netcat strange behaviour
Alex Zbyslaw
xfb52 at dial.pipex.com
Wed Apr 27 02:35:24 PDT 2005
shibbsd at spymac.com wrote:
>mypopserver.pop3: P [bad tcp cksum 2f41 (->71d2)!] 0:40(40) ack 36 win 65535
>[...omitted...]
> 0x0030: ffff 2f41 0000 5553 4552 20XX XXXX XXXX ../A..USER.XXXXX
> 0x0040: XXXX XXXX 0a50 4153 5320 XXXX XXXX XXXX XXXX.PASS.XXXXXX
> 0x0050: XXXX XX0a 5354 4154 0a51 5549 540a XXX.STAT.QUIT.
>[...omitted...]
>
>And my BIG question is:
>should netcat send all these POP3 commands in one packet?
>
I see netcat sending the stuff in separate packets.
And I'd be worried by the bad tcp cksum as well. That shouldn't happen,
and again not something I see.
Is your netcat port up to date? Have you tried just remaking it?
(I'm on FreeBSD 4.11 for reference, and my port is netcat-1.10_2)
--Alex
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