PPTP VPN stops working through Comcast ISP on July 15
It was working fine until July 14 2009 and stops working after that. I use Netgear Cable Modem/Wireless router. There is no configuration on the router about blocking/firewall.
I tried from both Mac and Wix XP at home. No luck. But with the same laptops, I tried to the same VPN server from another location, it works like a charm.
So, the only variable is ISP network and the router. Our IT person checked the router and there is nothing wrong. I called Comcast and they said they have had several calls last week about this problem and they are working on it. Hopefully, they are really working on it. This is really annoying.
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Most likely the advanced settings in the wifi controller have the 802.1 box checked. If so it will not authenticate any other gateway. As well make sure you have unchecked " key is given automatically" in the same page setting. Also make sure your ISP software has not made a temperary VPN when it was installing itself. Most ISP software like Comcast a new installation modem is directed to a VPN until it has verified your username password and account. This is called "captive portal" Sometimes after release from the VPN the setting remains.
use the router's public IP address for PPTP requests, instead of one of the other public IP addresses our ISP assigned us, and simply forward PPTP (TCP 1723 & IP 47) requests to the internal servers. Therefore, the only difference is that I am using a pingable IP address which happens to belong to the router instead of using one of the public IP addresses I have NATed. For whatever reason, this solved our problem with connecting to the RAS server. We no longer have to retry up to 6 times to successfully connect
Did you already forward port 1723? I guess you have done that. To isolate it, try to bypass the router and setup or establish the VPN session there. If it doesn't work, maybe your ISP doesn't allow port 1723 or it's just the modem.
All you need to do is "MAC ADDRESS CLONING". Access the router's setup page and look for MAC Clone settings. Enable that and clone the mac address of your main PC. After that, perform a power cycle. Turn off the router then the modem. Wait for 30 seconds then power on the modem first, wait for all the lights to go solid then power on the router. That should do it.
The "Virtual Server" setting is designed to give the general public access to a network resrouce (web/ftp/media server) on your internal network. If your the VPN concentrator is external to your network (meaning you'll have to use the internet to connect to it), then you won't need to define a virtual server on the DI-624.
You'll just need to enable the IPSEC and PPTP VPN Passthrough which it sounds like you've already done this. I've run into some ISP's that block VPN connections out of their network. If you have the ability, try to directly connect your laptop into your cable/DSL modem in place of your router and see if you can make a VPN connection, if not contact your ISP, if you can then verify you enabled the VPN passthroughs because your router is blocking them.
I'll need to know what router you're using, make and model, for more specific help, but sometimes there is an option for IPSec passthrough. For example, on my Linksys Wireless Router WRT54G, there is a set of buttons under Security/VPN that are entitled IPSec Passthrough, PPTP Passthrough, and L2TP Passthrough. Since I don't know what router you're using, I can't tell you wether or not your router supports such functions or not, but if it does, you need to enable them.
192.168.1.X is a local ip address ,, i trust that thhe vpn is in seperate places and is done with the wan ip over an internet connection?????
OK maybe the problem isnt on your side but the main office building,, when connecting , have someone looked for repeated attemps to connect by observing the fire wall,, if it appears to be blocked byu the firewall simply diasable any and try it out.. If it works then all you need to do is set the firewall correctly..
I was reading the ip address in your original post and those are local address,s are you certin the VPN is correct ???? did you use the correct STATIC IP ADDRESS ASSIGNED BY YOUR ISP??
What model Lucent router is it? If it's an older one (DSLPipe, for example) it won't be able to handle the PPTP connections due to a hardware issue. If that's the case, the best solution would be to request that your ISP (if they supplied it) disable NAT on that router and assign you a block of public IP addresses. That way the router will just directly pass on the traffic to your IP address and VPN would work just fine.
Regarding a phone number, Lucent was merged with Alcatel in April of 2006, so you may need to contact them. Their contact numbers can be found here: