Avoid doing your regular jobs when you are logged in as root. If possible, always try to use encrypted connections to work on a remote machine. Avoid using authentic method based on ip address alone.Try to keep the most important network-related packages up-to-date and subscribe to the corresponding mailing lists to recieve announcements on new versions of programs such as bind, postfix, and ssh. Disable any network services you do not absolutely require for your server to wok properly. RPM packages from SUSE are digitally signed. Check your backups of user and system files regularly. Check your log files. Whenever possible, write a small script to search for suspicious entries.Use firewall to enhance the security provided by tcpd (tcp wrapper)Design your security measure to be redundant. via linuxhaxor
