DHCP relay over VPN

[surfgatinho]

Hi

Why can't I get my VPN clients to get their IP addresses from my DHCP server.
The DHCP server is in my LAN and the VPN server is in the DMZ. I've enabled DHCP relay on the VPN interface and have no problems connecting to the DHCP server from the VPN box.
Could it be a firewall issue?

Thanks
Chris

 

[Seaspray0]

need to know the following: can a user connect at all with vpn? yes? then you are getting through the firewall. vpn encapsulates the connection to rrass so you can use any protocol you wish inside the vpn, including netboui if you so desire (the netboui is encapsulated inside the vpn's tcp/ip packet). what address is being assigned to a user who connects through vpn? 169.154.x.y for the vpn (note: ipconfig /all and see what the vpn addapter is)? then your dhcp relay is not getting its addresses from dhcp. please submit the results of ipconfig /all results for your vpn for further analysis.

 

[surfgatinho]

Thanks Seaspray'
I seem to have sorted it. I set up the other nic for the LAN and put a static route between them and it is now working

Chris

 

[Racer7619]

We have a VPN too. We have a Cisco 4908 Fiber Catalyst. We were experiencing the same issues. On each of the Interfaces we needed to use the IP Helper-address, this tells each subnet (VPN) where to go to get the address, udp type traffic. Multi-homing was another option but with more than eight subnets, this quickly became impractical, same with a dhcp server on each subnet(s).


Eric