Hi!
Maybe this is the right place to this problem. We are using linux machine
as a firewall in our firm (TIS fwtk). Problem is that with kernel version
2.0.35 and 2.0.36-pre14 we seem to suffer occasional hangs. With
2.1.126-pre2 hangs seem to fade away but then fwtk's http-gw doesn't
seem to work correctly. I always get network connection reset from
netscape when using cgi-binaries with POST-type forms. This happens
both with linux and NT clients so it doesn't seem to be connected with OS.
I've managed to isolate part of the transmission with tcpdump, but problem
is that I don't understand why this problem happens with 2.1-series
but not 2.0 series. Here's the dump (ovi is firewall).
17:35:56.945017 ovi.carelian.fi.www > sasu15.carelian.fi.1274: P
27474:28206(732) ack 654 win 32120 (DF) (ttl 64, id 3695)
17:35:56.946374 sasu15.carelian.fi.1274 > ovi.carelian.fi.www: . ack 28206
win 8 007 (DF) (ttl 128, id 58385)
17:35:56.946408 ovi.carelian.fi.www > sasu15.carelian.fi.1274: P
28206:28258(52) ack 654 win 32120 (DF) (ttl 64, id 3696)
17:35:56.958871 ovi.carelian.fi.www > sasu15.carelian.fi.1274: P
28258:28988(730) ack 654 win 32120 (DF) (ttl 64, id 3698)
17:35:56.960212 sasu15.carelian.fi.1274 > ovi.carelian.fi.www: . ack 28988
win 8760 (DF) (ttl 128, id 58641)
17:35:56.960242 ovi.carelian.fi.www > sasu15.carelian.fi.1274: P
28988:29048(60) ack 654 win 32120 (DF) (ttl 64, id 3699)
17:35:57.043119 ovi.carelian.fi.www > sasu15.carelian.fi.1274: R
29560:29560(0) ack 654 win 32120 (DF) (ttl 64, id 3702)
Why this reset? I can't find any reason why connection should be
reset in this time and it certainly doesn't happen with 2.0-series
of kernels. And this consistently happens with all those transmissions.
It's possible that http-gw does something funny but question is what?
17:35:57.159539 ovi.carelian.fi.www > sasu15.carelian.fi.1274: P
28988:29048(60) ack 654 win 32120 (DF) (ttl 64, id 3704)
17:35:57.159996 sasu15.carelian.fi.1274 > ovi.carelian.fi.www: R
264155987:264155987(0) win 0 (ttl 128, id 58897)
So if you have any ideas how to debug this. That would greatly
appreciated.
Thanks,
Juhani Rautiainen
--
Juhani Rautiainen [EMAIL PROTECTED]
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