On Nov 16, 2011, at 1:45 PM, Tero Kivinen wrote:

> Yoav Nir writes:
>>> So you still didn't explain what GRE does better than modern IPsec
>>> tunneling?
>> 
>> I think GRE (or any tunnel that is not IPsec - like L2TP) allows
>> them to avoid having to deal with RFC 4301 stuff like SPD. The only
>> selector they need is for the GRE tunnel (protocol 43?) or the L2TP
>> tunnel (UDP 1701). 
> 
> I.e. bypass the security mechanishms provided the security protocol. 

Yes!

>> That means that your security policy is effectively determined by
>> the routing protocol.
> 
> I.e. move the security from the security protocol to something else
> which is not a security protocol. Is this really something we want to
> do?

Define "we"

> Who is going to make sure the end result is secure?

The customer

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