Re: Blocking IM servers

From: NeoSadist (neos@dist)
Date: 12/07/02


From: "NeoSadist" <neos@dist>
Date: Sat, 7 Dec 2002 04:48:52 -0700


"Apu - N" <Nahasapeemapetilon@simpsons.net> wrote in message
news:BbaI9.3052$Vf3.35394@vixen.cso.uiuc.edu...
> Hi,
> This is for a project of mine. We want to block all IM using the
> firewall. Where can I get a list of IP addresses or server names of the
> major IM services? I googled around for a bit and did not come up with
> anything relavant. Any help would be appreciated.
> Thanks
> /A
>

Oh hey, sorry, forgot to give out the web addresses that the messengers use:

MSN MESSENGER:
oe.hotmail.com
sea2.oe.hotmail.com
services.msn.com

ICQ:
web.icq.com
ar.atwola.com
pr.atwola.com

These could be anything, and I just listed them directly from my firewall
log upon logging into the services. Remember, instant messengers connect to
whoever you're sending IM's to, so you'll also see an assortment of IP's if
they're busy chatting.



Relevant Pages

  • two way communication using NAT and port forwarding
    ... How does instant messengers like ICQ work from behind the firewall. ... seems to be done using NAT or port forwarding. ... When the client messenger initiates a request from private IP like ...
    (comp.security.firewalls)
  • Help? n stuff
    ... I been using the internet for 10 ... on my windows 98se machine. ... , icq,. ... saw nothing mentioning what a firewall might or might not report. ...
    (comp.security.firewalls)
  • Re: Data Mining for PIX Firewall Logs
    ... Data Mining for PIX Firewall Logs ... > Can anyone here please suggest to me some type of logging and more ...
    (Pen-Test)
  • RE: [fw-wiz] Log checking?
    ... tend to evaluate where and what logging is important in a different light. ... I've been happy to analyze a year's worth of firewall denied logs, ... have denied firewall traffic logs or denied logs with any relevant data. ...
    (Firewall-Wizards)
  • Re: Audit logons from outside local ip range
    ... > implement a software firewall to track logon attempts from unauthorized IP ... > address as you can with Ipsec filtering policy, ... > give you the kind of logging you want and is more difficult to configure ... >> I know how to setup enabling logging successful and unsuccessful logins. ...
    (microsoft.public.windows.server.security)