RE: ATM PVC as security barrier - ATMARP issue



Does RFC 2684 resolve the ATMARP issue of host impersonation described in RFC 
2225?

. . . In particular, the bridging architecture discussed in RFC 2684 section 7 
has the same vulnerabilities as other bridging architectures.

Is this referring to the requirement for a receiving ATM interface to look into 
a bridged PDU and learn; which makes it vulnerable to forged associations 
between foreign destination and an ATM station. Is this the ATMARP host 
impersonation issue referenced earlier?


ATMARP packets are not authenticated.  This is a potentially serious flaw in 
the overall system by allowing a mechanism by which corrupt information may be 
introduced into the server system.

Are there other security issues with ATM on a firewall?

Thanks Enno, I missed that.
> RE: ATM PVC as security barrier - ARMARP issue
> From: "Enno Rey" <erey@security-academy.de>
> Date: Sun, 10 Jun 2001 16:39:50 +0200
> 
> Hi,
> 
> wasn't RFC 1483 outdated by RFC 2684?
> 
> Regards,
> 
> Enno
> 
> -----Original Message-----
> From: firewalls-owner@Lists.GNAC.NET
> [mailto:firewalls-owner@Lists.GNAC.NET]On Behalf Of Abdulkareem Kusai
> Sent: Sonntag, 10. Juni 2001 15:12
> To: firewalls@Lists.GNAC.NET
> Subject: ATM PVC as security barrier - ARMARP issue
> 
> Does RFC-1483 resolve the ATMARP issue of host impersonation described in RFC 
>2225?

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