Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations bkrike on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

VPN Problems (PPTP), DHCP?, HELP!!!

Status
Not open for further replies.

tsap

IS-IT--Management
Apr 19, 2005
69
CA
I really don’t know what category to put this in, since I don’t know where the problem is exactly. Ok this is the full story…

Are current ISP gives us an static fake ip address that’s re-directed to an static real address (for what ever reason). So for example my fake static ip for an external address on my wg2500 box is 10.251.2.X (fake static). But if you want to connect from outside the network via VPN you connect with 129.132.X.X (real static) address.

The SOHO WG2500 box is plugged into are windows 2000 server computer (192.168.111.100) and does the DHCP for the local network and for the remote access users(VPN). So the DHCP scope looks at the SOHO WG2500 box’s IP which is 192.168.111.1, then the DHCP address assigned are 192.168.111.33 to 192.168.111.88, then the DHCP servers are 192.168.111.100 and 192.168.111.101 (other server).

So my problem is the new ISP has no funny fake static ip’s or anything. It’s a plan jane no restriction real static ip. So when I unplug the current ISP and plug in are new ISP is just changed the external address info on the SOHO box to new information. Once I did that the internet works great. So really, the only thing I need to change is the IP address that my remote user login with. So I changed the IP for the clients to the new static IP. Once I did that, I could not connect to the server. It never said denied access or anything. It just was not there. But on the client computers I can ping the external address fine.

Once I had that problem, I plugged my old ISP box back in the SOHO and everything started to work fine. I just can’t find the problem stopping me from fixing this for my new ISP. One thing I should mention, the old did setup the windows 2000 server’s. So I guess it is possible they have hidden settings some where. But I can’t find them!!!!



Any Idea’s would really help.
 
I looked around a little..., i'll look some more.

I did rebuild the RRAS, and that did nothing.
 
Well problem fixed!!

Turns out a firewall box on my network was giving out bad DNS addresses. Once I changed out that box, everything works fine with the new ISP.

Man..., thank god this nightmare is over.


Thanks for all the help guys.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top