My ISP asked me to change my cable modem. I have done that and now internet does not work when going through my ASA5505. When I connect directly to the modem (bypassing the aSA) - internet is okay. Do I have to reconfigure my ASA because of the modem switch? I do not remember or know if the ASA had either the MAC address of the old modem or an IP address that may now be different. Thanks for any tips provided.