Apple Mac OS - Manual (Page 19)

Chapter 2 Setting Up and Managing iChat Service 19
Opening Firewall Ports for iChat Service
iChat requires specific ports to be open on your server. If you have a firewall configured
or you are using the Mac OS X Server firewall, you must enable these ports before you
can use iChat.
Depending on the iChat functions you require, make sure the following ports are open.
If you run iChat service on a secure network behind a firewall, you don’t need to
configure firewall settings as long as communication between users is within the
network. Firewall settings are required when communicating outside the firewall.
For more information about the Firewall service and settings, see Network Services
Administration.
Turning iChat Service On
Before you can configure iChat settings, you must turn the iChat service on in Server
Admin.
To turn iChat service on:
1 Open Server Admin and connect to the server.
2 Click Settings, then click Services.
3 Select the iChat checkbox.
4 Click Save.
From the Command Line
You can also start iChat service using the serveradmin command in Terminal. For more
information, see Command-Line Administration.
Setting up iChat
There are two groups of settings on the Settings pane for iChat in Server Admin:
Ports Description
16384-16403 iChat audio/video RTP and RTCP
5060 iChat Session Initiation Protocol
5190 iChat Instant Messenger, file transfer
5222 iChat Server
5223 iChat Server SSL
5269 iChat Server server-to-server
5297, 5678 iChat local UDP
5298 iChat local
7777 iChat Server file transfer proxy