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.