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psad-0.9.0.tar.gz

psad-0.9.0.tar.gz
Posted Aug 4, 2001
Site cipherdyne.com

Port Scan Attack Detector (psad) is a perl program that is designed to work with Linux firewalling code (iptables in the 2.4.x kernels, and ipchains in the 2.2.x kernels) to detect port scans. It features a set of highly configurable danger thresholds (with sensible defaults provided), verbose alert messages that include the source, destination, scanned port range, begin and end times, TCP flags and corresponding nmap options (Linux 2.4.x kernels only), email alerting, and automatic blocking of offending IP addresses via dynamic configuration of ipchains/iptables firewall rulesets. In addition, for the 2.4.x kernels psad incorporates many of the TCP signatures included in Snort to detect highly suspect scans for various backdoor programs (e.g. EvilFTP, GirlFriend, SubSeven), DDoS tools (mstream, shaft), and advanced port scans (syn, fin, Xmas) which are easily leveraged against a machine via nmap.

Changes: Support has been added for UDP scan detection along with a few UDP scan signatures, a new verbose mode is included in install.pl, improved check_flags() for better TCP flag recognition (nmap NULL scans are supported), and a fix for psadwatchd not parsing ps output correctly.
tags | kernel, perl, tcp
systems | linux
SHA-256 | 2f7e9560ac335e6c47ef89a251f91e52277345d0d07943009c5784111dd63444
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