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i have been trying to figure out how to get outgoing file transfers and
voice calls etc working with MSN Messenger through my IPTABLES firewall..
after searching around for a while i found the following information on the
ports and protocols that MSN Messenger uses..
----------------------------
"To configure your network for voice communications and file transfer
Note: This is part of the Guide for Network Administrators. It is not
intended for end users.
This topic describes the settings that MSN Messenger Service uses for
voice communications and file transfer. Perhaps they will be useful to
you in configuring your firewall or proxy server.
For voice communications MSN Messenger Service establishes an outgoing TCP
connection from port 6901 for all voice communications.
In the case of computer-to-computer communications, the call recipient also
uses TCP port 6901.
In the case of computer-to-phone communications, the TCP destination
(Net2Phone) port is between 7801 and 7825.
All voice traffic also uses UDP packets. The user's computer sends and
receives UDP packets at port 6901.
The Net2Phone service sends and receives UDP packets using ports 6801, 6901,
and 2001 to 2120.
For file transfer Both incoming and outgoing TCP connections use this range
of ports: 6891 to 6900. This allows up to 10 simultaneous file transfers per
sender. If you open only Port 6891, users will be able to do only one file
transfer at a time.
The TCP ports need to be configured so that sockets on a port remain open
for extended periods of time."
------------------------------
unfortunately i am a total IPTABLES newbie, and i don't know what i need to
add to my firewall script to get this stuff working..
so.. if anyone can make some meaningful rules with this information, or even
just give me an example and point me in the right direction, i would be
eternally grateful..
tia!
stoo..
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