How to stop Instant Messaging

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January 9, 2003 at 12:04 am #2308794

How to stop Instant Messaging

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by net designer · about 21 years, 3 months ago

I have a LAN set up behind NAPT router and would like to stop any type of Instant Messaging sipping through from Internet. Any ideas what needs to be done?

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- January 9, 2003 at 3:44 am #3479163
  
  Very hard to stop
  
  by madroxxx · about 21 years, 3 months ago
  
  In reply to How to stop Instant Messaging
  
  IM has made itself very hard to stop by scanning for an open outbound port and establishing a conection there. This makes it about impossible to block through port filtering. You need to look at stopping it by preventing it being installed on machines or by a strict employee policy backed by HR/Management.
  - January 9, 2003 at 4:37 pm #3480311
    
    Reply To: How to stop Instant Messaging
    
    by vawns · about 21 years, 3 months ago
    
    In reply to Very hard to stop
    
    You could also lock down the users’ PC’s with 3rd party software such as Cerberes to prevent them from being able to download IM software.
    - January 10, 2003 at 3:19 am #3480152
      
      If you post software- include link
      
      by tomsal · about 21 years, 3 months ago
      
      In reply to Reply To: How to stop Instant Messaging
      
      Just a little hint for anyone posting trying to be helpful by mentioned software products. You may want to consider post a link to the website of the software you mention, it makes your post that much more valuable.
- January 9, 2003 at 6:51 pm #3480303
  
  possibility !
  
  by sabrodiesel2000 · about 21 years, 3 months ago
  
  In reply to How to stop Instant Messaging
  
  well you can stop it in some sense but not at all.
  
  get a list of the instant messenger softwares and their sites, first block the access to that site and then block the PORT on ur firewall server. This might be the solution but what if there is anew software? you`ll have to block the PORT for that too…
  
  And blocking the window NT`s internal messaging system can be blocked easily by a firewall!
- January 9, 2003 at 6:53 pm #3480301
  
  possibility !
  
  by sabrodiesel2000 · about 21 years, 3 months ago
  
  In reply to How to stop Instant Messaging
  
  well you can stop it in some sense but not at all.
  
  get a list of the instant messenger softwares and their sites, first block the access to that site and then block the PORT on ur firewall server. This might be the solution but what if there is anew software? you`ll have to block the PORT for that too…
  
  And blocking the window NT`s internal messaging system can be blocked easily by a firewall!
- January 9, 2003 at 9:35 pm #3480266
  
  Have you considered trying such …
  
  by thamer · about 21 years, 3 months ago
  
  In reply to How to stop Instant Messaging
  
  You may probably want to read about this product … @ http://www.akonix.com/products/l7.asp
- January 13, 2003 at 11:35 pm #3453573
  
  Easy to stop…
  
  by jschein · about 21 years, 3 months ago
  
  In reply to How to stop Instant Messaging
  
  First of all you know the general chat programs out there… Aol, yahoo, msn, trilia, etc…
  
  Each pc has a “HOSTS” file, locations different on each type of OS. All you have to do is edit that file with notepad, and put:
  
  0.0.0.0 http://www.yahoo.com
  0.0.0.0 http://www.aol.com
  0.0.0.0 ….
  
  Go into each website and find all links to all messenger material and ad 0.0.0.0.
  
  The other solution which would be much faster due to the fact that you do not have to touch each “client” pc, would be to adjust your firewall settings. Normal users should not have any firewall privelages except web browsing if you want and on a case-by-case basis, open ports for all or assign static i.p.’s for specific users and give them more priveliges. Good luck as this takes time to decide in future planning of locking out the misc. things that goes on throughout a small to large business network.
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