][::][Risk: ** Error Code **][Risk Score: 10][Risk Info: DNS Error Code NXDOMAIN][PLAIN TEXT (postmaster)][Plen Bins: 0,66,33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
65 UDP 192.168.1.6:63106 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/95 bytes <-> 1 pkts/203 bytes][Goodput ratio: 55/79][0.03 sec][Hostname/SNI: eu-prod.asyncgw.teams.microsoft.com][52.114.75.70][PLAIN TEXT (microsoft)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
66 UDP 192.168.1.6:61245 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/87 bytes <-> 1 pkts/209 bytes][Goodput ratio: 51/80][0.05 sec][Hostname/SNI: euaz.tr.teams.microsoft.com][52.114.250.123][Risk: ** Minor Issues **][Risk Score: 10][Risk Info: DNS Record with zero TTL][PLAIN TEXT (microsoft)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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4 changes: 2 additions & 2 deletions tests/cfgs/default/result/teams.pcap.out
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Original file line number Diff line number Diff line change
Expand Up @@ -115,8 +115,8 @@ JA3 Host Stats:
59 UDP 192.168.1.6:57504 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/92 bytes <-> 1 pkts/222 bytes][Goodput ratio: 54/81][0.04 sec][Hostname/SNI: chatsvcagg.svcs.teams.office.com][52.114.88.59][PLAIN TEXT (chatsvcagg)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
60 UDP 192.168.1.6:58457 <-> 192.168.1.1:53 [proto: 5.219/DNS.Microsoft365][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/78 bytes <-> 1 pkts/236 bytes][Goodput ratio: 46/82][0.01 sec][Hostname/SNI: outlook.office.com][13.107.18.11][PLAIN TEXT (outlook)][Plen Bins: 0,50,0,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
61 UDP 192.168.1.6:50653 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/95 bytes <-> 1 pkts/216 bytes][Goodput ratio: 55/80][0.03 sec][Hostname/SNI: api.flightproxy.teams.microsoft.com][52.114.77.136][PLAIN TEXT (flightproxy)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
62 UDP 52.114.252.8:3479 <-> 192.168.1.6:50016 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Audio][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
63 UDP 52.114.252.21:3480 <-> 192.168.1.6:50036 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Video][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
62 UDP 52.114.252.8:3479 <-> 192.168.1.6:50016 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Audio][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Mapped IP/Port: 52.114.252.8:3479][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
63 UDP 52.114.252.21:3480 <-> 192.168.1.6:50036 [proto: 78.38/STUN.Skype_TeamsCall][IP: 276/Azure][Stream Content: Video][ClearText][Confidence: DPI][DPI packets: 2][cat: VoIP/10][1 pkts/166 bytes <-> 1 pkts/142 bytes][Goodput ratio: 74/70][0.01 sec][Mapped IP/Port: 52.114.252.21:3480][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
64 UDP 192.168.1.6:64046 <-> 192.168.1.1:53 [proto: 5.26/DNS.ntop][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 3][cat: Network/14][2 pkts/166 bytes <-> 1 pkts/136 bytes][Goodput ratio: 49/69][1.01 sec][Hostname/SNI: b._dns-sd._udp.ntop.org][::][Risk: ** Error Code **][Risk Score: 10][Risk Info: DNS Error Code NXDOMAIN][PLAIN TEXT (postmaster)][Plen Bins: 0,66,33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
65 UDP 192.168.1.6:63106 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/95 bytes <-> 1 pkts/203 bytes][Goodput ratio: 55/79][0.03 sec][Hostname/SNI: eu-prod.asyncgw.teams.microsoft.com][52.114.75.70][PLAIN TEXT (microsoft)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
66 UDP 192.168.1.6:61245 <-> 192.168.1.1:53 [proto: 5.250/DNS.Teams][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/87 bytes <-> 1 pkts/209 bytes][Goodput ratio: 51/80][0.05 sec][Hostname/SNI: euaz.tr.teams.microsoft.com][52.114.250.123][Risk: ** Minor Issues **][Risk Score: 10][Risk Info: DNS Record with zero TTL][PLAIN TEXT (microsoft)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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