Question

Add internal NAT for VPN clients

Asked by: hullc65203

I've got a PIX 515e serving 192.168.x.x numbers to my users that connect via VPN. I need to add some sort of NAT that will change the incoming 192.168.x.x number to an internal 10.x.x.x number.

Can someone help me set this up?

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Asked On
2008-06-03 at 10:25:52ID23453937
Tags

Cisco

,

PIX 515e

Topic

Cisco PIX Firewall

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: MelaleucaPosted on 2008-06-03 at 15:31:35ID: 21705191

Why are you having the Pix server 192.168.x.x address? There are a couple ways you can do this, you can either add the 192.168.x.x route internal so your internal device know how to get to that range or you could change to a 10 address and add a route to the pix on the inside. I don't know of any way to do the nat rule because the crypto doesn't terminate on a physical link so i don' t know if nat would work, but i could be wrong.

 

by: hullc65203Posted on 2008-06-04 at 08:52:33ID: 21711332

I'm using 192.x.x.x just because that's what it defaulted to. If I change the pool to serve 10.x.x.x numbers, would I add them as an internal subnet?

For example: I've got:
10.71.1.x
10.71.2.x
10.71.3.x
10.71.4.x
10.71.5.x
already assiged out to branches.

Would I serve a range in 10.71.3.x or would I create a new subnet 10.71.6.x?

 

by: MelaleucaPosted on 2008-06-04 at 08:56:41ID: 21711367

I would server 10.71.6.x range, then make sure you add a route internal that that range is pointed to your pix. or you could just make sure the range that you are currently handing out has a route that your internal computers can get to.

20120131-EE-VQP-002

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