ipsec passthru

[adrian.watmough]

can anyone explain exactly how ipsec passthru works and the difference between passthru and nat traversal?

[jfrahim]

Hi Adrian,

IPSEC-Passthru looks at the isakmp cookie value and IPSec SA SPI information to build the NAT table.

NAT-T on the other hand, detact any NAT devices during the negotiations, and switch over to UDP 4500 for data encryption

Hope that helps

Jazib

[adrian.watmough]

Thanks. Do you know of any documentation that details all of this?