VPN what am I missing?

[VortigernWolf]

We are having difficulty's setting up a VPN access to our server across the internet.

Maybe we are doing this wrong or we aren't understanding the picture we are looking at. But although the server is set up for VPN and we can connect to VPN on the internal network we are unable to connect from across the internet.

What have we got or are we doing, wrong.

We have a nat router with one public IP address, the other side of the router is a 10.0.0.* network going to a firewall which is then translating to our 192.168.100.* network.

Internet - router - firewall - network

We can access the public ip address but when we try VPN its not working. Where do we need to be looking.

Any help gratefully recieved.

Vortigern

"Even the Terminator required a reboot!"

 

[ChicagoTechNet]

have you forwarded the ports to the server vpn? quoted from

http://www.chicagotech.net/

Which ports need to be opened for running VPN

A: PPTP VPN uses TCP Port 1723, IP Protocol 47 (GRE); L2TP: UDP Port 1701; IPSec: Pass IP protocol 50 and 51. Note: 47 is a protocol number and not TCP port. The protocol name is GRE. It'll make a big difference when configuring your firewall or router.



Robert Lin, MS-MVP, MCSE & CNE
Windows, Network, Internet, VPN, Routing and How to at

http://www.ChicagoTech.net