On 2003-03-20 14:08, John Fitzgibbon <[EMAIL PROTECTED]> wrote:
> Notes:
> X is the remote machine.
> Y is my server, (FreeBSD 4.7-STABLE, built 2003/01/06)
>
> tcpdump showing 2 remote connections repeatedly sending "ack 1":
>
> 09:16:10.236812 X.64670 > Y.http: . ack 1 win 32589
> 09:16:10.236879 Y.http > X.64670: . ack 489 win 58400 (DF)
> 09:16:10.242978 X.64670 > Y.http: . ack 1 win 32589
> 09:16:10.243037 Y.http > X.64670: . ack 489 win 58400 (DF)
> 09:16:10.248883 X.64677 > Y.http: . ack 1 win 32767
> 09:16:10.248946 Y.http > X.64677: . ack 25 win 58400 (DF)
> 09:16:10.255044 X.64670 > Y.http: . ack 1 win 32589
> 09:16:10.255123 Y.http > X.64670: . ack 489 win 58400 (DF)
> 09:16:10.262925 X.64677 > Y.http: . ack 1 win 32767
> 09:16:10.262989 Y.http > X.64677: . ack 25 win 58400 (DF)
> 09:16:10.268842 X.64670 > Y.http: . ack 1 win 32589
> 09:16:10.268905 Y.http > X.64670: . ack 489 win 58400 (DF)
> 09:16:10.275241 X.64670 > Y.http: . ack 1 win 32589
> 09:16:10.275303 Y.http > X.64670: . ack 489 win 58400 (DF)
Hmmm, is this repeatable? Can you try to grab the output of the
following command in a log file while it happens?
# tcpdump -n -v -s 128 -XX port 80
- Giorgos
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