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VPN Client Network Mask

Posted on 2004-08-14
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Last Modified: 2013-11-16
I have a Cisco VPN Concentrator 3000 series. I use Cisco VPN clients v4.x to connect. I am using a configured pool of addresses to dole out to the clients when they connect. I want the clients to get a specific mask as well but I am missing something.

I have defined a mask in the group configuration but my clients still get a mask based on the class of my IP pool.

How can I define a subnet mask for my VPN clients?
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Question by:mousers
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by:lrmoore
ID: 11802878
What version OS do you have on the 3000? I just upgraded one to 4.1.5 this morning and noticed that there is now a subnet mask setting for the address pool..
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by:mousers
ID: 11803979
I have v4.0.1D. I'll try to grab the IOS and try to perform the upgrade tonight. Any gotchas you came accross?
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by:lrmoore
ID: 11809928
If you're using OSPF routing, I've found a glitch in the reverse rout injection.
Otherwise, it took all of 5 minutes.
Do you have any LAN-LAN tunnels set up, specifically to an IOS router? You might have to modify the router's config to add an isakmp keepalive. I found that out going from 4.0 to 4.1 a while back..
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by:mousers
ID: 11810114
I have 4 LAN-LAN tunnels. I am trying to get the new IOS from Cisco TAC right now.
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LVL 79

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by:lrmoore
ID: 11810407
If your LAN-LAN tunnel terminates on a router, then you will need to add this command to the router.
isakmp keepalive 30

Else, the VPN will come up for a couple minutes then drop.

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Author Comment

by:mousers
ID: 11811080
The remote end of the tunnel is a PIX 506e. I do seem to have problems with VPN clients having their connection dropped but the LAN-LAN tunnels seem ok.
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Accepted Solution

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lrmoore earned 250 total points
ID: 11811411
What version clients? I think there is a caveat that only 3.6+ is supported.
Highly suggest clients use 4.x
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Author Comment

by:mousers
ID: 11813893
Thanks for the help. I have some remote offices who are in the middle of a big project so I'm not going to be able to do the upgrade till Thursday evening. I do have a work around for my delima until then.

Thanks again.
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