Re: ipsec tunnels & packet length issues

2003-10-29 Thread Helge Oldach
Eric Masson: >> "Michael" == Michael Sierchio <[EMAIL PROTECTED]> writes: > > Michael> You should allow for an IP header with options and the ESP > Michael> header, which is smaller than 1450. For SKIP I use 1366 as the > Michael> advertised MTU, and for IPsec usually 1436, unless I need to > M

Re: ipsec tunnels & packet length issues

2003-10-29 Thread Eric Masson
> "Helge" == Helge Oldach <[EMAIL PROTECTED]> writes: Hello Helge, Helge> Actually this is the case. I'd like... Helge> Or better, it *should* be happening - Helge> I don't know if you see the ICMPs or not. Nope no "message too long" icmp packet returned to originator (nothing in tcpdum

Re: ipsec tunnels & packet length issues

2003-10-29 Thread Company 2210
So, what would be a suitable MTU value for an ESP encrypted packet using Blowfish? Thanks - Original Message - From: "Helge Oldach" <[EMAIL PROTECTED]> To: "Eric Masson" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, October 29, 2003 9:04 AM Subject: Re: ipsec tunnels & pac

IPSEC in tunnel mode ( possible? )

2003-10-29 Thread Nucleo de Pesquisa e Desenvolvimento
Hi everyone, I know it is kind an off-topic question but maybe another network admin have already faced the following: client--[__ipsec__]--gw--[__ip__]--internet I, trying to secure a wireless link, want to have my clients using ipsec on the segment between the gateway gw and the

Re: ipsec tunnels & packet length issues

2003-10-29 Thread Lars Eggert
Eric Masson wrote: If i reduce lan interface mtu on "Host" to approximately 1450, the tunnel works fine, so it seems that "Tunnel Endpoint" can't process correctly packets with a size of 1500 bytes. If more information regarding this issue is needed, just ask. Is this a known issue ? Except playin

RE: IPSEC in tunnel mode ( possible? )

2003-10-29 Thread Lachlan
I'm not sure if my guess is correct. But instead of using windows over ipsec, i would use 2 FreeBSD boxes. eg, Client Host -- [ipsec on bsd] -- (( wirless )) -- [ipsec on bsd to decrypt] -- (( internet )) Not sure if that's what you're trying to do, was a little hard to understand. If that i

IPv6 hassles.

2003-10-29 Thread paul van den bergen
Hi all. I am having troubles understanding and implementing an IPv6 network either there is something wrong with my understanding, or there is something wrong with my implementation/brain... here is my understanding of what is IPv6 under freebsd. in /etc/rc.conf ipv6_enabled="yes" turns IPv6 o