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Web server works but not proprietary software with IP address.

Below is host filter by problem IP. Is there anything practical from this filter that could be done to determine solution? The proprietary software gives a "unable to communicate message" in user interface.

 15 110.947801 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 14 102.947993 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 13 98.947288 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 12 96.947261 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 11 95.946641 192.168.26.187 172.17.1.36 TCP 66 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 10 79.939501 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 9 71.939671 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 8 67.939751 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 7 65.938795 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 6 64.938793 192.168.26.187 172.17.1.36 TCP 66 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 5 15.002579 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 4 7.001431 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 3 3.000346 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 2 1.000257 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 1 0.000000 192.168.26.187 172.17.1.36 TCP 66 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM

click to hide/show revision 2
None

updated 2024-02-09 14:57:42 +0000

grahamb gravatar image

Web server works but not proprietary software with IP address.

Below is host filter by problem IP. Is there anything practical from this filter that could be done to determine solution? The proprietary software gives a "unable to communicate message" in user interface.

 15 110.947801  192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
14  102.947993  192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
13  98.947288   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
12  96.947261   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
11  95.946641   192.168.26.187  172.17.1.36 TCP 66  65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
10  79.939501   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
9   71.939671   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
8   67.939751   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
7   65.938795   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
6   64.938793   192.168.26.187  172.17.1.36 TCP 66  58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
5   15.002579   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
4   7.001431    192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
3   3.000346    192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
2   1.000257    192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
1   0.000000    192.168.26.187  172.17.1.36 TCP 66  61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
SACK_PERM

Web server works but not proprietary software with IP address.

Below is host filter by problem IP. Is there anything practical from this filter that could be done to determine solution? The proprietary software gives a "unable to communicate message" in user interface.

 15 110.947801  192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
14  102.947993  192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
13  98.947288   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
12  96.947261   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
11  95.946641   192.168.26.187  172.17.1.36 TCP 66  65323 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
10  79.939501   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
9   71.939671   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
8   67.939751   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
7   65.938795   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
6   64.938793   192.168.26.187  172.17.1.36 TCP 66  58866 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
5   15.002579   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
4   7.001431    192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
3   3.000346    192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
2   1.000257    192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
1   0.000000    192.168.26.187  172.17.1.36 TCP 66  61764 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM

Here is webserver working ok lines 60...67: 60 11.448615 172.17.1.36 192.168.26.187 TCP 1480 80 → 54534 [PSH, ACK] Seq=5138 Ack=311 Win=10000 Len=1426 [TCP segment of a reassembled PDU] 61 11.451812 172.17.1.36 192.168.26.187 HTTP 423 HTTP/1.1 200 OK (text/html) 62 11.451844 192.168.26.187 172.17.1.36 TCP 54 54534 → 80 [ACK] Seq=311 Ack=6933 Win=131328 Len=0 63 12.972737 192.168.26.187 172.17.1.36 TCP 54 54534 → 80 [FIN, ACK] Seq=311 Ack=6933 Win=131328 Len=0 64 12.980260 172.17.1.36 192.168.26.187 TCP 54 80 → 54534 [ACK] Seq=6933 Ack=312 Win=10000 Len=0 65 12.980260 172.17.1.36 192.168.26.187 TCP 54 80 → 54534 [FIN, ACK] Seq=6933 Ack=312 Win=10000 Len=0 66 12.980571 192.168.26.187 172.17.1.36 TCP 54 54534 → 80 [ACK] Seq=312 Ack=6934 Win=131328 Len=0 67 33.029888 192.168.26.187 172.17.1.36 TCP 66 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM

Here is opening proprietary software lines 68...75: 68 34.029683 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 69 36.030149 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 70 40.030071 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 71 48.030306 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 72 72.021803 192.168.26.187 172.17.1.36 TCP 66 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 73 73.021924 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 74 75.021372 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM 75 79.022032 192.168.26.187 172.17.1.36 TCP 66 [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
click to hide/show revision 4
None

updated 2024-02-09 15:22:59 +0000

Chuckc gravatar image

Web server works but not proprietary software with IP address.

Below is host filter by problem IP. Is there anything practical from this filter that could be done to determine solution? The proprietary software gives a "unable to communicate message" in user interface.

Here is webserver working ok lines 60...67: 

60  11.448615   172.17.1.36 192.168.26.187  TCP 1480    80 → 54534 [PSH, ACK] Seq=5138 Ack=311 Win=10000 Len=1426 [TCP segment of a reassembled PDU]
61  11.451812   172.17.1.36 192.168.26.187  HTTP    423 HTTP/1.1 200 OK  (text/html)
62  11.451844   192.168.26.187  172.17.1.36 TCP 54  54534 → 80 [ACK] Seq=311 Ack=6933 Win=131328 Len=0
63  12.972737   192.168.26.187  172.17.1.36 TCP 54  54534 → 80 [FIN, ACK] Seq=311 Ack=6933 Win=131328 Len=0
64  12.980260   172.17.1.36 192.168.26.187  TCP 54  80 → 54534 [ACK] Seq=6933 Ack=312 Win=10000 Len=0
65  12.980260   172.17.1.36 192.168.26.187  TCP 54  80 → 54534 [FIN, ACK] Seq=6933 Ack=312 Win=10000 Len=0
66  12.980571   192.168.26.187  172.17.1.36 TCP 54  54534 → 80 [ACK] Seq=312 Ack=6934 Win=131328 Len=0
67  33.029888   192.168.26.187  172.17.1.36 TCP 66  58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
SACK_PERM

Here is opening proprietary software lines 68...75: 

68  34.029683   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
69  36.030149   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
70  40.030071   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
71  48.030306   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
72  72.021803   192.168.26.187  172.17.1.36 TCP 66  50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
73  73.021924   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
74  75.021372   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
75  79.022032   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
SACK_PERM
click to hide/show revision 5
None

updated 2024-02-09 15:23:50 +0000

Chuckc gravatar image

Web server works but not proprietary software with IP address.

Below is host filter by problem IP. Is there anything practical from this filter that could be done to determine solution? The proprietary software gives a "unable to communicate message" in user interface.

Here is webserver working ok lines 60...67:60...66:

60  11.448615   172.17.1.36 192.168.26.187  TCP 1480    80 → 54534 [PSH, ACK] Seq=5138 Ack=311 Win=10000 Len=1426 [TCP segment of a reassembled PDU]
61  11.451812   172.17.1.36 192.168.26.187  HTTP    423 HTTP/1.1 200 OK  (text/html)
62  11.451844   192.168.26.187  172.17.1.36 TCP 54  54534 → 80 [ACK] Seq=311 Ack=6933 Win=131328 Len=0
63  12.972737   192.168.26.187  172.17.1.36 TCP 54  54534 → 80 [FIN, ACK] Seq=311 Ack=6933 Win=131328 Len=0
64  12.980260   172.17.1.36 192.168.26.187  TCP 54  80 → 54534 [ACK] Seq=6933 Ack=312 Win=10000 Len=0
65  12.980260   172.17.1.36 192.168.26.187  TCP 54  80 → 54534 [FIN, ACK] Seq=6933 Ack=312 Win=10000 Len=0
66  12.980571   192.168.26.187  172.17.1.36 TCP 54  54534 → 80 [ACK] Seq=312 Ack=6934 Win=131328 Len=0
67  33.029888   192.168.26.187  172.17.1.36 TCP 66  58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM

Here is opening proprietary software lines 68...75:67...75:

67  33.029888   192.168.26.187  172.17.1.36 TCP 66  58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
68  34.029683   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
69  36.030149   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
70  40.030071   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
71  48.030306   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 58831 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
72  72.021803   192.168.26.187  172.17.1.36 TCP 66  50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
73  73.021924   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
74  75.021372   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM
75  79.022032   192.168.26.187  172.17.1.36 TCP 66  [TCP Retransmission] 50882 → 44818 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM