[Openswan Users] MTU problems

Peter Farrow peter at farrows.org
Mon Jul 17 00:13:37 CEST 2006

Hi There,

It seems MTU problems abound with VPN over openswan, MTU problems that I 
didn't get when I ran Freeswan.

I have to manually set the MTU on all windows 2003 servers and Linux 
boxes so that they can communicate over the openswan tunnel between sites.

I am setting it to 1492.  I never had to do this when I ran redhat 9 and 

Running Centos 4.3 and open swan after a firewall machine upgrade has 
introduced these MTU issues.

Is there a fix, am I doing  something wrong?  The only change has been 
the upgrade to Centos 4.3 and Openswan....

Hope someone can shed some light on this...

thanks in advance


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