When you use the Linux operating system when dealing with security issues, the following rules and tips may come in handy.
1. log in as root, avoid doing some routine work. This will reduce your risk of infection and can prevent you to make some mistakes. 2. If possible, in a remote machine while you are working on, try to use an encrypted connection. Use SSH instead of telnet, ftp, rsh, rlogin should become standard practice. Because SSH security is well known. 3. try to keep the network-the most important package of the latest, best subscription number of the corresponding mailing list to get bind, postfix, ssh, and other programs of the latest version of the bulletin. The same principle also applies to local security related software. 4. disable you don't absolutely need for server functioning of any network services. This will make your system more secure. You can use the netstat program found socket status to LISTEN for open ports. 5. from SUSE RPM packages are digitally signed. You can enter the following in the console to verify the contents of any SUSERPM package integrity: rpm — chechsigpackage.rpm. required public gpg-key to at installation time to copy to the root's home directory. 6. regular checks of user and system files backup. Please remember: If you don't have a test backup is working, it's useless and worthless. 7. check your log files. If possible, write a small script to search for suspicious items. 8. use a firewall to enhance security, especially with tcpwrapper can raise security of system. 9. set the security measures to ensure its redundancy. Many see a security message is better than no news.
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