Security

Spammers would sniff it out fairly quickly, and proceed to hammer it. To get around this, I decided to set up an SSH tunnel from a port on my laptop to port 25 …

How do you know if someone is probing your network? Logs are a great place to start, especially your FW-1 logs. Unfortunately, those logs can be difficult and …

We will use only anonymous ftp and will not allow any non-anonymous user any access. Here we describe the anonymous ftp server setup that allows anonymous …

I am trying to generate a random password in PHP. If you ever have the need to create a random password or username you can use something like this. function …

And possible uses (Biometrics) How it works: THe first bit in the process is recoginising a face a in a photo and seperating it from a background. The program …

Note: this will not keep fbi/police/anyone who knows computers really good from finding your files, only computer illiterate people and people who aren’t really …

This is used in some scripts to check for security. You mustn’t use this as a security check, as it is very easily spoofed. See here for how to secure your Perl …

On most Unix systems passwords are stored in the file /etc/passwd This means using the Unix echo out command, cat, you can see the contents of this file: cat …

About: The way that pretty much all pc’s are hacked is by gathering info, then finding a security bug. By reading this I hope you’ll learn how much info. can be …

Stopping the most common attack: Ok well, one of the easiest ways of getting superuser access is through anonymous ftp access into a webpage. This can easily be …

Key and text Xor encryption uses a key(password) to encrypt text. Ascci All letters/symbols/numbers are represented by a number from 0 to 256. This is called …

Practically all UNIX-based servers run a SSH server to allow remote administration across the Internet. From time to time, you might notice a large number of …