By Gerhard Mourani
Booklet by means of Mourani, Gerhard
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Additional resources for Securing & Optimizing Linux: A Hands on Guide for Linux Professionals
Installing setuptool. Installing shapecfg. Installing slang. Installing slocate. Installing stat. Installing sysklogd. Installing tar. Installing tcp_wrappers. Installing tcpdump. Installing tcsh. Installing time. Installing timeconfig. Installing timed. Installing tmpwatch. Installing traceroute. Installing utempter. Installing util-linux. Installing vim-common. Installing vim-minimal. Installing vixie-cron. Installing which. Installing zlib. Copyright 1999 - 2000 Gerhard Mourani, Open Network Architecture ® and OpenDocs Publishing 35 Linux Installation 0 CHAPTER 2 Installing gpm.
Multi on # Check for IP address spoofing. nospoof on The order option indicates the order of services. The sample entry specifies that the resolver library should first consult the name server to resolve a name and then check the “/etc/hosts” file. It is recommended to set the resolver library to first check the name server (bind) and then the hosts file (hosts) for better performance and security on all your servers. Of course you must have the DNS/BIND software installed or this configuration will not work.
To do that, you must set the special variable of Linux named “TMOUT” to the time in seconds of no input before logout. Edit your profile file “vi /etc/profile” and add the following line somewhere after the line that read “HISTFILESIZE=” on this file: TMOUT=7200 The value we enter for the variable “TMOUT=” is in second and represent 2 hours (60 * 60 = 3600 * 2 = 7200 seconds). It is important to note that if you decide to put the above line in your “/etc/profile” file, then the automatic logout after two hours of inactivity will apply for all users on the system.