Re: VPN over netfilter NAT

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On Thu, 2004-09-16 at 09:36, Aleksandar Milivojevic wrote:
> > 
> > Is this just an over-simplifying statement that really means "if you're 
> > reading this, then don't even try setting up a NAT-traversing VPN"?
> 
> Yes and no.  Depends on what you mean by VPN.  VPN can be implemented in 
> many different ways.  With IPSec implementation you may run into 
> problems (some solvable, some not).  With user space daemon 
> implementations such as OpenVPN or VTun, you shouldn't have any 
> problems.  Basically it is good idea not to have VPN endpoints behind 
> NAT (if possible, of course).

CIPE (http://sites.inka.de/sites/bigred/devel/cipe.html) works over
NAT anywhere you can get UDP packets back and forth.  It was included
in RH9 and fedora core 1 as a fill-in-the-form option in the network
setup GUI but was dropped in fedora core 2 because it didn't work
with the 2.6 Linux kernel.  CIPE 1.6 claims to work with the 2.6
kernel now, but there still seems to be a problem making it work
with FC2.  
---
  Les Mikesell
   les@xxxxxxxxxxxxxxxx




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