[Openswan Users] NAT not needed on both sides

Jacco de Leeuw jacco2 at dds.nl
Tue Apr 6 19:22:51 CEST 2004

Marcel J.E. Mol wrote:

> Same here: openswan 1.0.2 on a non-NATed hostA and NATed hostB.
> When nat_traversal=yes on both hosts the connection fails.
> When nat_raversal=no on hostB it works fine.

If A initiates the connection, then you may need to forward UDP port 4500
on the NAT device to B. NAT-Traversal uses that port.

Jacco de Leeuw                         mailto:jacco2 at dds.nl
Zaandam, The Netherlands           http://www.jacco2.dds.nl

More information about the Users mailing list