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Green Black List Creator for Procmail Recipes
Green Black List Creator for Procmail Recipes reads a .aliases file and an orgs file and creates procmail recipes to filter your mail. The README file includes configuration information for procmail to help fight spam.
Secure Cryptographic Instant Messaging
The Project SCIM application allows you to send Encrypted Instant Messages to your friends and other contacts. The software is free for non-commercial users and contains a load of cool features.
FCHECK is a very stable PERL script written to generate and comparatively monitor a UNIX system against its baseline for any file alterations and report them through syslog, console, or any log monitoring interface. Monitoring events can be done in as little as one minute intervals if a system's drive space is small enough, making it very difficult to circumvent. This is a freely-available open-source alternative to 'tripwire' that is time tested, and is easier to configure and use.
Pace Check is a utility that searches through system logs and finds cases where someone has tried to gain access to your server (non-legit), then it saves them to a log, mails them to you, or sends them to stdout. It supports http, ftp, and others.
Netcat is a simple Unix utility which reads and writes data across network connections, using TCP or UDP protocol. It is designed to be a reliable "back-end" tool that can be used directly or easily driven by other programs and scripts. At the same time, it is a feature-rich network debugging and exploration tool, since it can create almost any kind of connection you would need and has several interesting built-in capabilities. Perhaps some equivalent to netcat, or "nc" should have been written and distributed ten years earlier as another one of those cryptic but fundamental Unix tools that we all use daily without even thinking about it.
Distributed DNS Flooder v0.1b Powerful attack against DNS servers.
Squid is a high-performance proxy caching server for web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid supports SSL, extensive access controls, and full request logging. By using the lightweight Internet Cache Protocol, Squid caches can be arranged in a hierarchy or mesh for additional bandwidth savings. Squid consists of a main server program squid, a Domain Name System lookup program dnsserver, some optional programs for rewriting requests and performing authentication, and some management and client tools. When squid starts up, it spawns a configurable number of dns server processes, each of which can perform a single, blocking Domain Name System (DNS) lookup. This reduces the amount of time the cache waits for DNS lookups.
libdnet provides a simplified, portable interface to several low-level networking routines, including network address manipulation, kernel arp(4) cache and route(4) table lookup and manipulation, network firewalling, network interface lookup and manipulation, and raw IP packet and Ethernet frame transmission.
Arpwatch is a tool that monitors ethernet activity and keeps a database of ethernet/ip address pairings. It also reports certain changes via email. Arpwatch uses libpcap, a system-independent interface for user-level packet capture. Before building tcpdump, you must first retrieve and build libpcap, also from LBL, in: ftp://ftp.ee.lbl.gov/libpcap-*.tar.Z.
fsh uses lsh or ssh to establish a secure tunnel to the remote system. This takes as long as a normal connection establishment, but once the tunnel is established, fsh can reuse it to start new sessions on the remote system almost instantaneously. You get the security of ssh and the speed of rsh.
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