Question : VPN problem (SBC DSL with Alactel 1000 ADSL Modem)

Hi I'm having a problem getting a VPN setup for a client.

Alcatel 1000 ADSL Modem
Netgear WGT624 Wireless Router

SBC DSL is static IP (configured in the router)

I can ping the Gateway IP address of the Modem but not the IP address assigned to the network.

I forwarded all the necessary ports within the router, to the server they need VPN access to.

I configured the Router for Remote Access so I could make adjustments if neccessary.

Can't connect to the VPN and I can't log into the router remotely.

I spoke with SBC and they of course we're no help, I couldn't get any info on whether perhaps the modem was somehow blocking access.  The person said he didn't think so but couldn't be sure.

I'm thinking its the modem, but I don't have another to test with at the moment, so was just hoping to get some feedback before I go out and buy one.

Answer : VPN problem (SBC DSL with Alactel 1000 ADSL Modem)

You state you are able to ping the gateway address of the modem, but not the IP address assigned to the network.  By "IP address assigned to the network" are you speaking of an actual publicly routeable IP address that is assigned to the WAN side of your router?  Or is it an internal 192. or 10. address assigned to your router from your modem?

http://www.mynetwatchman.com/kb/ADSL/alcmgmt.htm  has information regarding setting your modem to "bridged" mode, rather than using the NAT that is built into that modem.  I would suggest setting the modem to bridged mode, then using the PPPOE connection from your router for you to get the static IP address assigned directly to the router.  Then, as long as your ports are forwarded properly, you should be able to connect to your VPN.

Be sure that the network address at the server end of your VPN is different than your network address at the client end, ie:

Network address at server end = 192.168.0.X  Network address at client end = 192.168.1.X

If both ends have the same network address, traffic will never route out to the remote network.

Good luck!