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Use iChat behind a company firewall Apps
Many companies block the default port used by most IM clients. However, you can change iChat's port from 5190 to 80, which is the same port your browser uses. Open iChat, then go to Preferences » Accounts » Server Settings, and change the port number from 5190 to 80. You must be offline (iChat: Log out of AIM) before you can make this change.

This will allow iChat to connect to the IM servers, and off to text messaging you go. I'm pretty sure this tip will only work for text messaging, since voice and video chat use ports that are not changable in iChat.

[robg adds: Any impacts on your employment status as a result of using this tip are solely your responsibility :).]
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Use iChat behind a company firewall | 6 comments | Create New Account
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Use iChat behind a company firewall
Authored by: gfxmonk on Apr 24, '07 09:12:04AM

port 80 is for web servers, not browsers... And a lot of firewalls specifically block port 80 because you're not supposed to be hosting a website...



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Use iChat behind a company firewall
Authored by: Anonymous on Apr 24, '07 09:58:31AM

You are wrong. The hint causes iChat to contact the AIM server at server's port 80. It does work.



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port 80
Authored by: macubergeek on Apr 25, '07 02:57:42AM

Actually, the suggester is correct. Outbound to port 80 represents web surfing traffic to internet web sites. He/she means destination port 80.



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Bad idea
Authored by: macubergeek on Apr 25, '07 02:55:58AM

This "hint" is a very very bad idea. Corporate security policy bans iChat and other instant messaging for a very good reason, it's insecure. It is being exploited by the bad guys in a variety of ways. Changing the port you use will not help you for very long. Firewall admins can easily block access to iChat very simply, by blocking outbound access to the host login.oscar.aol.com. That's the server at AOL you authenticate to. If you can't authenticate to this server, you won't be ichattin with anyone. Additionally if instant messaging is banned on your network, it can be detected via IDS. Expect one or two security dudes to visit you at your desk at work and express their displeasure at your hijinks. Just save iChat for when you are at home.



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Good idea here..
Authored by: blueshead on Apr 25, '07 03:16:24AM

I use the free Feather Wifi from Earthlink were I live.. ichat Times out after a minute or 2, although Adium will work.. This has solved the ichat problem.. Thank You..



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what about PAC files
Authored by: kfs27 on Apr 25, '07 08:12:06AM
OS X doesn't work very will with PAC files which is how many people get their proxy settings.

this is an adium bug about it
http://trac.adiumx.com/ticket/224

anyone have anymore info

---
-kenny

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