Prisma Firewall is a basic firewall that monitors your Internet and network connections and grants or denies access based on user defined rules. It offers a learning mode that will prompt you whenever an application is trying to use your Internet connection, and you can choose to temporarily or always allow the program to connect. This feature however comes with a major flaw. Unlike almost any application firewall today, Prisma Firewall does not generate fingerprints of the applications that it grants access, and therefore simple renaming or replacing operation can fool the firewall and easily penetrate the protection. In addition to application based blocking, the firewall also supports packet filtering which can be manually configured with standard rules based on IP, port and protocol, and you can easily allow or block IP addresses from the Intruder and activity logs.

Stats
* Displays information about current opened connections (tcp/udp) and historical data about your network traffic. Also, you are able to close connections (only for tcp) or kill process (only if you have the proper rights).

Intruders
* You can monitor all the machines that send/receive packets to/from you.
Filters
* You can set the access of machines that try to connect your computer by creating a rule for that specific IP. You can also create filters for IP classes, ranges and/or port ranges.

History
* Allows you to monitor the activity of applications by displaying different information about connections.
Applications
* Prisma let you manage each application internet access. You can manually Add/Edit/Remove a rule. Also, a dialog will pop-up each time an application, that is not present in your rule list, will try to access the internet.

Requirements:
* Pentium III 800Mhz;
* 8 Mb free memory;
* 3 Mb free disk space for the actual Prisma application. More free space will be needed for log files;
* 16bit 800x600 resolution is required, although the Prisma GUI looks much better under 32bit 800x600 mode;
* All available Windows Service Packs and Hot fixes should be installed prior to installing Prisma application.
Limitations:
* 27 days evaluation period

The license of this software is Free Trial Software, the price is $29.50, you can free download and get a free trial.