Course Curriculum
Introduction and Course Overview
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Security Concepts
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Lab Setup
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Securing User Environment
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- Welcome to Section 4 (0:09)
- Understanding etc.passwd file (10:09)
- Understanding etc.group file (5:42)
- Understanding etc.shadow file (6:54)
- The etc.login.defs File (5:36)
- Creating User Account and Changing Password (8:47)
- Change Password Parameters (8:25)
- Set Password Policy (12:21)
- Lock or Disable User Accounts (7:28)
- Lock or Disable User Accounts Manually (7:06)
- Lock User Account After 3 Failed Attempts (9:08)
- Restrict Direct “root” Login (7:49)
- Disable SSH Access for a Specific User (5:31)
- ulimit (14:08)
- Implement UIDGID Policy (7:31)
- Centralized Authentication Service or Directory Services (5:13)
- sudo Access (19:22)
- Monitor User Activity (21:59)
- Linux Security Quiz 3
- Handouts
- Homework
PAM (Pluggable Authentication Module)
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- Welcome to PAM (0:06)
- What is PAM (9:12)
- The Importance of PAM (4:06)
- The PAM File Configuration Format (4:41)
- The PAM File Configuration - Module Interface (5:19)
- Account Access Through PAM (1:34)
- The PAM Configuration File – Control Flags (3:11)
- The PAM Configuration File – Modules (SO) (10:35)
- PAM Aware Services and Stacks (7:39)
- Linux Security Quiz 4
- Handouts
- Homework
Securing Linux Filesystem
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Securing Linux System
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- Welcome to Securing Linux System (0:09)
- Message of the Day (motd) (7:30)
- Customize Message of the Day (10:36)
- Physical Server Security (4:22)
- Remove Un-necessary or Orphan Packages (11:54)
- Keep Kernel and System Up to Date (12:20)
- Stop and Disable Unwanted Services (15:28)
- Separate Disk Partition (6:21)
- Disable Alt+Ctrl+Del (8:43)
- One Service Per Server (4:41)
- Change Default Console Password (5:01)
- Disable USB Stick Detection (2:26)
- Network Time Protocol (15:40)
- Lockdown Cronjobs (7:09)
- Change SSH Port (8:54)
- SELinux (35:35)
- System Backup (7:12)
- System Upgrade and Patch Management (8:41)
- Linux Security Quiz 6
- Handouts
- Homework
Securing Linux System Network
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- Welcome to Securing Linux Network (0:09)
- Introduction to Firewall (4:22)
- Firewall (iptables – tables, chains and targets) (10:49)
- Linux Firewall (iptables – practical examples) (24:09)
- Firewall (firewalld) (8:53)
- Firewall (firewalld – Practical Examples) (23:35)
- Firewall (firewalld GUI) (5:09)
- Encrypt Incoming and Outgoing Traffic (3:50)
- SSH vs. TELNET (10:08)
- Turn Off ipv6 (6:25)
- NIC Bonding (17:42)
- Linux Security Quiz 7
- Handouts
- Homework
Securing Environment Around Linux
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Additional Resources
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- Welcome to Addtinal Resources (0:09)
- Getting Linux Commands Help (5:02)
- Talking to Users (8:30)
- File Transfer Commands (10:25)
- Compress and Uncompress Files (9:42)
- System Log Monitoring (11:08)
- Advance Package Management (15:01)
- sed Command (21:00)
- NIC Bonding (17:42)
- User Directory Authentication (5:50)
- Changing password (4:36)
- Difference AD, openLDAP, WinBind etc. (8:34)
- Recover Root Password (5:26)
- File System Check (16:43)
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