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Sonicwall Global VPN Timing Out

Posted on 2007-11-20
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Last Modified: 2012-06-27
Hello,
We have a Sonicwall 2040.  VPN is enabled and working.  Created a new backup domain controller and took it to my home to test as a remote backup device.  Can successfully connect thru the VPN network into the office network and start backups.  However, after awhile (maybe about 1 hour) the DC is disconnected.  I have the VPN timeout on the Sonicwall set at 28800 seconds.
The home network is commerical grade DSL (3.0gb/sec).  The DC was direct connected with LAN cable into the DSL modem.  Please advise.  Thanks.
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Question by:rstuemke
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Brugh earned 500 total points
ID: 20319837
When it "broke";
Did the DC "disconnect' or did the VPN disconnect?
Did the Local Area Connection on the DC get a red X like it was dicsonnected?
Were you able to access the internet IMMEDIATELY following the dicsonnect?
How many times has this happened?
Is your VPN tunnel SSL based or are you using the Sonic Wall Global VPN client.  If you are using the client, create a constant PING to the remote server and let it run the entire time you are connected. (common problem with IPSEC clients)
When you say you have "commercial grade" DSL (which is an oxymoron in my book) does that mean you have purchased the Business Class DSL Service with a Static IP block and your service is completely unfiltered. DSL ISPs are notorious for "resetting" connections if too much data is passed trough to the same IP, they call it a security filter.

I supsoet DSL is going to be the issue as it always is.
I would check your Public IP address before you establish the connection.  Then when it breaks, check it again, is the number the same?  

HTH
 - Brugh


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LVL 9

Expert Comment

by:Brugh
ID: 20319848
Also, get yourself a router at your house. Set it up and connect 1 PC and the DC to it.  Run a constant ping to google.com on your PC.  Then establish the VPN from the DC and start the backup.  If it fails, do the pings fail on the PC at the same time?

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Author Comment

by:rstuemke
ID: 20320080
Commercial grade was the name they gave me when I upgraded from 1.5gbs to 3.0gbs

Will have to try again tonight to get some of the information.

Internet access was still available, since the LAN cable was still connected and had a 192.168.1.x IP address.

problem has happen twice, when I was copying files from production server in office to local DC behind DSL.  Using a program called ViceVersaPro, which can limit bandwidth,,,,may try that....

How do you set up a constant ping?
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Author Comment

by:rstuemke
ID: 20320094
Also, using the Sonicwall VPN client.
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Author Comment

by:rstuemke
ID: 20320105
Also, was able to reconnect VPN immediately....
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Author Comment

by:rstuemke
ID: 20330078
the constant ping fixed the problem.  thanks.
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LVL 9

Expert Comment

by:Brugh
ID: 20332215
Woot Nice.  Good stuff. Glad I could help.

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