WriteSettings Error with plug-in servermgr_vpn

Question

Greetings,
Just installed OS X Server for the first time. Decided to go with local network with VPN capability. I'm getting the following error;
"The error occurred while processing a command of type 'writeSettings' in plug-in 'servermgr_vpn'.
I'm not sure how to correct the issue or work around it.
My goal is to have a home private LAN with VPN access from external.
Additionally, I do have a VPN subscription service, which is added to my Networks Preferences when I'd like to go to private network. I'm not sure if this is required to make the VPN component on OS X Server work, but thought I'd add it in case it was.
Help is greatly appreciated.
v/r
Roy Arellano

Answer 1

Hi Roy,
If your rotuer is serving as your DHCP server rather than your Mountain Lion Server, then the pool you define should be a subset of the IP addresses that are doled out by your router. For instance if the LAN addressing scheme is as follows:
Router: 192.168.1.1
DHCP Address Range: 192.168.1.10 - 192.168.1.255
Mac OS X Server 192.168.1.2
VPN Pool beginning IP Address: 192.168.1.4, with 6 consecutive IP addresses reserved for PPTP and L2TP VPN (through 192.168.1.10)
Just remember that your remote location, that where you are establishing the remote secure tunnel from, must be on a different subnet. In other words 192.168.1.x will not work. However. 10.0.1.x, etc. will work. If the router will allow I often configure it with a non-standard IP address pool such as 10.0.2.x as home LAN's, Public wi-fi hot spots, etc. will often use the more common 192.168.1.x address scheme.
-H.