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RE: VoIP over IPsec
From: "Ejay Hire" <ejay.hire () isdn net>
Date: Mon, 17 Feb 2003 17:24:38 -0600

More specifically, dynamic routing protocols like ospf and rip.

-----Original Message-----
From: Petri Helenius [mailto:pete () he iki fi]
Sent: Monday, February 17, 2003 5:21 PM
To: Iljitsch van Beijnum; Steve Feldman
Cc: nanog () nanog org
Subject: Re: VoIP over IPsec

On Mon, 17 Feb 2003, Steve Feldman wrote:

through the corporate enterprise net, Cisco routers with IPSEC/GRE tunnels
over the public Internet.

Maybe a stupid question... why would you need GRE tunneling while IPsec
has a tunnel mode of its own?

Probably because a major router vendor, despite of repeated customer requests,
declined to implement routing across such tunnel mode.


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