netdev - Multiple end-points behind same NAT

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Message-ID: <45709151.6060803@trustedcs.com>
Date:	Fri, 01 Dec 2006 14:32:17 -0600
From:	Venkat Yekkirala <vyekkirala@...stedcs.com>
To:	netdev@...r.kernel.org
CC:	dgoeddel@...stedcs.com, chanson@...stedcs.com, bphan@...stedcs.com
Subject: Multiple end-points behind same NAT

Hi,

I am wondering if 26sec supports NAT-Traversal for multiple
endpoints behind the same NAT. In looking at xfrm_tmpl it's
not obvious to me that it's supported, at least going by the
following from the setkey man page:

             When NAT-T is enabled in the kernel, policy matching for ESP over
             UDP packets may be done on endpoint addresses and port (this
             depends on the system.  System that do not perform the port check
             cannot support multiple endpoints behind the same NAT).  When
             using ESP over UDP, you can specify port numbers in the endpoint
             addresses to get the correct matching.  Here is an example:

             spdadd 10.0.11.0/24[any] 10.0.11.33/32[any] any -P out ipsec
                 esp/tunnel/192.168.0.1[4500]-192.168.1.2[30000]/require ;

Or is this to be accomplished in a different way?

Thanks,

venkat
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