Buffalo Technology AirStation WHR-G54S - Manual (Page 33)

NAT
You may disable Network Address
Translation and IPsec passthrough by
unchecking the appropriate Enable boxes.
If you have a DMZ, enter its IP address
in the IP Address of DMZ box. Incoming
packets containing no recognizable
destination port information will be
redirected to the DMZ’s IP address.
Click Apply when done.
To set a NAT table entry manually, click
Edit NAT Table.