Playing thru Masquaraded cable modem

  Alpha Centauri Forums
  Support and Troubleshooting
  Playing thru Masquaraded cable modem

profile | register | prefs | faq | search

Author Topic:   Playing thru Masquaraded cable modem

Syndicate posted 07-09-99 09:53 PM ET
Any issues regarding a machine inside a cable modem-hooked-up-to-an- IP-Masquaraded-box trying to connect to another server?
Our network is only doing masquarading, not packet filtering...
Can't seem to do it, and haven't seen any complaints about it elsewhere.. =(
Syndicate posted 07-09-99 09:58 PM ET
I guess I should add some more detail...
Trying to play a direct-ip game.
Can anyone tell me what happens when you try to connect to a server? Does it try to open a reverse-connection on another port(s)? Which ones?
Vulturex posted 07-13-99 12:44 PM ET
I am having the same problem. My ip masquerading machine is a Linux box. When I am trying to connect to someone else my machine makes a connection out to port 47624 both udp and tcp, but a connection is not established. I guess the Alpha Centauri host makes a connection back to my IP, which is blocked by the firewall. I will try to run tcpdump to trace down exactly what is happening with AC's internet connection. Any assistance the AC creators can provide would be nice!
Vulturex posted 07-13-99 03:34 PM ET
I figured it out!
If you are trying to join a game from behind a linux firewall, you need to setup ipautofw, which will forward a bunch of ports from the server to a computer. In this case, you want to forward ports 2300 - 2400 (both tcp and udp) to the computer you are trying to connect from. See the IP Masquerading HOWTO for more instructions.
For hosting a game you need to do the same, but also forward tcp and udp port 47624 to the server you are trying to host on, as well as the ports 2300 - 2400.
Email me at [email protected] if you get this to work or if it causes problems.
To close this thread, click here (moderator or admin only).


Hop to:

Contact Us | Alpha Centauri Home

Powered by: Ultimate Bulletin Board, Version 5.18
© Madrona Park, Inc., 1998.

Author	Topic: Playing thru Masquaraded cable modem
Syndicate	posted 07-09-99 09:53 PM ET Any issues regarding a machine inside a cable modem-hooked-up-to-an- IP-Masquaraded-box trying to connect to another server? Our network is only doing masquarading, not packet filtering... Can't seem to do it, and haven't seen any complaints about it elsewhere.. =(
Syndicate	posted 07-09-99 09:58 PM ET I guess I should add some more detail... Trying to play a direct-ip game. Can anyone tell me what happens when you try to connect to a server? Does it try to open a reverse-connection on another port(s)? Which ones?
Vulturex	posted 07-13-99 12:44 PM ET I am having the same problem. My ip masquerading machine is a Linux box. When I am trying to connect to someone else my machine makes a connection out to port 47624 both udp and tcp, but a connection is not established. I guess the Alpha Centauri host makes a connection back to my IP, which is blocked by the firewall. I will try to run tcpdump to trace down exactly what is happening with AC's internet connection. Any assistance the AC creators can provide would be nice!
Vulturex	posted 07-13-99 03:34 PM ET I figured it out! If you are trying to join a game from behind a linux firewall, you need to setup ipautofw, which will forward a bunch of ports from the server to a computer. In this case, you want to forward ports 2300 - 2400 (both tcp and udp) to the computer you are trying to connect from. See the IP Masquerading HOWTO for more instructions. For hosting a game you need to do the same, but also forward tcp and udp port 47624 to the server you are trying to host on, as well as the ports 2300 - 2400. Email me at [email protected] if you get this to work or if it causes problems.