Lynis is an auditing tool for Unix (specialists). It scans the system and available software, to detect security issues. Beside security related information it will also scan for general system information, installed packages and configuration mistakes.
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By default ubuntu 12.04 comes with guest account.You can disable this account using the following procedure.Guest account is a paswordless account which allow users to get access to Ubuntu machine
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Many Ubuntu users and Administrators struggle with Active Directory integration. One approach that folks are using is the free offerings from Centrify Express.
Through the DirectManage Express or DirectControl Express downloads you can quickly and easily join a Ubuntu 11.10 (Oneiric) server or desktop to Active Directory. Using either of these approaches an intelligent install script is used to install the DirectControl Express agent and join the system to Active Directory.
Many Ubuntu users however prefer to install software packages like Centrify DirectControl Express using the built in package managers like Software Center, Synaptic, Adept, Aptitude, apt-get or others.
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Revelation is a password generator and manager.
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The stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server. It can be used to add SSL functionality to commonly used inetd daemons like POP2, POP3, and IMAP servers without any changes in the programs' code. Stunnel uses OpenSSL libraries for cryptography, so it supports whatever cryptographic algorithms you compiled into your library.
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