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Any way to VPN past hotel's router?

C

Chris2wire

Senior member
I need to VPN to my work network... VPN always works at home and other places, so its not my computer... I know my school blocks VPN ports like 1723, and now this hotel seems to be (dont have a program to check though, but its obvious)

Is there any way to get the hell out of a hotel router and finish the (windows-based) VPN attempt?
 
"Telnet myschool.com 1723" at the DOS command prompt will tell you if TCP Port 1723 is being blocked. If you get a response (other than "connection timed out"), then it's not 1723. Too see what a "good" Telnet response should look like, try "Telnet google.com 80".

More likely they haven't enabled GRE (Protocol 47) passthrough in their router. You can tell by the error message that the Windows VPN client returns. Error 800 probably means a firewall block of Port 1723. Error 721 means a GRE passthrough problem.

Usually GRE is a problem with INBOUND connections. But if they haven't enabled outbound passthrough, then there's not much you can do about it. PPTP cannot use anything other than TCP Port 1723. Did you ask the hotel what's up?
 
No, I didnt ask. But thanks for your help.

Its a error 800, by the way. There is probably no way by it, since I cant expect a hotel to open up a port for me 🙂

I'll try what you said when I get a chance....

So if I'm within the hotel and I tryto telnet anywhere on 1723, and it doesnt work, does that mean the outgoing hotel is blocking it or the place im trying to connect to is blocking it?

I know my work isnt blocking it, im just curious about that question
 
Originally posted by: Chris2wire
So if I'm within the hotel and I tryto telnet anywhere on 1723, and it doesnt work, does that mean the outgoing hotel is blocking it or the place im trying to connect to is blocking it?
Click to expand...
Could be at either end.
 
Originally posted by: Chris2wire
So if I'm within the hotel and I tryto telnet anywhere on 1723, and it doesnt work, does that mean the outgoing hotel is blocking it or the place im trying to connect to is blocking it?
Click to expand...
You should telnet directly to your work's vpn server to test port 1723. Otherwise it's possible that your packets get through but there simply isn't anything to connect to on the remote machine.
 
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