| Portknocking Firewall | With this free program you can adjust your computer to open ports just on demand of permitted clients. |
| ZoneAlarm | Get a Firewall to protect your computer. Basic Version is good and for free. Higher versions have to be purchased |
| Jetico | Securitytools for download: encryption, firewall and diskwiping softwaretools. |
| Process Information | Website that describes the processes running on computers |
| Sophos | Software and appliance solutions to protect networks from viruses, Trojans, worms, spyware and spam |
| audit my pc | Free online firewall security and internet speed test |