Sunbelt Kerio Personal Firewall was a computer protection software that offered security and privacy to its users. It was free to download for 30 days and offered a full trial of its full version. One of its main features was its two-way firewall, which kept hackers away and ensured the security of its users' private information. In addition, it also made the PC invisible online.

One of its strengths was its ease of use. Once downloaded and installed, the software started protecting the computer automatically. However, it also offered more advanced options for more technical users, who could adjust the system settings to their liking. This made the software flexible and adaptable to each user's preferences.

Sunbelt Kerio Personal Firewall had two versions: a free version and a paid version. After 30 days, the free version stopped some of its advanced privacy protection features but continued to work with reduced functionality for free.

Regarding network security, both versions included packet filtering and file integrity checking. The paid version also had application communication control, launch control, network intrusion prevention system, and host-based intrusion prevention system. In contrast, the free version did not include either of the latter two aspects.

As for content filtering, the paid version included identity theft protection, script blocking (JavaScript, VB script), referrer and cookie blocking, ad blocking, and pop-up blocking. These features were not available in the free version.

As for statistics and logging, both versions included statistics on attacks and blocked ads and an automatic update checker. The paid version included extended logging and syslog, while the free version did not. The paid version could also be used as an Internet gateway, while the free version did not.

In terms of administration, the paid version included remote administration and password protection of the configuration, while the free version did not include any of these features.

In conclusion, while the free version of Sunbelt Kerio Personal Firewall offered a good level of protection, the paid version offered higher security and additional functionality. If you were looking for more protection and were willing to pay for it, then the paid version might have been the better option.

The software was highly rated by its users and by the trade press. It was chosen as the best personal firewall in a PC Magazine comparison and got a 5-cow rating in Tucows. In addition, it was considered the best budget buy by Computer Shopper in 2006 and won Windows IT Pro's Readers' Choice Award as the best desktop firewall.

One of the most remarkable aspects of the Sunbelt Kerio Personal Firewall was its price. It was one of the cheapest firewalls compared to the competition, which showed that affordability did not have to compromise on quality. This made it a desirable option for users looking for an affordable security solution.

Unfortunately, Sunbelt Kerio Personal Firewall is no longer available, as it was discontinued from support on May 23, 2011. Although it is still available for download, it is not being updated or further developed.