[Ti] AIM, iChat, etc

[Yuta Hsu]

Ahhhh... yes, that makes sense.  I forgot that the built-in firewall is 
limited to blocking incoming traffic.  I'm behind a wireless router 
using NAT, so other than some ports I'm forwarding to various machines, 
a port-scan comes up empty.

It's been mentioned that having multiple users may help, but I think 
Peet has already done that.  Sounds like getting something like Lilttle 
Snitch is the way to go.  Good luck Peet!

Cheers,
Yuta

On Jun 28, 2004, at 6:43 PM, b wrote:

> Yuta Hsu paused, thought it over, and spoke thusly:
>
>> Well, I just ran a test by starting the firewall and blocking 5190 
>> and was able to log in using iChat and chat successfully.  I even 
>> blocked port 4099 which is another AIM port, and was still able to 
>> chat.  I think AIM has become a bit more flexible in finding ports to 
>> use.  I know you can change the port in the AIM client.
>
> You're blocking "Incoming", you have to block "Outgoing", garden 
> variety' firewall apps don't do that very well.
>
> If your Port 5190 i blocked from sending, from your end, not AOL's, 
> you will NEVER be able to log in to the AIM server. Period.
>
> Get a Port utility, and set it do deny outgoing access, using TCP, on 
> Port 5190, and if you're paranoid, have it block 'sending' to 
> addresses from 0.0.0.0 to 192.255.255.255
>
> that'll do it. "Firewalls' deal with incoming, so of course you can 
> log on, and once logged on you have countless open ports to receive 
> back on, the key is "Block the port that you use to log on".
>
> ~flipper
>
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