VPN - can connect from work to home but not vice versa

  • Thread starter Thread starter Evan
  • Start date Start date
E

Evan

I have managed to stumble my way through establishing a vpn connection from
my work computer to home. I can see shares and everything (wow!). If I try
to connect from home to work it gets stuck on verifying password. Both
machines are on dsl. I have tried to duplicate the settings in both
locations. Does anything jump out that could cause this behavior? I don't
know enough about the authentication process to understand why it would work
one way and not the other. Any ideas?
 
What is the error you see the eventviewer of the work computer when you try
to dial from home?
Are the credentials you give from home valid on the work computer?

Send across any error logs you see.

Thanks,
Manjari.

This posting is provided "AS IS" with no warranties, and confers no rights.
 
I dont see anything relating in the event viewer. I am accessing vis dsl,
not dial up. By credentials do you mean the security and sharing settings
for the user?
 
It sounds like your office firewall is blocking PPTP
Passthrough/GRE.... Check your firewall/router for this setting.

Jeffrey Randow (Windows Net. & Smart Display MVP)
(e-mail address removed)

Please post all responses to the newsgroups for the benefit
of all USENET users. Messages sent via email may or may not
be answered depending on time availability....

Remote Networking Technology Support Site -
http://www.remotenetworktechnology.com
Windows XP Expert Zone - http://www.microsoft.com/windowsxp/expertzone
 
I agree with Jeffrey - IP Protocol 47 (GRE) is probably blocked at your work
router/firewall.

--

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.
 
I am using the same hardware at home and at work. they are both set to
forward 1723 to the private ip of the proper machine. There is no setting
for passthrough, for GRE, for protocol 47, etc available. I *assumed* that
the router does not block GRE when using the pptp becuase it works from work
to home. Again, it is the same router with the same firmware in both
locations - a MS base station. I cannot find any evidence in the router log
of anything being blocked.

Thanks for the help thus far!
 
That's weird... If you are referring to the MN-500 or MN-100, I know
it supports PPTP/IPSEC passthrough by default.. I'm not sure about
the MN-700 as I only use mine as a G-access point (until the loopback
bug is fixed), so I am not sure...

One thing I would try is to reapply the latest firmware to the router
at the office (or reset it and reconfigure it)....

Jeffrey Randow (Windows Net. & Smart Display MVP)
(e-mail address removed)

Please post all responses to the newsgroups for the benefit
of all USENET users. Messages sent via email may or may not
be answered depending on time availability....

Remote Networking Technology Support Site -
http://www.remotenetworktechnology.com
Windows XP Expert Zone - http://www.microsoft.com/windowsxp/expertzone
 
Actually, reading your post reminded me that one is the MN100 and one is the
MN500. They do both have the firmware updates but I will try your
suggestion. One question, is GRE a two way thing? Or is it only incoming or
outgoing?
 
It acts both ways... Almost all routers support it when you make
remote VPN requests... Some routers, however, need to have this
Passthrough enabled when acting as a VPN server...

Jeffrey Randow (Windows Net. & Smart Display MVP)
(e-mail address removed)

Please post all responses to the newsgroups for the benefit
of all USENET users. Messages sent via email may or may not
be answered depending on time availability....

Remote Networking Technology Support Site -
http://www.remotenetworktechnology.com
Windows XP Expert Zone - http://www.microsoft.com/windowsxp/expertzone
 
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