I'm trying to setup a Site-to-site tunnel between a ASA and Checkpoing NGX R62. Their internal host's IP overlaps with our internal IP range. Unfortunately they're not offering to NAT on their side. Is it possible on the ASA to setup a NAT so that my internal hosts get nated to the outside ip of the ASA.
172.16.0.0 <---> ASA <-- Internet --> NGX R62 <-- 172.16.0.0