Linux System Administration Take Course Introduction to Linux System Administration Introduction to Linux System Administration Lessons Understanding the Role of Linux System Administration Administration Tools Quiz Overview of Permissions in Linux Managing Processes Managing Processes Lessons Process Status Killing Processes Process Priority Overview of Permissions Overview of Permissions Lessons File and Directory Permissions User, Group, and Other Permissions Special Permissions (Setuid, Setgid, Sticky Bit) Starting up and Shutting Down Starting up and Shutting Down Lessons Peripherals Kernel Loading Console in Linux The Scheduler in Linux init and the inittab File Run levels in Linux Managing User Accounts Managing User Accounts Lessons Principles of User Management in Linux Password File Shadow File Groups and the Group File Shell in Unix User Management Commands in Linux Homes Directory in Linux LAB: User Accounts LAB: Home Directories Switching User and Switching Group Backup Data before user Deletion in Linux Removing Users Managing Unix File Systems Managing Unix File Systems Lessons Partitions Partition using fdisk SWAP Partition File System Device Files Lab: Partitioning a Disk and Using it Superblock inode block Boot Disks Rescue and Recovery Using Boot Disks: File System Checker Mounting File Systems Logical Volumes Network File Systems Partition using parted TCP/IP Firewall and IP Masquerade TCP/IP Firewall and IP Masquerade Lessons Introduction to Firewalls iptables and firewalld iptables chains and Rules Filtering Packets NAT and IP Masquerade Methods of Attack Sample Firewall Configuration IP Accounting Port Forwarding Stateful vs. Stateless Firewall Firewall Zones (firewalld) Logging and Auditing Firewall Persistence Troubleshooting Firewall Issues Advanced Firewall Features Firewall Management Tools Network Address Translation (NAT) Types Testing Firewall Rules Network Information System (NIS) and Network File System (NFS) Network Information System (NIS) and Network File System (NFS) Lessons Getting Acquainted with NIS NIS vs NIS+ Client Side of NIS Running an NIS Server NIS Server Security Preparing NFS Mounting an NFS Volume NFS Daemons The exports File System Backup & Recovery, Active Directory, LDAP System Backup & Recovery, Active Directory, LDAP Lessons System Backup in Linux System Recovery in Linux Log Files for System and Applications Backup Schedules and Methods Active Directory Lab LDAP Web Services and Databases Web Services and Databases Lessons Setting Up Web Servers Database Server Installation Installing GUI phpMyAdmin for MYSQL Management Lab Lab Lessons Lab 1- User Management Lab 2- Security Management Lab 3: Startup and Shutdown Script Lab 4: Firewall Configuration Lab 5: Firewall configuration with ufw