Intego NetBarrier X5

Whether you use your Mac for work or just for surfing the Internet, whether you are online all day long, or just occasionally, whether you are on a local network in a home office, or part of a large corporation or educational institution, your computer contains sensitive information. This may be anything from your credit card numbers to your bank account information, contracts with customers or employees, confidential projects or e-mail messages and passwords. No matter what you have on your Mac that is for your eyes only, there is somebody out there who would certainly find it interesting.
Intego NetBarrier X5 is the Internet security solution for Macintosh computers running Mac OS X. It offers thorough protection against intrusions coming across the Internet or a local network. 

NetBarrier X5 protects your computer from intrusions by constantly filtering all the activity that enters and leaves through the Internet or a network. NetBarrier X5 protects you from thieves, hackers and intruders, and warns you automatically if any suspicious activity occurs. 

NetBarrier X5 has four lines of defense to protect your Mac and your data from intrusions and attacks.
System requirements