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RE: VoIP over IPsec

  • From: Charles Youse
  • Date: Mon Feb 17 18:26:20 2003

Because you need to use GRE to create a virtual interface on the router and thus enable the use of routing protocols.  At least, that's the only way I know how to do it.

C.

-----Original Message-----
From: Iljitsch van Beijnum [mailto:iljitsch@muada.com]
Sent: Monday, February 17, 2003 6:19 PM
To: 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?





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