netdev - Re: [RFD] iptables: mangle table obsoletes filter table

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, 12 Oct 2007 15:23:33 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Al Boldi <a1426z@...ab.com>
CC:	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFD] iptables:  mangle table obsoletes filter table

Al Boldi wrote:
> Patrick McHardy wrote:
> 
>>Al Boldi wrote:
>>
>>>Well, for example to stop any transient packets being forwarded.  You
>>>could probably hack around this using mark's, but you can't stop the
>>>implied route lookup, unless you stop it in prerouting.
>>
>>This also works fine in FORWARD with a little extra overhead.
>>If you really have to save resources, you should use PREROUTING/raw
>>to also avoid the creation of a connection tracking entry.
> 
> 
> Yes sure, if you use nat.

Conntrack.

> But can you see how forcing people into splitting 
> their rules across tables adds complexity.  And without ipt_REJECT patch, 
> they can't even use REJECT in prerouting, which forces them to do some 
> strange hacks.
> 
> IMHO, we should make things as easily configurable as possible, and as things 
> stand right now, the filter-table is completely useless for 99% of 
> use-cases.


Sure, as I said, patches to remove the arbitary restrictions to
tables are welcome, but please do this for all targets and
matches which allow this, not only REJECT. And if you include a
seperate (tested) patch for the IPv4 and IPv6 REJECT targets
I'll consider it as well.
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html