On 07/05/2013 02:55 AM, Daniel Pocock wrote:
> 
> I've had problems setting up IPsec sessions using certificates
> 
> Basically, the IKEv2 packets are large UDP packets and they are fragmented
> 
> I believe that using ECDSA instead of RSA certificates reduces the size
> of these packets, but ECDSA is not universally supported.  I'd like to
> understand whether Shorewall can and should support these fragmented UDP
> flows.
> 
> I found a post from 3 December suggesting that IPv6 fragmentation is
> troublesome without a recent kernel so I'm just looking at IPv4 for now.
> 
> Looking at the problem with tcpdump, I typically see UDP packets sent
> with 1644 bytes, slightly bigger than the MTU.
> 
> Are there any specific rules or shorewall.conf settings that need to be
> added/tweaked to make this work?
> 

There is nothing in Shorewall having to do with over-sized UDP packets.

-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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