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RTP, STUN: improve detection of multimedia flow type
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Let's see if we are able to tell audio from video calls only looking at
RTP Payload Type field...
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@IvanNardi
IvanNardi committed Nov 18, 2024
1 parent c228502 commit e753b06
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Showing 19 changed files with 230 additions and 42 deletions.
2 changes: 1 addition & 1 deletion src/include/ndpi_private.h
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Original file line number Diff line number Diff line change
Expand Up @@ -691,7 +691,7 @@ const uint8_t *get_crypto_data(struct ndpi_detection_module_struct *ndpi_struct,
int is_valid_rtp_payload_type(uint8_t type);
int is_rtp_or_rtcp(struct ndpi_detection_module_struct *ndpi_struct,
const u_int8_t *payload, u_int16_t payload_len, u_int16_t *seq);
u_int8_t rtp_get_stream_type(u_int8_t payloadType, ndpi_multimedia_flow_type *s_type);
u_int8_t rtp_get_stream_type(u_int8_t payloadType, ndpi_multimedia_flow_type *s_type, u_int16_t sub_proto);

/* Bittorrent */
u_int64_t make_bittorrent_host_key(struct ndpi_flow_struct *flow, int client, int offset);
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153 changes: 129 additions & 24 deletions src/lib/protocols/rtp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -40,43 +40,148 @@ int is_valid_rtp_payload_type(uint8_t type)
return 1;
}

u_int8_t rtp_get_stream_type(u_int8_t payloadType, ndpi_multimedia_flow_type *s_type)
u_int8_t rtp_get_stream_type(u_int8_t payloadType, ndpi_multimedia_flow_type *s_type, u_int16_t sub_proto)
{
/* General, from IANA */
switch(payloadType) {
case 0: /* G.711 u-Law */
case 3: /* GSM 6.10 */
case 4: /* G.723.1 */
case 5: /* DVI4 */
case 6: /* DVI4 */
case 7: /* LPC */
case 8: /* G.711 A-Law */
case 9: /* G.722 */
case 10: /* L16 */
case 11: /* L16 */
case 12: /* QCELP */
case 13: /* Comfort Noise */
case 96: /* Dynamic RTP */
case 97: /* Redundant Audio Data Payload */
case 98: /* DynamicRTP-Type-98 (Zoom) */
case 101: /* DTMF */
case 103: /* SILK Narrowband */
case 104: /* SILK Wideband */
case 111: /* Siren */
case 112: /* G.722.1 */
case 114: /* RT Audio Wideband */
case 115: /* RT Audio Narrowband */
case 116: /* G.726 */
case 117: /* G.722 */
case 118: /* Comfort Noise Wideband */
case 14: /* MPA */
case 15: /* G728 */
case 16: /* DVI4 */
case 17: /* DVI4 */
case 18: /* G729 */
*s_type = ndpi_multimedia_audio_flow;
return(1);

case 34: /* H.263 [MS-H26XPF] */
case 121: /* RT Video */
case 122: /* H.264 [MS-H264PF] */
case 123: /* H.264 FEC [MS-H264PF] */
case 127: /* x-data */

case 25: /* CelB */
case 26: /* JPEG */
case 28: /* nv */
case 31: /* H261 */
case 32: /* MPV */
case 34: /* H263 */
*s_type = ndpi_multimedia_video_flow;
return(1);
}

/* Microsoft; from https://learn.microsoft.com/en-us/openspecs/office_protocols/ms-rtp/3b8dc3c6-34b8-4827-9b38-3b00154f471c */
if(sub_proto == NDPI_PROTOCOL_SKYPE_TEAMS_CALL) {
switch(payloadType) {
case 103: /* SILK Narrowband */
case 104: /* SILK Wideband */
case 106: /* OPUS */
case 111: /* Siren */
case 112: /* G.722.1 */
case 114: /* RT Audio Wideband */
case 115: /* RT Audio Narrowband */
case 116: /* G.726 */
case 117: /* G.722 */
case 118: /* Comfort Noise Wideband */
*s_type = ndpi_multimedia_audio_flow;
return(1);

case 34: /* H.263 [MS-H26XPF] */
case 121: /* RT Video */
case 122: /* H.264 [MS-H264PF] */
case 123: /* H.264 FEC [MS-H264PF] */
*s_type = ndpi_multimedia_video_flow;
return(1);

default:
*s_type = ndpi_multimedia_unknown_flow;
return(0);
}
}

/* Dynamic PTs are... dynamic... :D
* Looking at some traces, it seems specific applications keep using
* always the same PT for audio/video...
* TODO: something better?
* Bottom line: checking only PT is very fast/easy, but we might have
* false positives/negatives
*/

if(sub_proto == NDPI_PROTOCOL_GOOGLE_CALL) {
switch(payloadType) {
case 111:
*s_type = ndpi_multimedia_audio_flow;
return(1);

case 96:
case 100:
*s_type = ndpi_multimedia_video_flow;
return(1);

default:
*s_type = ndpi_multimedia_unknown_flow;
return(0);
}
}

default:
*s_type = ndpi_multimedia_unknown_flow;
return(0);
if(sub_proto == NDPI_PROTOCOL_WHATSAPP_CALL) {
switch(payloadType) {
case 120:
*s_type = ndpi_multimedia_audio_flow;
return(1);

case 97:
case 102:
*s_type = ndpi_multimedia_video_flow;
return(1);

default:
*s_type = ndpi_multimedia_unknown_flow;
return(0);
}
}

if(sub_proto == NDPI_PROTOCOL_FACEBOOK_VOIP) {
switch(payloadType) {
case 96:
case 97:
case 101:
case 109:
*s_type = ndpi_multimedia_audio_flow;
return(1);

case 127:
*s_type = ndpi_multimedia_video_flow;
return(1);

default:
*s_type = ndpi_multimedia_unknown_flow;
return(0);
}
}

if(sub_proto == NDPI_PROTOCOL_TELEGRAM_VOIP) {
switch(payloadType) {
case 111:
*s_type = ndpi_multimedia_audio_flow;
return(1);

case 106:
*s_type = ndpi_multimedia_video_flow;
return(1);

default:
*s_type = ndpi_multimedia_unknown_flow;
return(0);
}
}

*s_type = ndpi_multimedia_unknown_flow;
return(0);
}

static int is_valid_rtcp_payload_type(uint8_t type) {
Expand Down Expand Up @@ -203,7 +308,7 @@ static void ndpi_rtp_search(struct ndpi_detection_module_struct *ndpi_struct,
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
NDPI_EXCLUDE_PROTO_EXT(ndpi_struct, flow, NDPI_PROTOCOL_RTCP);
} else {
rtp_get_stream_type(payload[1] & 0x7F, &flow->flow_multimedia_type);
rtp_get_stream_type(payload[1] & 0x7F, &flow->flow_multimedia_type, NDPI_PROTOCOL_UNKNOWN);

NDPI_LOG_INFO(ndpi_struct, "Found RTP\n");
ndpi_int_rtp_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_RTP);
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2 changes: 1 addition & 1 deletion src/lib/protocols/stun.c
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Original file line number Diff line number Diff line change
Expand Up @@ -877,7 +877,7 @@ static int stun_search_again(struct ndpi_detection_module_struct *ndpi_struct,
NDPI_LOG_DBG(ndpi_struct, "RTP (dir %d)\n", packet->packet_direction);
NDPI_LOG_INFO(ndpi_struct, "Found RTP over STUN\n");

rtp_get_stream_type(packet->payload[1] & 0x7F, &flow->flow_multimedia_type);
rtp_get_stream_type(packet->payload[1] & 0x7F, &flow->flow_multimedia_type, flow->detected_protocol_stack[0]);

if(flow->detected_protocol_stack[0] != NDPI_PROTOCOL_RTP &&
flow->detected_protocol_stack[0] != NDPI_PROTOCOL_RTCP &&
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Binary file added tests/cfgs/default/pcap/telegram_voice.pcapng
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2 changes: 1 addition & 1 deletion tests/cfgs/default/result/false_positives.pcapng.out
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Expand Up @@ -32,7 +32,7 @@ Unrated 6 460 1
1 UDP 10.192.92.81:52070 <-> 10.136.43.69:21048 [VLAN: 20][proto: 87/RTP][IP: 0/Unknown][Stream Content: Audio][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 3][cat: Media/1][15 pkts/3330 bytes <-> 15 pkts/3330 bytes][Goodput ratio: 77/77][0.30 sec][bytes ratio: 0.000 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 19/19 19/19 20/20 0/0][Pkt Len c2s/s2c min/avg/max/stddev: 222/222 222/222 222/222 0/0][PLAIN TEXT (UUUUUUUUUUUUU)][Plen Bins: 0,0,0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
2 UDP 10.126.70.67:23784 <-> 10.236.7.225:50160 [VLAN: 107][proto: 87/RTP][IP: 0/Unknown][Stream Content: Audio][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 3][cat: Media/1][18 pkts/3924 bytes <-> 12 pkts/2616 bytes][Goodput ratio: 79/79][0.34 sec][bytes ratio: 0.200 (Upload)][IAT c2s/s2c min/avg/max/stddev: 19/19 20/20 20/20 0/0][Pkt Len c2s/s2c min/avg/max/stddev: 218/218 218/218 218/218 0/0][PLAIN TEXT (UUUUUUUUU)][Plen Bins: 0,0,0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
3 UDP 10.102.45.249:31046 <-> 10.133.48.100:21176 [VLAN: 10][proto: GTP:87/RTP][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 3][cat: Media/1][22 pkts/2860 bytes <-> 8 pkts/989 bytes][Goodput ratio: 34/30][0.44 sec][bytes ratio: 0.486 (Upload)][IAT c2s/s2c min/avg/max/stddev: 0/19 22/19 44/20 15/0][Pkt Len c2s/s2c min/avg/max/stddev: 130/113 130/124 130/130 0/8][Plen Bins: 10,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
4 UDP 10.133.32.101:36408 -> 10.110.31.25:1272 [VLAN: 10][proto: GTP:87/RTP][IP: 0/Unknown][Stream Content: Audio][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 3][cat: Media/1][20 pkts/2260 bytes -> 0 pkts/0 bytes][Goodput ratio: 24/0][0.38 sec][bytes ratio: 1.000 (Upload)][IAT c2s/s2c min/avg/max/stddev: 19/0 20/0 21/0 1/0][Pkt Len c2s/s2c min/avg/max/stddev: 113/0 113/0 113/0 0/0][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
4 UDP 10.133.32.101:36408 -> 10.110.31.25:1272 [VLAN: 10][proto: GTP:87/RTP][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 3][cat: Media/1][20 pkts/2260 bytes -> 0 pkts/0 bytes][Goodput ratio: 24/0][0.38 sec][bytes ratio: 1.000 (Upload)][IAT c2s/s2c min/avg/max/stddev: 19/0 20/0 21/0 1/0][Pkt Len c2s/s2c min/avg/max/stddev: 113/0 113/0 113/0 0/0][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
5 TCP 10.140.231.26:61202 <-> 159.65.12.169:443 [VLAN: 113][proto: GTP:7/HTTP][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 4][cat: Web/5][2 pkts/557 bytes <-> 2 pkts/416 bytes][Goodput ratio: 58/45][0.20 sec][Hostname/SNI: wludo.superkinglabs.com][URL: wludo.superkinglabs.com:443/ws][StatusCode: 101][Server: nginx/1.12.2][Risk: ** Known Proto on Non Std Port **** HTTP Susp User-Agent **** HTTP Obsolete Server **][Risk Score: 200][Risk Info: Empty or missing User-Agent / Expected on port 80 / Obsolete nginx server 1.12.2][TCP Fingerprint: 2_64_65535_15db81ff8b0d/Unknown][PLAIN TEXT (GET /ws HTTP/1.1)][Plen Bins: 0,0,0,0,0,50,0,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]


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2 changes: 1 addition & 1 deletion tests/cfgs/default/result/rtp.pcapng.out
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Expand Up @@ -30,4 +30,4 @@ Fun 30 16092 1
1 TCP 172.16.168.24:40252 <-> 172.16.168.64:5000 [proto: 87/RTP][IP: 0/Unknown][Stream Content: Audio][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 8][cat: Media/1][19 pkts/21900 bytes <-> 18 pkts/1196 bytes][Goodput ratio: 94/0][85.30 sec][bytes ratio: 0.896 (Upload)][IAT c2s/s2c min/avg/max/stddev: 93/93 5654/6060 82923/82923 20651/21318][Pkt Len c2s/s2c min/avg/max/stddev: 66/66 1153/66 1280/74 371/2][TCP Fingerprint: 2_64_5840_1596d0698b3d/Unknown][PLAIN TEXT (QQSPSSV)][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,100,0,0,0,0,0,0,0,0,0,0]
2 UDP 10.204.220.71:6000 -> 10.204.220.171:6000 [proto: 87/RTP][IP: 0/Unknown][Stream Content: Video][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 3][cat: Media/1][15 pkts/18438 bytes -> 0 pkts/0 bytes][Goodput ratio: 97/0][0.34 sec][bytes ratio: 1.000 (Upload)][IAT c2s/s2c min/avg/max/stddev: 1/0 25/0 77/0 31/0][Pkt Len c2s/s2c min/avg/max/stddev: 66/0 1229/0 1486/0 467/0][Plen Bins: 6,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,0,0,6,0,0,0,0,0,0,0,0,0,6,0,0,0,68,0,0]
3 UDP 150.219.118.19:54234 <-> 192.113.193.227:50003 [proto: 58/Discord][IP: 0/Unknown][Encrypted][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 2][cat: Collaborative/15][11 pkts/1455 bytes <-> 19 pkts/14637 bytes][Goodput ratio: 68/95][0.14 sec][Client IP: 85.154.2.145][bytes ratio: -0.819 (Download)][IAT c2s/s2c min/avg/max/stddev: 0/0 13/6 36/29 11/11][Pkt Len c2s/s2c min/avg/max/stddev: 85/116 132/770 207/1146 54/475][PLAIN TEXT (85.154.2.145)][Plen Bins: 0,20,6,20,3,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,26,13,0,0,0,0,0,0,0,0,0,0,0,0,0]
4 UDP 10.140.67.167:55402 -> 148.153.85.97:6008 [VLAN: 1508][proto: 87/RTP][IP: 0/Unknown][Stream Content: Audio][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 4][cat: Media/1][30 pkts/2181 bytes -> 0 pkts/0 bytes][Goodput ratio: 37/0][0.82 sec][bytes ratio: 1.000 (Upload)][IAT c2s/s2c min/avg/max/stddev: 0/0 29/0 118/0 35/0][Pkt Len c2s/s2c min/avg/max/stddev: 62/0 73/0 106/0 12/0][Plen Bins: 80,20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
4 UDP 10.140.67.167:55402 -> 148.153.85.97:6008 [VLAN: 1508][proto: 87/RTP][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 4][cat: Media/1][30 pkts/2181 bytes -> 0 pkts/0 bytes][Goodput ratio: 37/0][0.82 sec][bytes ratio: 1.000 (Upload)][IAT c2s/s2c min/avg/max/stddev: 0/0 29/0 118/0 35/0][Pkt Len c2s/s2c min/avg/max/stddev: 62/0 73/0 106/0 12/0][Plen Bins: 80,20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
2 changes: 1 addition & 1 deletion tests/cfgs/default/result/stun_classic.pcap.out
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Expand Up @@ -24,4 +24,4 @@ RTP 22 1624 1

Acceptable 22 1624 1

1 UDP 172.16.63.224:55050 <-> 172.16.63.21:13958 [proto: 78.87/STUN.RTP][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 78/STUN, Confidence: DPI][DPI packets: 7][cat: Media/1][9 pkts/662 bytes <-> 13 pkts/962 bytes][Goodput ratio: 43/43][0.23 sec][bytes ratio: -0.185 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 4/0 32/17 101/42 32/11][Pkt Len c2s/s2c min/avg/max/stddev: 70/74 74/74 74/74 1/0][Mapped IP/Port: 172.16.63.224:55050][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 4,95,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
1 UDP 172.16.63.224:55050 <-> 172.16.63.21:13958 [proto: 78.87/STUN.RTP][IP: 0/Unknown][Stream Content: Audio][ClearText][Confidence: DPI][FPC: 78/STUN, Confidence: DPI][DPI packets: 7][cat: Media/1][9 pkts/662 bytes <-> 13 pkts/962 bytes][Goodput ratio: 43/43][0.23 sec][bytes ratio: -0.185 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 4/0 32/17 101/42 32/11][Pkt Len c2s/s2c min/avg/max/stddev: 70/74 74/74 74/74 1/0][Mapped IP/Port: 172.16.63.224:55050][Risk: ** Known Proto on Non Std Port **][Risk Score: 50][Plen Bins: 4,95,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
2 changes: 1 addition & 1 deletion tests/cfgs/default/result/stun_google_meet.pcapng.out
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Expand Up @@ -31,7 +31,7 @@ JA3 Host Stats:
2 192.168.12.156 1


1 UDP [2001:b07:a3d:c112:48a1:1094:1227:281e]:45572 <-> [2001:4860:4864:6::81]:19305 [proto: 30.404/DTLS.GoogleCall][IP: 126/Google][Stream Content: Audio][Encrypted][Confidence: DPI][FPC: 78.404/STUN.GoogleCall, Confidence: DPI][DPI packets: 17][cat: VoIP/10][30 pkts/4693 bytes <-> 118 pkts/36197 bytes][Goodput ratio: 60/80][0.71 sec][bytes ratio: -0.770 (Download)][IAT c2s/s2c min/avg/max/stddev: 0/0 22/2 152/74 32/9][Pkt Len c2s/s2c min/avg/max/stddev: 106/99 156/307 608/1265 88/113][Mapped IP/Port: [2001:b07:a3d:c112:48a1:1094:1227:281e]:45572][DTLSv1.2][JA3C: c14667d7da3e6f7a7ab5519ef78c2452][JA4: dd2d110700_c45550529adf_d9dd6182da81][JA3S: 1f5d6a6d0bc5d514dd84d13e6283d309][Issuer: CN=hangouts][Subject: CN=hangouts][Certificate SHA-1: 07:CC:FC:28:04:F2:29:8F:E9:C4:BF:AC:F6:D2:BD:F2:BA:36:AD:31][Validity: 2023-10-11 02:02:47 - 2024-10-11 02:02:47][Cipher: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256][PLAIN TEXT (igoKAAiKAiADEA)][Plen Bins: 0,6,16,5,2,0,0,0,68,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
1 UDP [2001:b07:a3d:c112:48a1:1094:1227:281e]:45572 <-> [2001:4860:4864:6::81]:19305 [proto: 30.404/DTLS.GoogleCall][IP: 126/Google][Encrypted][Confidence: DPI][FPC: 78.404/STUN.GoogleCall, Confidence: DPI][DPI packets: 17][cat: VoIP/10][30 pkts/4693 bytes <-> 118 pkts/36197 bytes][Goodput ratio: 60/80][0.71 sec][bytes ratio: -0.770 (Download)][IAT c2s/s2c min/avg/max/stddev: 0/0 22/2 152/74 32/9][Pkt Len c2s/s2c min/avg/max/stddev: 106/99 156/307 608/1265 88/113][Mapped IP/Port: [2001:b07:a3d:c112:48a1:1094:1227:281e]:45572][DTLSv1.2][JA3C: c14667d7da3e6f7a7ab5519ef78c2452][JA4: dd2d110700_c45550529adf_d9dd6182da81][JA3S: 1f5d6a6d0bc5d514dd84d13e6283d309][Issuer: CN=hangouts][Subject: CN=hangouts][Certificate SHA-1: 07:CC:FC:28:04:F2:29:8F:E9:C4:BF:AC:F6:D2:BD:F2:BA:36:AD:31][Validity: 2023-10-11 02:02:47 - 2024-10-11 02:02:47][Cipher: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256][PLAIN TEXT (igoKAAiKAiADEA)][Plen Bins: 0,6,16,5,2,0,0,0,68,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
2 UDP 192.168.12.156:38152 <-> 142.250.82.76:19305 [proto: 30.404/DTLS.GoogleCall][IP: 126/Google][Encrypted][Confidence: DPI][FPC: 78.404/STUN.GoogleCall, Confidence: DPI][DPI packets: 17][cat: VoIP/10][28 pkts/4034 bytes <-> 46 pkts/12188 bytes][Goodput ratio: 71/84][0.87 sec][bytes ratio: -0.503 (Download)][IAT c2s/s2c min/avg/max/stddev: 0/0 30/10 205/154 50/29][Pkt Len c2s/s2c min/avg/max/stddev: 87/79 144/265 587/1245 89/180][Mapped IP/Port: 93.35.171.209:39032][DTLSv1.2][JA3C: c14667d7da3e6f7a7ab5519ef78c2452][JA4: dd2d110700_c45550529adf_d9dd6182da81][JA3S: 1f5d6a6d0bc5d514dd84d13e6283d309][Issuer: CN=hangouts][Subject: CN=hangouts][Certificate SHA-1: 49:1A:C7:70:3E:79:F9:C5:3D:0F:46:33:B7:A4:EC:54:B0:93:C9:61][Validity: 2023-06-19 17:32:20 - 2024-06-19 17:32:20][Cipher: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256][PLAIN TEXT (HrRgpad)][Plen Bins: 0,8,37,9,4,0,0,0,38,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0]
3 UDP 192.168.12.156:38152 <-> 142.250.82.76:3478 [proto: 30.404/DTLS.GoogleCall][IP: 126/Google][Stream Content: Audio][Encrypted][Confidence: DPI][FPC: 78.404/STUN.GoogleCall, Confidence: DPI][DPI packets: 17][cat: VoIP/10][55 pkts/7402 bytes <-> 24 pkts/3525 bytes][Goodput ratio: 69/71][6.63 sec][bytes ratio: 0.355 (Upload)][IAT c2s/s2c min/avg/max/stddev: 0/2 109/184 402/761 143/224][Pkt Len c2s/s2c min/avg/max/stddev: 87/82 135/147 423/579 69/115][Mapped IP/Port: 93.35.171.209:39032][PLAIN TEXT (HrRgpad)][Plen Bins: 0,39,34,15,0,1,0,0,5,1,1,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
4 UDP 192.168.12.156:45400 <-> 142.250.82.76:3478 [proto: 78.404/STUN.GoogleCall][IP: 126/Google][ClearText][Confidence: DPI][FPC: 78.404/STUN.GoogleCall, Confidence: DPI][DPI packets: 7][cat: VoIP/10][17 pkts/2694 bytes <-> 16 pkts/1696 bytes][Goodput ratio: 73/60][54.70 sec][bytes ratio: 0.227 (Upload)][IAT c2s/s2c min/avg/max/stddev: 90/78 3250/2028 17905/6554 4698/2127][Pkt Len c2s/s2c min/avg/max/stddev: 158/106 158/106 166/106 2/0][Mapped IP/Port: 93.35.171.209:39033][PLAIN TEXT (HrRgpad)][Plen Bins: 0,0,48,51,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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