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Re: firewall question
- To: Ira Abramov <lists-linux-il(at-nospam)ira.scso.com>
- Subject: Re: firewall question
- From: Dani Arbel <darbel(at-nospam)techunix.technion.ac.il>
- Date: Tue, 11 Sep 2001 12:08:31 +0300 (IDT)
- Cc: IGLU Mailing list <linux-il(at-nospam)iglu.org.il>
- Delivered-To: iglu.org.il-linux-il@iglu.org.il
- In-Reply-To: <Pine.LNX.4.33_heb2.09.0109111149030.13736-100000@green>
- Sender: linux-il-bounce(at-nospam)cs.huji.ac.il
for an example of iptables implementation see:
http://damyen.technion.ac.il/~dani/fw-adsl.sh
Dani
On Tue, 11 Sep 2001, Ira Abramov wrote:
> On Tue, 11 Sep 2001, Nadav Har'El wrote:
>
> > In iptables (the newer 2.4 firewall mechaism) this is not so: the same
> > rule with the necessary syntax changes,
> > -A OUTPUT -p TCP --dport whois --sport 1024: -j ACCEPT
> > -A INPUT -p TCP ! --syn --sport whois --dport 1024: -j ACCEPT
> > will not be applied to forwarded packets at all.
>
> then what's the point in stateful inspection? :-))))
>
> I'm sure you meant well, but the above example would have flunked you in
> iptables 101.
>
> --
> The man with the golden bun
> Ira Abramov
>
>
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