7.9. ( MASQ and various networks ) - Can I use a cable modem (both bi-directional and with modem returns), DSL, satellite link, etc. to connect to the Internet and use IP Masquerade?

Yes , as long as Linux supports that network interface, it should work. If you receive a dynamic IP address, please see the URL under the "Does IP Masquerade work with dynamically assigned IP" FAQ item above.