Penetration test to your Network

The best method to secure your network is to use the same methods as Evil Blackhat hackers would use. System auditors can check for your security holes and provide useful links related to their fix. I would highly recommend you a periodical check to your system with a penetration tester available on the net. Many of them are not free, but... there is a price for your data integrity and privacy.

Computer Security companies are very efficient but... not so affordable! Depending on the risk you have with your network, as a BOPH (for those who don't know.. Bastard Operator From Hell, a zero tolerance system admin) you can make some check routines.

You can check these fine auditor backtrack.