[olug] UPnP on a Linux box

[Rob Townley]

Multicast needs special rules in the firewall.  Are multicast IP addresses
pingable?

Ping 224.0.0.1 from different places on your Lan.
On Jan 2, 2015 1:24 PM, "Eric W. Biederman" <ebiederm at xmission.com> wrote:

> Kevin <sharpestmarble at gmail.com> writes:
>
> > Hello all,
> >
> > I am trying to get UPnP to work on my linux router. Normal people will
> have
> > a linksys or a dlink box acting as their router; I have a CentOS 6.4 box.
> > My clients behind the router are having problems(Android Device Manager
> > can't locate them when connected to the wifi for which the CentOS box is
> > the router, Google Hangouts will work only when I enter that Hangout); I
> > suspect that it's because their UPnP commands don't work. If I connect
> them
> > to my 3G hotspot, everything works fine and dandy. So I'm trying to get
> > UPnP to work, but no commands I've done would have set up UPnP, to my
> > knowledge.
> >
> > I've done some searching and have found
> > https://gitorious.org/igd2-for-linux/ this page as the most promising,
> but
> > the most recent update is from Feb 2013 and I'd have to work from source.
> > While I can do so, I'd prefer something both more recent and with
> > pre-compiled binaries.
> >
> > So does anyone know of pointers to get UPnP working?
> >
> > Here's what I've done in a nutshell to get the routing working:
> > echo 1 > /proc/sys/net/ipv4/ip_forward
> > iptables -t nat -I POSTROUTING -o eth3 -j MASQUERADE #eth3 is my WAN
> interface.
>
> I think that is missing a rule iptables rule in for other direction.
> Something like:
>
>   iptables -t filter -A INPUT -m state --state ESTABLISHED,RELATED -j
> ACCEPT
>
>
> Openwrt and most of the linux based home routers use miniupnpd
> http://miniupnp.free.fr/ That might be worth looking at.
>
> Eric
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