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Comcast VPN via PPTP Connection

Hello, I have a client and we had VPN working perfectly until Comcast changed our Comcast modem to a new and improved unit.  Now our VPN connections do not work, in fact I cannot ping or connect to our router (static ip address from comcast).  I can however, ping the comcast gateway ip address.

Any thoughts of what I need to configure on the comcast modem to make this work?
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tucktech
Asked:
tucktech
2 Solutions
 
rharland2009Commented:
Sounds like Comcast had the static IP tied to the MAC of the old modem. Can you verify with them or the client what the IP that is handed to your router should be today?
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Dave BaldwinFixer of ProblemsCommented:
Do you have a residential or business account?  Residential accounts are very restricted.
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tucktechAuthor Commented:
business account
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Rob WilliamsCommented:
Might they have replaced the modem with a combined modem router unit?  This is common.  If so the new unit is likely preforming NAT and your existing router now has a private IP rather than public.  To change the combined units to effectively be a basic modem you need to put them in Bridge mode.
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tucktechAuthor Commented:
After about 3 hours of phone calls and a lot of frustration they did put in a new modem that has the wifi and from Comcast they cannot provide pass through with this type of unit. Comcast is replacing the unit today.  I will advise if I still have problems.
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Rob WilliamsCommented:
Sounds good.   All the WiFi units are combined modem/router, though some you can put in bridge more which also disables WiFi and DHCP.
Let us know how you make out.
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tucktechAuthor Commented:
We had the modem changed to one without wifi and we put the modem in pass through modem, it works....
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Rob WilliamsCommented:
Glad to hear.  Thanks for updating.
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tucktechAuthor Commented:
As noted above Comcast gave us a piece of equipment that does not support our needs.
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