MIMEDefang is a flexible MIME email scanner designed to protect Windows clients from viruses. Includes the ability to do many other kinds of mail processing, such as replacing parts of messages with URLs. It can alter or delete various parts of a MIME message according to a very flexible configuration file. It can also bounce messages with unacceptable attachments. MIMEDefang works with Sendmail 8.11/8.12's new "Milter" API, which makes it more flexible and efficient than procmail-based approaches.
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Source code for a worm that spreads using Zboard PHP vulnerabilities. Known as the ZeroBoard worm, it infects Linux, FreeBSD, and Sun.
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Arping is an arp level ping utility which broadcasts a who-has ARP packet on the network and prints answers. Very useful when you are trying to pick an unused IP for a net that you don't yet have routing to, or to ping an ethernet address directly. Tested on Linux, {Free,Net,Open}BSD, MacOS X, and Solaris.
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