Howard, This is actually a known freeswan problem, you need to make the packets of the freeswan ipsec* smaller then the ppp*. To accomplish this, put in your ipsec.conf `overridemtu=` Hopefully this will solve your problem.
Cheers, Scott > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Howard Lowndes > Sent: Wednesday, 2 January 2002 12:14 > To: Mail List - SLUG > Subject: [SLUG] MTU problems ?? > > > I have set up a VPN over an ADSL link and I am getting traffic snarl-ups > as a result. > > Previously this link was running without VPN and over PSTN. > > My guess is that the server is sending out packets which are now too big. > > 1. Am I correct in assuming that both freeswan and ADSL add over head to > the packets? I seems to recall the figure of an MTU of 1412 coming in > some where. > > 2. Am I correct in assuming that the best place to fix this is in the > ifconfig setting for that particular interface on the server? Currently > it has MTU 1500. What would be a suitable setting here. I also guess, > since this is Redhat, that I am going to have to look in > /etc/rc.d/init.d/network, is this assumption correct? > > TIA. > > -- > Howard. > LANNet Computing Associates - Your Linux people > Contact detail at http://www.lannetlinux.com > "We are either doing something, or we are not. > 'Talking about' is a subset of 'not'." > > -- > SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ > More Info: http://lists.slug.org.au/listinfo/slug -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
