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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [FW-1] [fw-1] Instant Messenger bypass FW-1
Just black all the AOL servers corresponding to login.oscar.aol.com by IP not by port. -----Original Message----- From: Mailing list for discussion of Firewall-1 [mailto:[email protected]] On Behalf Of A, Kaustubh Sent: Wednesday, June 12, 2002 9:05 AM To: [email protected] Subject: [FW-1] [fw-1] Instant Messenger bypass FW-1 Folks, I came to know about an article of Gartner saying that their are some IM bypassing Firewall by scanning open ports. Has anybody tested this CP FW-1 NG? I am afraid if this is a problem with FW-1!!! Firewall Bypass Technology AOL's Instant Messenger has a uniquely slippery client that is designed to bypass firewall port blocking technology, making the product easy to configure from behind a firewall. For example, the AOL client will use any available port, scanning even those reserved for domain naming system (DNS) lookup. This technology enables unsophisticated users to sneak past a firewall with relative ease, effectively establishing breaches in the corporate firewall. Kaustubh A. Technical Consultant HP Services ------------------------------------------------------------------------ ----------- 101-105 Enterprise Center, CTS#55 Off Neharu Road, Vile Parle (East) Mumbai 400099. *+91 (0) 22.616.7331 *GSM:*: [email protected] URL: http://www.ho.com/in ------------------------------------------------------------------------ ----------- ================================================= 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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