Question

How to configure default gateway for ASA5520 VPN Clients

Asked by: prognosis12

Dear Experts,

I've recently aquired an Cisco ASA to use as our new corprate firewall, I've had previous experience with using routers as the VPN termination, so the ASA is quite new to me.

I've got the VPN all setup and you can establish a connection with anyconnect, but I'm having a problem where the ASA seems to decide what default gateway that it is assigning to the VPN clients. I've got the ASA configured to dish out IPs in the range

10.121.1.2 - 10.121.1.50 all /16

The default gateway for the network 10.121.1.0 is 10.121.1.1, but the IP address for the deafult gateway that the ASA gives out from it's own DHCP is 10.121.0.1, which I suppose makes sense since it's a /16 network, but obviously it stops the VPN traffic from actually going anywhere.

So, how do I configure this default gateway for the DHCP pool that the VPN is using?

I've done some searching, and playing around with ASDM, but I'm just running out of time.

Thanks,

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Asked On
2009-09-15 at 21:58:16ID24735277
Tags

Cisco

,

ASA

,

VPN

Topics

Virtual Private Networking (VPN)

,

Networking Hardware Firewalls

Participating Experts
2
Points
500
Comments
7

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Answers

 

by: ikalmarPosted on 2009-09-15 at 22:17:04ID: 25342084

HI,

do you want to change the IP pol of VPN client, please refer this page:
http://www.petenetlive.com/Tech/Firewalls/Cisco/stunnel.htm

 

by: travis87Posted on 2009-09-15 at 22:26:25ID: 25342124

Looks like you VPN needs to be handing out addresses from the 10.121.1.0 pool not the 10.121.0.0 pool.  At least that is teh quick fix.  If the pool is full I see your reasoning for a different pool.  

It looks like you are already assigning from the 10.121.1.0 pool, so look at the split tunneling portions of this howto from Cisco: http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a008060f25c.shtml#maintask1

Make sure that the users have access to the 10.121.1.0 pool in the split tunneling.  This should allow them to gatway to both nets.

Let me know.

 

by: prognosis12Posted on 2009-09-16 at 00:25:26ID: 25342803

Hi Guys,

Thanks for the feedback.

I know I could just use the 10.121.0.0 subnet, but I'm configuring this on an existing network that has routes back to 10.121.1.0 from routers at our other sites, so I'd prefer to keep using the 10.121.1.0 subnet and 10.121.1.1 as the DG.

Any way to do that?

Thanks

 

by: ikalmarPosted on 2009-09-16 at 01:27:38ID: 25343168

you able to do that, but in this case the split tunnel isn't working...

 

by: prognosis12Posted on 2009-09-16 at 18:05:16ID: 25351987

Hi Ikalmar,

OK if I'm able to do that, could you please provide a link or some instructions?

Thanks.

 

by: prognosis12Posted on 2009-09-16 at 18:15:13ID: 25352043

OK, I've checked my exisint router setup and when I'm connected I don't get a DG either, it must be the split tunnelling setup as suggested....I"ll do some more digging...

 

by: ikalmarPosted on 2009-09-16 at 23:03:08ID: 25353175

HI,

I sent you the link on  ID: 25342084 it seen you not read it:(

20120131-EE-VQP-002

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