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IPSEC Transport Mode with tunnel gre

Hi all,

I've two router with a tunnel gre. I need IPSEC between them too. In my architecture, the IP address of the peer Ipsec is different from the destination address of the tunnel gre. In this scenario, can I do IPSEC in transport mode or i obliged to do Tunnle mode?

Thanks in advance

Gianluca

1 REPLY
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Re: IPSEC Transport Mode with tunnel gre

Yes if you need to do GRE over IPsec in tranport mode, then both will have to match. If you need to use different peers then tunnel mode is the way to go.

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