troubleshooting Question

Cisco 881 SHDSL Router to Snapgear Firewall

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RoutersHardware FirewallsCisco
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Hi Experts,

I ask for your assistance configuring our Cisco 881 and a Snapgear SG580 Firewall...

This is what we have...

Internet---Cisco881(SHDSL)----Snapgear SG580(Firewall)----LAN

We have the Cisco 881 router NAT'ting to the Firewall, although I want the Firewall to handle NAT.  At the moment, double NAT'ting is going on.

The network config looks something like this...

INTERNET--- WAN IP (59.167.X.X) CISCO 881-- LAN IP (10.10.10.2) ---- Snapgear SG580 (192.168.10.1) --- LAN (192.168.0.0/20)

Can you please suggest how we can configure the CISCO 881 to not NAT, and bind the WAN IP from Interface FE4 to the VLAN 1, then I'll have the Snapgear handle NAT, VPN and the Access Rules...
I'd like to ensure VPN passthrough is enabled too on the 881.
Or feel free to suggest anything else...

I've attached the config of the CISCO 881...

Thank you in advance for your help, much appreciated :)

Cisco 881 Config
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