iptables module for smb browsing

John Mizell john.mizell at sbcglobal.net
Wed Sep 29 15:03:57 UTC 2004


Any idea when we might see the iptables match code for
port scan detection in fedora or rawhide?

--- Alexander Larsson <alexl at redhat.com> wrote:

> On Wed, 2004-09-29 at 09:28 -0400, Charles R.
> Anderson wrote:
> > On Wed, Sep 29, 2004 at 11:00:59AM +0200,
> Alexander Larsson wrote:
> > > In my quest to make SMB browsing work with the
> default firewall rules,
> > > thus fixing:
> > >
>
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=133478
> > >
>
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=113918
> > > 
> > > I have now written a kernel conntrack module
> (attached) that marks
> > > replies to netbios name requests as RELATED to
> the original connection.
> > > This means the default firewall rules will work
> when this module is
> > > loaded. I'm not actually an expert in netbios or
> firewall stuff, so I'd
> > > love if someone who knew this better took a look
> at it and made sure it
> > > looks ok.
> > 
> > Yay!  Thank you!  Does this work for other
> multi/broadcast protocols, 
> > or is it specific to netbios?  I think a generic
> solution would be 
> > nice.
> 
> It hardcodes the netbios port, but i guess more
> ports could be added, ot
> it could be a module parameter.
> 
> I posted this upstream, lets see what they think:
>
https://lists.netfilter.org/pipermail/netfilter-devel/2004-September/016986.html
> 
>
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>  Alexander Larsson                                  
>          Red Hat, Inc 
>                    alexl at redhat.com   
> alla at lysator.liu.se 
> He's a world-famous overambitious messiah in a
> wheelchair. She's a virginal 
> gold-digging lawyer living homeless in New York's
> sewers. They fight crime! 
> 
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