From: Richard Weinberger <richard@nod.at>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jan Engelhardt <jengelh@medozas.de>, netfilter-devel@vger.kernel.org
Subject: Re: [PATCH 0/3][RFC] Relationship between conntrack and firewall rules
Date: Fri, 21 Jan 2011 12:13:56 +0100 [thread overview]
Message-ID: <201101211213.57308.richard@nod.at> (raw)
In-Reply-To: <4D395950.8060304@netfilter.org>
Am Freitag 21 Januar 2011, 11:00:48 schrieb Pablo Neira Ayuso:
> On 21/01/11 00:02, Richard Weinberger wrote:
> > Am Donnerstag 20 Januar 2011, 23:52:25 schrieb Jan Engelhardt:
> >> On Thursday 2011-01-20 23:47, Richard Weinberger wrote:
> >>> Hi,
> >>>
> >>> as a firewall admin I would like to see which rules allow
> >>> the connections through my firewall.
> >>> A relationship between conntrack and firewall rules would be nice.
> >>> The next five patches bring this feature to the Linux Netfilter.
> >>>
> >>> First a small example.
> >>> Consider this iptables rules:
> >>> -A INPUT -m state --state ESTABLISHED,RELATED -j APPROVE --rule-id 1
> >>> -A OUTPUT -m state --state NEW,ESTABLISHED,RELATED -j APPROVE --rule-id
> >>> 2 -A INPUT -p tcp --dport 22 -m state --state NEW -j APPROVE --rule-id
> >>> 3 -A INPUT -p icmp -m state --state NEW -j APPROVE --rule-id 4
> >>>
> >>> The APPROVE target is the same as ACCEPT but it stores also a rule id
> >>> into the connection tracking entry.
> >>
> >> What about connmark? You could have used that. Perhaps combined with the
> >> use of -j TRACE that can show which rules were processed before a
> >> verdict was issued.
> >
> > Yeah, I know commark and TRACE but they are quite clumsy to use for such
> > a purpose.
>
> Why are the clumsy for this purpose?
Because I would need more than one iptables command to model a firewall rule.
Or can you show me a simple iptables configuration using connmark which
achieves the same as my APPROVE example above?
//richard
next prev parent reply other threads:[~2011-01-21 11:14 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-20 22:47 [PATCH 0/3][RFC] Relationship between conntrack and firewall rules Richard Weinberger
2011-01-20 22:47 ` [PATCH 1/3] netfilter: add ruleid extension Richard Weinberger
2011-01-20 22:47 ` [PATCH 2/3] netfilter: add APPROVE target Richard Weinberger
2011-01-20 22:47 ` [PATCH 3/3] netfilter: implement ctnetlink_dump_ruleid() Richard Weinberger
2011-01-20 22:47 ` [PATCH] iptables: Add APPROVE target Richard Weinberger
2011-01-20 22:47 ` [PATCH] conntrack: Implement ruleid support Richard Weinberger
2011-01-20 23:17 ` [PATCH 2/3] netfilter: add APPROVE target Jan Engelhardt
2011-01-20 23:22 ` Richard Weinberger
2011-01-20 23:27 ` Jan Engelhardt
2011-01-20 23:30 ` Richard Weinberger
2011-01-20 22:52 ` [PATCH 0/3][RFC] Relationship between conntrack and firewall rules Jan Engelhardt
2011-01-20 23:02 ` Richard Weinberger
2011-01-21 10:00 ` Pablo Neira Ayuso
2011-01-21 11:13 ` Richard Weinberger [this message]
2011-01-21 11:26 ` Pablo Neira Ayuso
2011-01-21 11:56 ` Richard Weinberger
2011-01-21 12:24 ` Pablo Neira Ayuso
2011-01-21 12:53 ` Richard Weinberger
2011-01-21 13:25 ` Pablo Neira Ayuso
2011-01-21 13:38 ` Richard Weinberger
2011-01-21 13:57 ` Pablo Neira Ayuso
2011-01-21 14:11 ` Richard Weinberger
2011-01-21 15:09 ` Mr Dash Four
2011-01-21 0:04 ` Mr Dash Four
2011-01-21 0:10 ` Richard Weinberger
2011-01-21 0:13 ` Mr Dash Four
2011-01-21 9:58 ` secctx support for conntrack-tools [was Re: [PATCH 0/3][RFC] Relationship between conntrack and firewall rules] Pablo Neira Ayuso
2011-01-21 9:56 ` [PATCH 0/3][RFC] Relationship between conntrack and firewall rules Pablo Neira Ayuso
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