According to Wikipedia (Comodo Internet Security - Wikipedia):
"Comodo Internet Security (CIS) is available in three editions: Complete, Pro and a core free edition. The core edition is free and contains all security features of Pro. The Pro edition adds technical support. The Complete edition complements the feature set with encryption of transmitted data over the Internet connections and online storage for backup."
Which...
Comodo firewall in combo with free AVs
"Comodo Internet Security (CIS) is available in three editions: Complete, Pro and a core free edition. The core edition is free and contains all security features of Pro. The Pro edition adds technical support. The Complete edition complements the feature set with encryption of transmitted data over the Internet connections and online storage for backup."
Which...
Comodo firewall in combo with free AVs