One of the essential steps while securing a Linux system is setting up a good firewall. Most Linux distributions come pre-installed with different firewall tools. Iptables is one such default firewall of Linux distributions. For older versions of Linux kernel, Ipchains was the default firewall.
Using IP tables for configuring a firewall
by Tajinder Kalsi
Practical Linux Security Cookbook - Second Edition
- Title Page
- Copyright and Credits
- Contributors
- Packt Upsell
- Preface
- Linux Security Problem
- Security policy
- Configuring server security
- Security policy – server security
- Defining security controls
- Checking the integrity of installation medium by using checksum
- Using LUKS disk encryption
- Make use of sudoers – configuring sudo access
- Scanning hosts with Nmap
- Gaining root on a vulnerable Linux system
- Missing backup plans
- Configuring a Secure and Optimized Kernel
- Local Filesystem Security
- Viewing files and directory details using ls
- Using chmod to set permissions on files and directories
- Using chown to change ownership of files and directories
- Using ACLs to access files
- File handling using the mv command (moving and renaming)
- Implementing Mandatory Access Control with SELinux
- Using extended file attributes to protect sensitive files
- Installing and configuring a basic LDAP server on Ubuntu
- Local Authentication in Linux
- Remote Authentication
- Network Security
- Security Tools
- Linux Security Distros
- Bash Vulnerability Patching
- Security Monitoring and Logging
- Viewing and managing log files using Logcheck
- Monitoring the network using Nmap
- Using Glances for system monitoring
- Monitoring logs using MultiTail
- Using system tools – whowatch
- Using system tools – stat
- Using System tools – lsof
- Using System tools – strace
- Real time IP LAN monitoring using IPTraf
- Network security monitoring using Suricata
- Network monitoring using OpenNMS
- Understanding Linux Service Security
- Scanning and Auditing Linux
- Vulnerability Scanning and Intrusion Detection
- Other Books You May Enjoy
Using IP tables for configuring a firewall
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