Udemy – Linux Security & Hardening, The Practical Approach – Sikhar Verma

Udemy – Linux Security & Hardening, The Practical Approach – Sikhar Verma
English | Tutorial | Size: 1.6GB


Linux Security guide with practical hardening tips to prevent Linux server from hackers & protect it against hacking.

Introduction

· About Security

· Tips & Tricks

Physical Security of a Linux Box

· Overview of Physical Security

· BIOS Firmware Security

· Set BIOS Password

· Single User Mode Security (RHEL6/7)

· How to set password at Single User Mode

· Securing Boot Loader

· Section Summary

PAM (Pluggable Authentication Modules)

· Overview of PAM Security

· Concepts of PAM

· PAM Modules & Configurations

· PAM Module Groups

· Control Flags in PAM

· PAM Modules

Account Security

· Overview of User Account Security

· User Account Information

· Forcing strong passwords

· Pam_pwquality – Password strength-checking

· Security by Account Locked

· Account Locked using pam_faillock PAM module – Lab Session

· Understanding Password Aging Policy

· Practice Lab Session

File System Security

· Overview of File & Directory Permission

· Access mode

· Change Permission & Ownership

· ACL

· Controlling files with ACL

· ACLs demo

· Practice Lab Session

General Security

· Keep your system updated

· Disable USB stick

· Turn off IPv6

· Restrict users to use old passwords

· Check password expiration

· Verify accounts for Empty password

· Verify accounts for “Zero” UID

· Review logs regularly

· Keep /boot as read only

Network Security

· Overview of Network Security

· Openssh Security

· Securing SSHD

· Linux Firewall

· Packet flow via firewall

· Configuring the Firewall from the Command Line

· Enable, Disable services at firewall

· Port forwarding in firewall

· Secure web server via firewall

· Masquerading & port forwarding – Lab Session

· Rich rules using firewalld

Implementing Mandatory Access Control with SELinux

· How SELinux Can Benefit a Systems Administrator?

· SELinux Security Concepts

· SELinux Modes

· SELinux – Lab Session

· Configuring SELinux Contexts

· SELinux Booleans

· Audit logs & Troubleshooting SELinux

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