Steal This Computer Book 3: What They Wont Tell You about the Internet

These programs can help you block or monitor the ports on your computer to determine if a malicious hacker is trying to access or probe your computer.

Windows

• Anti-Hack Monitors your open ports to detect unauthorized access attempts. Shareware. (http://www.carbosoft.com/anti-hack.htm)

• AntiSniff Detects port sniffing on a network. Freeware. (http://www.atstake.com/)

• Attacker Monitors your ports for suspicious behavior and notifies you when someone tries to connect to your computer through a Trojan. Freeware. (http://www.keir.net/)

• BlackICE Defender Intrusion detection and a personal firewall. Demoware. (http://www.networkice.com/)

• Jammer Monitors ports on your computer to detect attempted break-ins. Shareware. (http://www.agnitum.com/jammer)

• McAfee Personal Firewall Secures your computer from hackers. Trialware. (http://www.mcafee.com)

• Netmon Monitors your ports for suspicious behavior and detects the more common Trojan horses. Freeware. (http://members.tripod.com/circlet)

• NukeNabber Monitors your computer ports to alert you when someone may be trying to access your computer using a Trojan horse. Freeware. (http://www.dynamsol.com/)

• Port Blocker Blocks open ports on your computer to prevent them from being used by hackers or Trojan horses. Freeware. (No installation support.)

• ProtectX Monitors your ports to detect and remove any Trojan horses that could be used to access your computer. Shareware. (http://www.archimedean.com/)

• Rainbow Diamond Intrusion Detection Detects suspicious activity through your ports. Demoware. (http://www.brd.ie/)

• SuperScan Port scanner that probes your computer to detect any open ports that could be vulnerable to a remote attack, such as through a Trojan horse. Freeware. (http://www.keir.net/)

• ZoneAlarm Firewall that protects your computer from port scanners and remote access Trojans. Freeware. (http://www.zonelabs.com/)

Macintosh

• TrashScan Monitors the ports on your Macintosh to make sure an intruder isn't secretly accessing your computer over a network or the Internet. Freeware. (http://trashscan.hypermart.net)