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How do I restart  a Cisco VPN client automatically under Linux?

Posted on 2010-09-09
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Last Modified: 2012-06-27
I have a cisco vpn client on a Cent OS 4.4 and want to make sure it comes back up automatically in case the connection goes down on the other side of the VPN tunnel.

I tried to add a cron job like:
* * * * * vpnclient connect MyConnection

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This didn't work.

I see a couple of processes related to the vpn client:
root     13299  0.0  0.0  2672 1136 pts/4    S+   23:34   0:00 vpnclient
root     13300  0.0  0.0  3744  916 ?        Ss   23:34   0:00 cvpnd
nobody   13301  0.0  0.0  4008 1708 ?        S    23:34   0:00 cvpnd

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How can I turn the vpnclient into a daemon? I think this might be the solution but I'm not sure.
Thank you!
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Question by:el930692
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by:
expert1010 earned 125 total points
ID: 33644603
I don't know vpnclient from Cisco but normaly other clients do have reconnect as a configuration option. I did some googling and found this.

http://www.networkworld.com/community/node/42121

If it's the same thing with the Linux client as the windows client you would just put a few extra lines in the configuration file.

Example from the link above.

AutoInitiationEnable=1
AutoInitiationRetryInterval=2
AutoInitiationList=MY-CORP-NET
[MY-CORP-NET]
Network=192.168.10.0
Mask=255.255.255.0
ConnectionEntry=CORP-VPN1
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LVL 3

Assisted Solution

by:berniep
berniep earned 125 total points
ID: 33644933
regarding your cron sample that you say didn't work, does that command work from a shell to bring it up?
does the cron entry produce an error? try redirecting the output to a log file:
* * * * * vpnclient connect MyConnection >/tmp/vpnclient.out 2>&1
maybe the vpnclient binary is not found in the path in cron - try putting the absolute path there
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Author Comment

by:el930692
ID: 33646280
The "vpnclient connect MyConnection" is the command I use when I turn on the VPN connection the regular way through the shell. I'll add it to a log file as you suggested.
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Author Comment

by:el930692
ID: 33646447
Thank you expert1010.

I already have your solution implemented. It's just not very clear to me what happens if the connection goes down. Is it trying to reconnect as a service in the background or on the shell since that's how I currently initiate the connection?

How would I test it to see is this setting does it it supposed to do?

That's why I wanted to implement my cron job since I know how a little more how that supposed to behave.
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Author Closing Comment

by:el930692
ID: 33646729
I found out that I need something like this in the cron job:
*/5 * * * * /etc/init.d/vpnclient_init start

I set AutoInitiationRetryInterval=2 in the .ini file and as a backup the cron jon above.

So if the VPN client will try to bring the connection back up every two minutes and just to make sure the cron job it will try to bring the connection up every 5 minutes.
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