linux-kernel - Re: [PATCH] chaostables

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 09 Mar 2007 09:35:37 +0000
From:	Amin Azez <azez@...mechanic.net>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
CC:	Patrick McHardy <kaber@...sh.net>,
	James Morris <jmorris@...ei.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Netfilter Developer Mailing List 
	<netfilter-devel@...ts.netfilter.org>
Subject: Re: [PATCH] chaostables

* Jan Engelhardt wrote, On 08/03/07 20:26:
> xt_portscan needs to keep track of what packets the machine has already 
> seen. So on the first SYN, the connection is marked with "1". (Then we 
> send our SYN-ACK... and the connection turns ESTABLISHED.) The next 
> packet that is received will be an ACK or an RST. But it must come 
> _exactly after_ the SYN, so just using --tcp-flags ACK will not work. A 
> state which can be remembered is required. For that, an automaton is 
> used, whose state is saved in the connection mark.

There would me more point in having this as a new match if it didn't
trample on the connection mark, but used it's own slot or flag-bit.

Sam
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/