Почему-то wireshark решил при захвате нарушить сортировку пакетов по времени поступления (см. ниже пакеты 470 и 471, wireshark запускали на 89.204.251.127). Кто-нибудь может это объяснить?
Если это важно - на 89.204.251.127 gentoo, ядро 2.6.39-rc2-git2, интернет через ppp0 (mobile broadband).
Правильно ли я понимаю, что жалоба на TCP Previous segment lost и последующий TCP Retransmission необоснована?
No. Time Source Destination Protocol Info
468 5.162199 89.204.251.127 90.151.25.248 TCP 50685 > ssh [ACK] Seq=193 Ack=381673 Win=12291 Len=0 TSV=29662086 TSER=29598234
Frame 468: 68 bytes on wire (544 bits), 68 bytes captured (544 bits)
Linux cooked capture
Internet Protocol, Src: 89.204.251.127 (89.204.251.127), Dst: 90.151.25.248 (90.151.25.248)
Transmission Control Protocol, Src Port: 50685 (50685), Dst Port: ssh (22), Seq: 193, Ack: 381673, Len: 0
No. Time Source Destination Protocol Info
469 5.163276 90.151.25.248 89.204.251.127 SSH Encrypted response packet len=1368
Frame 469: 1436 bytes on wire (11488 bits), 1436 bytes captured (11488 bits)
Linux cooked capture
Internet Protocol, Src: 90.151.25.248 (90.151.25.248), Dst: 89.204.251.127 (89.204.251.127)
Transmission Control Protocol, Src Port: ssh (22), Dst Port: 50685 (50685), Seq: 381673, Ack: 193, Len: 1368
SSH Protocol
No. Time Source Destination Protocol Info
470 5.163302 90.151.25.248 89.204.251.127 SSH [TCP Previous segment lost] Encrypted response packet len=1368
Frame 470: 1436 bytes on wire (11488 bits), 1436 bytes captured (11488 bits)
Linux cooked capture
Internet Protocol, Src: 90.151.25.248 (90.151.25.248), Dst: 89.204.251.127 (89.204.251.127)
Transmission Control Protocol, Src Port: ssh (22), Dst Port: 50685 (50685), Seq: 384409, Ack: 193, Len: 1368
SSH Protocol
No. Time Source Destination Protocol Info
471 5.163279 90.151.25.248 89.204.251.127 SSH [TCP Retransmission] Encrypted response packet len=1368
Frame 471: 1436 bytes on wire (11488 bits), 1436 bytes captured (11488 bits)
Linux cooked capture
Internet Protocol, Src: 90.151.25.248 (90.151.25.248), Dst: 89.204.251.127 (89.204.251.127)
Transmission Control Protocol, Src Port: ssh (22), Dst Port: 50685 (50685), Seq: 383041, Ack: 193, Len: 1368
SSH Protocol
No. Time Source Destination Protocol Info
472 5.163337 89.204.251.127 90.151.25.248 TCP 50685 > ssh [ACK] Seq=193 Ack=383041 Win=12291 Len=0 TSV=29662088 TSER=29598254 SLE=384409 SRE=385777
Frame 472: 80 bytes on wire (640 bits), 80 bytes captured (640 bits)
Linux cooked capture
Internet Protocol, Src: 89.204.251.127 (89.204.251.127), Dst: 90.151.25.248 (90.151.25.248)
Transmission Control Protocol, Src Port: 50685 (50685), Dst Port: ssh (22), Seq: 193, Ack: 383041, Len: 0