Most of the services you describe are UDP-based, with the exception of
multicast. NAT hardware/software providers, including Linux and BSD
in-kernel NAT offer ways to map UDP to specific "inside" hosts. The only
downside is that there can be only one host recieving for each of the
services, if those services are within well-defined UDP port ranges.
-john
On Tue, 7 Mar 2000, Javier Romero wrote:
> NAT doesn�t have support for:
> - IP Multicast
> - Routing tables updates
> - DNS Zone Transfers
> - BOOTP
> - Talk, NTalk
> - H.323 (Netmeeting)
> - VDOLive
> - NetShow
> - Net2Phone
> - VXTreme
> - SNMP.
>
> _7aV13r.
> Javier Romero
>
> "Gernot W. Schmied" wrote:
>
> > Hi,
> >
> > Netmeeting uses the following ports:
> >
> > 389/tcp
> > 1503/tcp
> > 1731/tcp
> > 1720/tcp
> >
> > Then everything should pretty much work, with one exception:
> > NO AUDIO, NO VIDEO. This is a result of NAT with H.323.
> > I just gave up on it *sigh*.
> > Let me know if you find something.
> >
> > Cheers,
> > Gernot
> >
> > Javier Romero wrote:
> > >
> > > NetMeeting use 3 diferents ports in 3 differents times.
> > > I don�t remember very well, but you must capture a Netmeeting session
> > > in order to define the right ports.
> > >
> > > _7aV13r.
> > >
> > > paul wrote:
> > >
> > > > Hi friends, i'm using IPchains as my NAT/Firewall
> > > > gateway with a ppp0 interface to the ISP, i can establish a
> > > > connection to another party thru netmeeting, but there isn't any
> > > > video showing up on either site. Are there any ports
> > > > that i have to allow out or in?whatever the case, i need help !
> > > > hahah, thks in advance! rgdsPaul
>
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