Re: VPN problems

["Anil Saini" <ansaini567 () hotmail com>]

if the device is nat-t aware nating shouldn't be any problem for ipsec vpn. 
Check with customer support if ZyWALL supports nat-t, window xp native ipsec 
client supports NAT-T .
Anil


> From: Kim Guldberg <kim () bufferzone dk>
> Reply-To: kim () bufferzone dk
> To: Diarmaid McManus <diarmaidmcmanus () gmail com>
> CC: security-basics () securityfocus com
> Subject: Re: VPN problems
> Date: Fri, 08 Jun 2007 23:05:40 +0200
>
> If you are using the IPSec protocol, you need to know that IPSec cannot 
> handle NAT. You are using private IP addresses which will cause problems 
> with IPSec.
>
> Regards
>
> Kim Guldberg
> CPSA, GCFW
>
> Diarmaid McManus skrev:
> > Dear list,
> >
> >    I'm working for a company that recently purchased a ZyWALL 5 for a
> > client. There are problems setting up a VPN, however, o the internal
> > network.
> >
> >    We are attempting to set up the ZyWALL to test the VPNs
> > compatibility with the Windows VPN client inbuilt with XP Pro. We have
> > it set up as follows(apologies if there's a lack of clarity...):
> >
> > --------
> > 192.168.1.5 -> ZyWall WAN port(.1.1) -> ZyWall LAN port(.10.223) ->
> > network -> 192.168.10.222
> > --------
> >
> >    192.168.10.222 is the client we are attempting to connect from, to
> > add .1.5 to the virtual network. I have tried various configuration
> > settings, both on .10.222 and the ZyWALL, but to no avail. I have read
> > and re-read the instructions for adding a VPN and it turns out the
> > same no matter what values I add.
> >
> >    Can anyone, from the sparse information provided, tell me anything
> > I may be doing wrong? With regards to ports etc. Is the Windows VPN
> > client compatible with ZyWALL? Are there any other free clients
> > compatible?
> >
> >    Much thanks in advance,
> > ~Diarmaid McManus

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