VPN applications

Hi all

I have a query on the example in the link below.

http://www.Cisco.com/en/us/products/HW/vpndevc/ps2030/products_configuration_example09186a00804675ac.shtml

I would like to know about pix 1 Why is there no "access-list sheep extended ip 10.30.30.0 allow 255.255.255.0 10.20.20.0 255.255.255.0" because traffic on the 10.30.30.x/24 subnet must be exempted NAT to access the resources of 10.20.20.x/24.

Using the example above, if my pix1 (hub) is an asa5510 instead of this, and I allow it access remote vpn, vpn clients are configurable to allow access behind pix2 and pix3 networks that have static and dynamic L2L with my asa5510 vpn? Pls advise. Thks in advance.

On PIX1: ACL 100 must include the following (which is the static lan-to-lan to PIX3):

access-list 100 permit ip 10.30.30.0 255.255.255.0

On PIX3: crypto ACL to PIX1 must include the following:

ip 10.30.30.0 access list allow 255.255.255.0

Also on PIX3, you keep adding NAT exemption:

ip 10.30.30.0 access list allow 255.255.255.0

For the dynamic to static LAN-to-LAN (between PIX1 and PIX2), simply configure PIX2:

PIX2, ACL 100 to include the following:

access-list 100 permit ip 10.20.20.0 255.255.255.0

On PIX2, NAT exemption:

ip 10.20.20.0 access list allow 255.255.255.0

Hope that answers your question.

Tags: Cisco Security

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