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Help Net Security: A Quick Way to Secure a Linux System

Apr 11, 2003, 08:00 (4 Talkback[s])
(Other stories by Paul Christensen)

"The first step in securing your system is to determine what the function of that system is going to be. For example, if the system is going to be dedicated to being an ftp server,then there is little reason to having samba or sendmail installed because the more services that are running, the more vulnerable the system is going to be. This cannot be stressed enough. You do not want services running that you won't be using.

"So we begin with a fresh install of the system with the Linux distribution of your choice, and in that installation process we'll choose the security settings for 'High' or whatever the equivalent is if the option is available. This should enable package filtering, regulating what is and isn't allowed to connect to your system..."

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