Problem with Comcast Cable modem and VPN

I have used a company provide Comcast cable modem and a Belkin router (
model F5D5231-4 ) for tele-commuting for the last 3-4 years. Recently,
the VPN has stopped working if I am connected to the cable modem
through the router. The ONLY way I can get through to my company
network is by connecting my computer directly to the cable modem. If I
have the router between the cable modem and my laptop, I can get on to
the internet, but the VPN does not work.

Comcast says as long as I can get on to the internet, they can not help
me resolve this. My company says as long as VPN works directly through
the cable modem, they are not 'required to' solve my issue.
Meanwhile I can only have one computer connected to the internet at a
time and the VOIP phone is dead while I am telecommuting.

Can some one please help? The desk side support folks have already made
sure my VPN client is uptodate.

Any help would be greatly appreciated

TIA

Medha

.

Relevant Pages

  • Re: Linksys Router and VPN
    ... it tells you that if your VPN ... StinkSys Router A: ... Perhaps Windows has mapped this address to the localhost ... > up directly to the cable modem. ...
    (comp.security.firewalls)
  • Linksys Router and VPN
    ... The router documentation just tell you to make sure the IPsec and PPTP ... it tells you that if your VPN ... Perhaps Windows has mapped this address to the localhost ... Is the cable modem doing some kind of reverse authentication? ...
    (comp.security.firewalls)
  • Re: Linksys Router and VPN
    ... > The router documentation just tell you to make sure the IPsec and PPTP ... it tells you that if your VPN ... 169.anything then it didn't work and you should power cycle the Linksys ... The cable modem, with only 1 IP, will sync to the first MAC address it ...
    (comp.security.firewalls)
  • Re: VPN help help
    ... If your talking about PPTP VPN do you have TCP Port 1723 forwarded to the private LAN IP of the ... desktop and GRE Protocol 47 traffic enabled on the cable broadband router? ... > have dialup and cable modem. ...
    (microsoft.public.windowsxp.network_web)
  • Re: VPN/Terminal Services
    ... If I connect a PC directly to the comcast cable modem, ... It's not until I throw a router into the mix that the problem starts. ... > Does the VPN work at all when you VPN into the SBS box from the comcast ... I brought the router back to the problem site thinking that maybe I ...
    (microsoft.public.backoffice.smallbiz2000)