1) You need to allow outbound isakmp (udp 500) and nat-T (udp 4500).  Most VPN 
clients,
Cisco or Notel, will use NAT-T which is udp 4500,

2) Anyone who is familar with Remote Access VPN will tell you to use IP Pool.  
Because
I know the US military uses 126.0.0.0/24 and nobody else.  Therefore, I will 
set the NAT pool
to 126.1.1.0/22.  That way, it will conflict with any RFC1918 address space so 
VPN will work
correctly.

HTH

Reinhard Stich <[EMAIL PROTECTED]> wrote:
hi,

first of all: NAT is not a problem for an up-to-date VPN-client. there is a
feature "nat traversal" that makes VPN work. but you will need more ports
than only port 80 - so maybe you can allow port from this guest-dmz.
the next think is that the guest-network should not be the same IP as he
guest's company network. so don't use a 10.x.x.x IP - use a 172.16-32.x.x,
they are not that much in use. but still there is a chance that your guest
will use a 172-ip in his company network - then maybe his VPN-client is
able to deal with that, if not -> bad luck.

hope this helps
reinhard

At 02:02 25.05.2005, you wrote:
>Hi Guys,
>
>I had a design question which I wanted to run by you guys.
>
>I wanted to create a VLAN for visitors and then have the checkpoint be
>the gateway for the DMZ. With the appropriate rules in place, everything
>seems to work for web browsing. Users are on DHCP on this vlan.
>
>What do you do for users who need to connect to their company network
>using IPSEC vpn clients? Everything I've read seems to make this task
>quite difficult.
>
>How have you handled this in your environment?
>
>
>Cameron Kim
>
>
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--
Reinhard Stich ASSIST [EMAIL PROTECTED]
Internet Security AG, 1150 Wien, Johnstrasse 29
Tel: +43 1 3709440 RS784-RIPE Fax: +43 1 3709440-333

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