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Feedback
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Thank you for taking the time to send feedback to our staff. If you are reporting an error,
please cite the referring URL and the destination URL so we may more efficiently fix the error.
| NOTE | If you are submitting a
utility for inclusion in our Security Tools section, be aware that the tool must be
available free of charge. That means time-limited or crippled "evaluation versions" don't
count. |
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Port Lookup Utility
Find out what service is on what port number. Also lists trojans and their port numbers.

Online Tools |
Network Config Calculator
Set the right mask length & broadcast address every time with this useful online utility.

Online Tools |
Newbie's Guide to Qmail
A streamlined Qmail installer for those seeking a secure MTA with minimal hassle.

Articles & Papers |
Public Key Crypto & PGP
A tutorial covering the basics of public key cryptography and its use in Pretty Good Privacy.

Articles & Papers
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