Another small sugestion: Look at your iptables configuration file (not a gui). Here there is an example of a well configured mask in my iptables file:

/sbin/iptables -A INPUT -s 55.66.77.0/24 -j ACCEPT

Regards

--- El mar, 11/8/09, Anne Wilson <cannewilson@googlemail.com> escribió:

De: Anne Wilson <cannewilson@googlemail.com>
Asunto: Re: [CentOS] CentOS Digest, Vol 55, Issue 10
Para: "CentOS mailing list" <centos@centos.org>
Fecha: martes, 11 agosto, 2009 1:35

On Monday 10 August 2009 22:39:21 Ed Warner wrote:
> > I tried your suggestions without success. ip-up.local is executable in
> > a bash console and if I do so, I get this message: "iptables v1.3.5:
> > invalid mask '255' specified Try 'iptables -h' for more information.
> > A subent mask of 255? In my opinion it should be something like
> > <address>/24 or 255.255.255.0.
> > Seems to me that your settings are not correct, firestarter doesn't know
> > your subnet mask.
> >
> >
> > regards
> > Olaf
>
> That message is what I don't understand. My subnet is declared correctly, I
> even went back and checked. Firestarter says it starts but doesn't seem to
> enable NAT because nothing behind the firewall can reach the internet.
>
Small suggestion - check that you haven't inadvertantly typed a ',' instead of
a '.'

Anne
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