[Openswan Users] NAT Traversal

Werner Otto werner.otto at thecloud.net
Wed Mar 30 18:21:12 CEST 2005

Hi All,


I am posting my first issue regarding OpenSwan 2.2.0. I installed it on
Fedora Core 3 2.6.9 kernel. I am getting messages regarding
draft-ietf-ipsec-nat-t-ike-03, draft-ietf-ipsec-nat-t-ike-02_n, these
messages relate to negotiating Nat-Traversal in the IKE. 


I am trying to get ESP packets from a Cisco SOHO 91 situated at
corporate A behind a Nokia Checkpoint Firewall to my VPN server as
listed above. 


When doing a packet trace on the public ip:

17:16:50.481456 IP >

17:16:50.481618 IP >


I am getting ESP packets instead of UDP encapsulated ones. 


My question:

How do I enable udp encapsulation on my server




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