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Disconnected. Error 721. Remote computer did not respond.

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Disconnected. Error 721. Remote computer did not respond. - 30.Aug.2003 6:19:00 PM   
scriven_j

 

Posts: 8
Joined: 30.Aug.2003
From: London
Status: offline
Hi,

I am trying to get a VPN running between a client machine (Windows XP SP1) and a server machine (Windows 2000 SBS SP4) using ISA.

I keep getting this 721 error though.

The machine seems to connect and states that it is 'verifying username & password' but then it sits their for about a minute and then comes up with the error.

I am able to connect to the ISA machine using Terminal Services (Remote Desktop Connection) without any problems.

I have run the wizard and it has created two IPSec & two PPTP packet filters but I cannot see what else I am missing.

The internet connection for the server is via an ADSL USB modem.

Any advice or suggestions would be much appreciated !

Thanks !

Jon

[ August 30, 2003, 06:26 PM: Message edited by: scriven_j ]
Post #: 1
RE: Disconnected. Error 721. Remote computer did not re... - 31.Aug.2003 7:55:00 PM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi Jon,

Does your ISP allow inbound VPN connections?

Thanks!
Tom

(in reply to scriven_j)
Post #: 2
RE: Disconnected. Error 721. Remote computer did not re... - 1.Sep.2003 10:40:00 AM   
scriven_j

 

Posts: 8
Joined: 30.Aug.2003
From: London
Status: offline
I have worked it out. I was sniffing the wrong lamppost !

The VPN works fine - The place where I was trying to test it was blocking the GRE packets. Once I tried it from home, it worked without a problem.

Thanks !

Jon

(in reply to scriven_j)
Post #: 3
RE: Disconnected. Error 721. Remote computer did not re... - 1.Sep.2003 6:09:00 PM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi Jon,

"sniffing the wrong lamp post" [Big Grin]

Good to hear you got it working and thanks for the follow up!

Tom

(in reply to scriven_j)
Post #: 4

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