I just upgraded to a cable modem at home. Is it necessary to set up a firewall under linux to protect my computer and if so is there a firewall packaged for debian?
Suggest Bastille. apt-get install bastilleThen as root from a terminal run InteractiveBastille typed as one word with the exact capitalization. A script will run that asks questions about how you want to set up iptables and also harden your system.