Re: Netmeeting and messenger ports

[Esteban Ribicic <eribicic@UolSinectis.com>]

yo use los modulos de pom (patch o matic) que estan en netfilter.org
pareciera ser que andan.

suerte


On Tue, 2003-05-13 at 13:53, Carlos Ble wrote:
> El Martes, 13 de Mayo de 2003 15:04, Pedro C. Arias escribió:
> > Hello, I use NAT to connect internet my internal network trougth a Firewall
> > make with iptables, i use NAT, but when somebody external to my network
> > send me a file messenger say "Error to receive File ...." somebody has this
> > problem ?, with netmeteeng too can't connect
> >
> > Help me ...
> >
> > Thanks
> > Pedro
> > Rosario - argentina
> 
> Hi Pedro. I think that we both can talk in spanish but let me write in
> english to let people to correct to me if im wrong.
> There are some problems with microsoft pptp that maybe corrected with
> the linux pptp. Loock for it in google.
> For netmeeting and messenger you must open some ports. One solution is
> to do DNAT to a specified internal address. This is a example:
> 
> # Neetmeeting ports:
> iptables -t nat -A PREROUTING -p tcp --dport 389 -i <interface> -j DNAT \
> --to 192.168.0.20
> iptables -t nat -A PREROUTING -p tcp --dport 522 -i <interface> -j DNAT \
> --to 192.168.0.20
> iptables -t nat -A PREROUTING -p tcp --dport 1503 -i <interface> -j DNAT \
> --to 192.168.0.20
> iptables -t nat -A PREROUTING -p tcp --dport 1720 -i <interface> -j DNAT \
> --to 192.168.0.20
> iptables -t nat -A PREROUTING -p tcp --dport 1731 -i <interface> -j DNAT \
> --to 192.168.0.20
> 
> # Messenger ports:
> iptables -t nat -A PREROUTING -p tcp --dport xxxxx -i <interface> -j DNAT \
> --to 192.168.0.20
> 
> This corrects the problem for one user but the problem still when many
> users wants to use netmeeting. Nowdays im loocking for a solution too.
> 
> Suerte.