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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [FW-1] Messenger
Here is how to block MSN Messenger: All you have to do is block access to the login servers. If the user can't login, they can't use IM. Create 8 different Network Objects (Workstations). MSN1 64.4.13.170 MSN2 64.4.13.179 MSN3 64.4.13.175 MSN4 64.4.13.82 MSN5 207.68.172.251 MSN6 207.68.178.244 MSN7 63.121.98.69 MSN8 64.4.13.17 Then create a group called MSN_Network. Source Your internal and external access users Dest MSN_Network Service Any Action Drop Track Long (or Alert) if you want to slap fingers) This methodology works successfully for all IM types. Hope this clarifies the issue. Cheers, Chris -----Original Message----- From: Steve Crume [mailto:[email protected]] Sent: Wednesday, February 13, 2002 5:17 PM To: [email protected] Subject: Re: [FW-1] Messenger Yes it is unfortunate that any of your present users can now download the new MSN messenger and circumvent past port blocking methods. You will either have to port block port 80 going in/out or block all 169.69.0.0 and 207.68.0.0. network addresses. Almost all the servers MSN uses come from a multitude of servers on these networks. If you load the MSN messenger and log on you can follow the trail of servers that your client will contact(seldom the same). Unfortunately I do not know if too many people are willing to block so many network addresses. Microsoft is spending allot of money to circumvent company firewalls making it near impossible to stop there services from intruding into the corporate world. Reminds me of SPAM. What about it Bill? where is that security you promised. -----Original Message----- From: Andrade Guerra, Marcelo [mailto:[email protected]] Sent: Wednesday, February 13, 2002 4:05 PM To: [email protected] Subject: [FW-1] Messenger I guru´s of the firewall :P I need block messenger service, but messenger now use tcp port 80, i need help please. Thanks Saludos Marcelo Andrade Guerra MCSE Gerencia de Software Sonda S. A. * mailto:[email protected] Http://www.sonda.com * Teatinos 550 3er. Piso * 5605558 * Fax: 2471031 ================================================= To set vacation, Out Of Office, or away messages, send an email to [email protected] in the BODY of the email add: set fw-1-mailinglist nomail ================================================= To unsubscribe from this mailing list, please see the instructions at http://www.checkpoint.com/services/mailing.html ================================================= If you have any questions on how to change your subscription options, email [email protected] ================================================= ================================================= To set vacation, Out Of Office, or away messages, send an email to [email protected] in the BODY of the email add: set fw-1-mailinglist nomail ================================================= To unsubscribe from this mailing list, please see the instructions at http://www.checkpoint.com/services/mailing.html ================================================= If you have any questions on how to change your subscription options, email [email protected] ================================================= ================================================= To set vacation, Out Of Office, or away messages, send an email to [email protected] in the BODY of the email add: set fw-1-mailinglist nomail ================================================= To unsubscribe from this mailing list, please see the instructions at http://www.checkpoint.com/services/mailing.html ================================================= If you have any questions on how to change your subscription options, email [email protected] =================================================
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