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Connection problem



Hi,

It's maybe a little bit off topic, but I think someone in this list can
help me:

I've got a firewall debian potato, kernel 2.2.17pre6, doing masquerading
and other rules over an adsl pppoe line. All worked perfectly but since
two weeks ( without doing any changes ) I'm unable to go to certain
sites. Tcpdump show me that the connection close in the middle.
Something like this:


11:36:16.439327 a.b.c.26.https > d.e.f.36.62968: P
1269:1340(71) ack 214 win 17307 (DF)
11:36:16.495429 d.e.f.36.62969 > a.b.c.21.www: S
10634093:10634093(0) win 8192 <mss 1460,nop,nop,sackOK> (DF)
11:36:16.571944 d.e.f.36.62968 > a.b.c.26.https: . ack 1340
win 7421 (DF)
11:36:16.591005 a.b.c.21.www > d.e.f.36.62969: S
3660606280:3660606280(0) ack 10634094 win 17520 <mss
1460,nop,nop,sackOK> (DF)
11:36:16.591218 d.e.f.36.62969 > a.b.c.21.www: . ack 1 win
8760 (DF)
11:36:16.591569 d.e.f.36.62969 > a.b.c.21.www: P 1:267(266)
ack 1 win 8760 (DF)
11:36:16.719188 a.b.c.21.www > d.e.f.36.62969: P 1:140(139)
ack 267 win 17254 (DF)
11:36:16.722604 d.e.f.36.62968 > a.b.c.26.https: F 214:214(0)
ack 1340 win 7421 (DF)
11:36:16.823751 a.b.c.26.https > d.e.f.36.62968: F
1340:1340(0) ack 215 win 17307 (DF)
11:36:16.824023 d.e.f.36.62968 > a.b.c.26.https: . ack 1341
win 7421 (DF)
11:36:16.871853 d.e.f.36.62969 > a.b.c.21.www: . ack 140 win
8621 (DF)
11:36:18.868878 d.e.f.36.62970 > a.b.c.26.https: S
10636467:10636467(0) win 8192 <mss 1460,nop,nop,sackOK> (DF)
11:36:18.962180 a.b.c.26.https > d.e.f.36.62970: S
3661217994:3661217994(0) ack 10636468 win 17520 <mss
1460,nop,nop,sackOK> (DF)
11:36:18.962414 d.e.f.36.62970 > a.b.c.26.https: . ack 1 win
8760 (DF)
11:36:18.962924 d.e.f.36.62970 > a.b.c.26.https: P 1:97(96)
ack 1 win 8760 (DF)
11:36:19.084207 a.b.c.26.https > d.e.f.36.62970: P 1:151(150)
ack 97 win 17424 (DF)
11:36:19.084930 d.e.f.36.62970 > a.b.c.26.https: P 97:168(71)
ack 151 win 8610 (DF)
11:36:19.086571 d.e.f.36.62970 > a.b.c.26.https: P
168:682(514) ack 151 win 8610 (DF)
11:36:19.217933 a.b.c.26.https > d.e.f.36.62970: . ack 682
win 16839 (DF)
11:36:19.236432 a.b.c.26.https > d.e.f.36.62970: P
151:448(297) ack 682 win 16839 (DF)
11:36:19.376182 d.e.f.36.62970 > a.b.c.26.https: . ack 448
win 8313 (DF)

That's all... no F

I've got similar config wich works perfectly.


Thanks for any help!


PS: as this is not the good place to talk about this, maybe send reply
to me directly.

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