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[FW-1] Instant Messenger bypass FW-1


  • To: [email protected]
  • Subject: [FW-1] Instant Messenger bypass FW-1
  • From: "A, Kaustubh" <[email protected]>
  • Date: Wed, 12 Jun 2002 20:12:04 +0530
  • Reply-to: Mailing list for discussion of Firewall-1 <[email protected]>
  • Sender: Mailing list for discussion of Firewall-1 <[email protected]>
  • Thread-index: AcISEbA85qA8S6NGT/meETAz9C3e7AADZTBg
  • Thread-topic: [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
> -----------------------------------------------------------------------------------
>
>
>

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