I am setting up a wireless network between two buildings. I was planning on getting two WRT54G's (with flashed firmware, not sure which one yet) and two antenna's similar to the cantenna and set them both up. Is it possible (with any of the firmware) to set up the wireless connection so the only device that can connect to the wireless network is the other WRT54G? I know you can secure it with WEP/WPA and Mac Address Filtering but I was wondering if there was a option to only allow the WRT54G to talk on the network. Thanks for the help!