I have configured may site-to-site VPN's in the past, but the interesting traffic on both sides has all been IP's in the private IP range. A vendor we host software with needs a VPN to my office. The interesting traffic on my side are private IP's (192.168.2.3, 192.168.2.4), but the interesting traffic on their side is a public IP (18.104.22.168). I've never configured a site-to-site VPN where the interesting traffic on one side is a public IP address. Is this configured the same as a VPN where both sides interesting traffic is private addresses? What would the nonat look like with the destination being a public IP? Any assistance would be greatly appreciated. Thanks.