Top Tools for Network Security
The importance of online security can never be repeated enough, with threats coming from viruses and phishing attempts in emails, aggressively coded website scripts, “floating threats" looking for open PCs to compromise and various malware and spyware that can ruin both your PC and your privacy.
However if you’re running a corporate network, what you will be looking for are network security tools that detect intrusions and unusual behaviours, as well as utilities that can detect problems.
While you’re unlikely to find any antivirus, firewall or anti-malware tools that are available for free to corporations, there are various free computer network security utilities that can be used to keep your network as clean as a whistle.
Note that unless stated otherwise, these tools are all open source and require a Linux system for installation and operation. They will work seamlessly with a Windows network, however.