RHEL 9
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Session 1 - 8th October - Operating System (OS) | Why Multiple OS | Kernel | Linux Distributors | Virtualization | Installation of Oracle Virtual Box | OS Image | Host OS| Guest OS | Installation of OS | Interact to OS | GUI | CLI | WebUI | Login to OS | Commands | Arguments | Terminate a Program | Short cuts or Signals | Location of a Program | User Account | Multiuser Facilities | Basic Commands | Consoles or VT | Switch to Consoles | Manual of a Command (215:48)
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Session 1 - Summary
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Session 2 - 9th October - Remote Login | Network Interfaces | Basics of Networking | Virtualization | Baremetal | SSH Procol | Putty | DNS | RPM | Kernel | Install Packages (235:07)
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Session 2 - Summary
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Session 3 - 15th October- RPM | Repository | YUM Configuration | Server | Service | Configure Webserver | Configure Webclient (175:30)
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Session 3 - Summary
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Session 4 - 16th October - Server | Process | Webserver | Apache HTTPD Webserver | Network Drivers | SELinux | NMAP Command | Logs (174:28)
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Session 4 - Summary
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Session 5- 29th October- Login Ways | Remote Login | SSH | SCP | WinSCP | PermitRootLogin | Empty Password | Printmotd | Authentication (224:17)
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Session 5 - Summary
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Session 6 - 30th Oct- Plain Text | Cipher Text | Private and Public Key | Symmetric and Asymmetric Key | ssh | Key Based Authentication | User Management (217:09)
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Session 6 - Summary
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Session 7 - 19th Nov- useradd Command | adduser Command | /etc/passwd file | GECOS | chfn Command | man Command | finger Command | who Command | w Command | Home Directory | /home directory | Bash Shell | Nologin Shell | Shell Program | Interactive Users | Non- interactive Users (138:10)
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Session 7 - Summary
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Session 8 - 20th Nov- Superuser | General User | System or Service User | /etc/shadow file | /etc/login.defs | Hashing | Epoch Time | Password Aging (137:50)
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Session 8 - Summary
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Session 9 - 26th Nov - User Permissions| Permissions on a file | Permissions on a directory | Modes | chmod Command | chown Command | su Command | Groups | /etc/group| chgrp Command (149:08)
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Session 9 - Summary
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Session 10 - 27th Nov - DAC (Discretionary Access Control) | Linux Permissions | Special Permissions | Sticky Bit | SGID | SUID | Challenge of 'w' Permission | Set sticky bit on a folder | Primary Group | Secondary Group | newgrp command | gpasswd command | /etc/shadow file |Use case of SUID (147:23)
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Session 10 - Summary
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Session 11 - 3rd Dec - POSIX | ACL | getfacl Command | setfacl Command | Mask | Effective Permissions | Umask | Sudo Power| Admin Level Commands | System Level Commands | /etc/sudoers main configuration file | /etc/sudoers.d secondary configuration file | Wheel Group | Visudo (172:25)
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Session 11 - Summary
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Session 12 - 4th Dec - Security Program | Firewall | Network Service | Network Traffic | Firewalld Service | Pre-created rules (Zones) | Custom rules | firewall-cmd Command | Network Interface Card (NIC) | Implement Firewalld on NIC Target | Zones | PAT | Masquerade | Port Forwarding | Rich Rules | How to reset root password? | Podman | Cockpit (194:50)
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Session 12 - Summary
Google Drive Link
Basic Prerequisite Videos
Extra Videos by Vimal Sir
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Basic Concepts of Partition (100:23)
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Create a Partition (100:08)
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Partition | Format | Mount (94:24)
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LVM | Extend the LV (103:24)
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Summary - LVM 1
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LVM | Reduce LV (79:12)
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Summary - LVM 2
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FSTAB | Swap Space (72:08)
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Summary - FSTAB
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NAS | NFS | Persistent Mount | NTP Servers and Clients (117:23)
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Logs | Metrics | Importance of Logs and Metrics (110:34)
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NAS | NFS | Autofs (79:21)
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Stratis | VDO | Crontab (44:02)
Extra Videos on SELinux by Vimal Sir
Extra Videos on Podman by Vimal Sir
Practice Questions
RHEL Revision Session
