Security
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Wikipedia structures (information) security into three parts: confidentiality, integrity and availability. This article deals with confidentiality and integrity, for securing your data's availability, see backup.
General Security
- Linux Security Basics
- Basic Linux file system attributes
- Linux security vulnerabilities
- Obtaining security updates
- Community security resources
- Identifying and disabling extraneous services
- Check for weak passwords
Physical security
This chapter is about Hardening against users with physical access.
Disk security
Network Security
Wireless network security
Network services
FireWalling
- Firewall - Iptables, configuration, firewall software
- Detecting portscans
Email Security
- Sender Verification
- Spam Filtering
- detect if your mailserver is used as a spambot
- Using GPG
- Using MailScanner/Postfix/SpamAssassin/ClamAV in Gentoo Linux
- Postfix with clamav-milter