RE: linux tcp stack behavior change

From: Askadar
Date: Tue Dec 26 2006 - 21:43:42 EST

> However, I know that plain -sF worked with previous kernels. Using
> nmap-4.00 on yields the same result, so I do not think it is
> caused by a change in nmap code. Could someone with 2.6.13-2.6.17 verify
> that the TCP stack returned a RST?

Works for me on

[root@DS-12 bb]# tcpdump -ni lo &
[root@DS-12 bb]# nmap localhost -n -sX -p 22

Starting Nmap 4.11 ( ) at 2006-12-26 21:26 EST
21:26:09.217187 IP > FP 4139391634:4139391634(0)
win 1024 urg 0
21:26:09.217355 IP > R 0:0(0) ack 4139391635 win
Interesting ports on
22/tcp closed ssh

[root@DS-12 bb]# uname -a
Linux DS-12 2.6.18-ARCH #1 SMP PREEMPT Sun Nov 19 09:14:35 CET 2006 i686
Intel(R) Pentium(R) 4 Mobile CPU 1.80GHz GenuineIntel GNU/Linux

[root@DS-12 bb]# pacman -Q kernel26

- BjÃrn
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