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nuclear launch detected
How to Block IM/AIM Services?
Im trying to block AIM on my network but i cant find a solution for my setup....
i asked around and this is what i found
- AIM client uses port 5190, block that... done
- however savvy users can set the port to something different
- AIM Express uses a java plugin
- so then the best method is to block the DNS server of oscar.login.aol.com
however my router (Netgear MR814) does not have such options as blocking a specific outside ip, it only lets me block ips from my own network or outside ports....
any helps?
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Goldfish
Re: How to Block IM/AIM Services?
Originally posted by kpxgq
however my router (Netgear MR814) does not have such options as blocking a specific outside ip, it only lets me block ips from my own network or outside ports.
Well that's your problem - time to upgrade to a firewall router (SonicWall, Zyxel, etc) or stick a software firewall in between your network and the router.
Last edited by mshe; 04-19-2004 at 01:06 PM.
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You could look into a Linux-based firewall box. Using IPcop possibly?
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Hammerhead Shark
If you are on a active directory domain then you can create group policies that will prevent users from doing certain things such as installing programs. That's just one example there are a variety of settings that can be configured, it may or may not work for your needs but if you're on an AD domain it's worth looking into.
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Crash Test Dummy
If you can edit the HOSTS file on your local computers, you can point "oscar.login.aol.com" to a bogus IP address. But a savvy user would find the problem and fix it.
If you're hosting your own DNS (like in an Active Directory domain), you could do a similar redirect, but the a savvy user could bypass that by pointing to a different DNS server or editing the HOSTS file to override it.
If you want to block it at the firewall, you'll probably need something more full-featured than a Netgear router. Using a computer running IPCop might be a good choice, and it's free.
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Hammerhead Shark
What sort of network is this where you're using only a Netgear router?
Last edited by jck8r; 04-20-2004 at 05:04 PM.
Quiet PC.
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gran tiburón blanco
Re: How to Block IM/AIM Services?
Originally posted by kpxgq
Im trying to block AIM on my network but i cant find a solution for my setup....
i asked around and this is what i found
- AIM client uses port 5190, block that... done
- however savvy users can set the port to something different
- AIM Express uses a java plugin
- so then the best method is to block the DNS server of oscar.login.aol.com
however my router (Netgear MR814) does not have such options as blocking a specific outside ip, it only lets me block ips from my own network or outside ports....
any helps?
That depends on the programs. Some dynamically change when you block them. And they will go as far as using port 80 if need be. Others you can just change the hosts or block a specific port.
Eric
Last edited by ewitte; 04-23-2004 at 01:21 PM.
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Reef Shark
hmmm
You should be able to prevent the user from running "aim.exe" based on the hash value in the group policy. That way, even if the installation directory changes, it would still work, and it won't be affected by port or IP. I hope this helps.
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Aw, come on why do you wanna block people from using IM services, they are the best way to get a hold of people. I mean is this a buisness network that they should be using it or a school?
Just curiouse why you wanna block those programs.
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