Norton is Bad!
What do you mean by antihacking? Do you want to protect your computers from internet threats? Do you want to protect the wireless traffic and eliminate the risk of a wardriver getting in? Are you just worried about malware and hijacking of computers or do you actually have some important information to protect?
Against internet stuff your usual firewall+antivirus+antispyware will do. As for securing wireless, there is no "secure" secure way. You can set up encryption but it will be no good against a determined attacker. Going wired or setting up some VPN technology on top of the LAN would be the only safe solution.
And Norton is bad!
