Security

• authd_
  authd_ is an auth daemon for Linux. It operates without using the SUID bit on executables, and it supports the PAM and NSS interfaces, /etc/passwd, /etc/shadow, and MySQL for storing user information...
  
• Directory Watcher
  Directory Watcher was written to aid in the discovery of race conditions. It has multiple speed settings, the fastest of which can even catch a successive link() unlink(). It also has the ability to ...
  
• userv
  It is a tool for system administrators, who often find themselves with a program running as one user which needs to be able to do certain things as another user. ...
  
• video_entropyd
  A program which adds entropy-data to the kernel-random-driver which it fetches from a video4linux-device. ...
  
• ADMsmb
  ADMsmb is a security scanner for Samba based on the source of smbclient. It will get the netbios name, share list, workgroup, domain, and OS. ...
  
• ElyCA
  ElyCA yet another CA written in python which uses MySQL to storage a database of all certicates issued by the CA. ...
  
• Zebedee
  Zebedee is a simple program to establish an encrypted, compressed "tunnel" for TCP/IP or UDP data transfer between two systems. ...
  
• xca
  This application is a graphical user interface to OpenSSL, RSA public keys, certificates, signing requests and revokation lists. ...
  
• GNU Privacy Assistant
  The GNU Privacy Assistant (GPA) is a graphical user interface for the GnuPG (GNU Privacy Guard). ...
  
• Stunnel
  Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons a...
  
• wipe
  Wipe is a file and block device wiping utility. It is based on work by Peter Gutmann. ...
  
• Hackbot
  Hackbot is a host exploration tool, vulnerability scanner, and banner grabber. ...
  
• Medusa DS9
  Medusa DS9 is used to increase Linux's security. It consists of two major parts, Linux kernel changes and the user-space daemon. ...
  
• R.A.T.S.
  RATS, the Rough Auditing Tool for Security, is a security auditing utility for C, C++, Perl, and Python code. RATS scans source code, finding potentially dangerous function calls. ...
  
• sharesecret
  You can split your secret into n parts with a threshold parameter t (2<=t<=n). Then you can distribute the parts to some of your friends (or the vice presidents). ...
  
• Tor
  Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. ...
  
• DNS Flood Detector
  DNS Flood Detector was developed to detect abusive usage levels on high traffic nameservers and to enable quick response in halting (among other things) the use of one's nameserver to facilitate spam...
  
• blaim
  Strong crypto (2048bit diffie-hellman & 448bit blowfish..take that subspace) for gaim. ...
  
• KRad
  The K Rapid Acoustic Dialer is a flexible tonedialer for KDE 2.0. ...
  
• ClairVoyanT SysAdmin
  CVTSA is a suite of tools for GNU/Linux that allows users to administrate computers via web or email wherever they are, using browsers or email clients [via computers or mobiles] and without running ...
  
• ModSecurity
  ModSecurity is an intrusion detection and prevention engine for Web applications. Operating as an Apache module or Java Servlet filter, its purpose is to increase Web application security, protecting...
  
• SystemSearcher
  SystemSearcher is a Linux security scanner written in Perl. It scans single hosts or subnets for anonymous FTP servers, TFTP servers, SMTP servers which allow relaying, SSH servers, Telnet servers, N...
  
• chkrootkit
  chkrootkit is a tool to locally check for signs of a rootkit. It contains a chkrootkit: shell script that checks system binaries for rootkit modification. The following tests are made: aliens, asp, b...
  
• Secheck
  Secheck is a script designed for linux users to keep up with some security issues on their system. ...
  
• aggregate
  Aggregate is a tool for aggregating CIDR networks. Input is read from stdin and output is written to stdout. ...