
University of Colorado System
Skills you'll gain: Linux Administration, Linux, Linux Servers, Ubuntu, Operating System Administration, Red Hat Enterprise Linux, Unix, User Accounts, Linux Commands, System Configuration, Hardening, Security Controls, Authorization (Computing), Network Administration, Authentications
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Linux Commands, Linux Administration, Network Troubleshooting, Linux, Network Administration, File Transfer Protocol (FTP), Virtual Networking, TCP/IP, Network Infrastructure, Network Protocols, Command-Line Interface, System Configuration, Virtualization, General Networking, Software Installation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Malware Protection, Endpoint Security, Mobile Security, Cloud Security, Application Security, Cloud Deployment, Cloud Computing, Threat Detection, Cybersecurity, Information Systems Security, Virtualization, Virtual Machines, Intrusion Detection and Prevention, Encryption
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Key Management, Network Security, Digital Communications, Hardware Architecture
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: User Accounts
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Bash (Scripting Language), Shell Script, Unix, System Monitoring
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Shell Script, Package and Software Management, Linux Administration, Linux Commands, Unix Shell, Systems Administration, Hardening, Unix Commands, Patch Management, Scripting, System Monitoring, User Accounts, Dynamic Host Configuration Protocol (DHCP), System Configuration, OS Process Management, Firewall, Process Management
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Public Key Infrastructure, Cryptography, Key Management, Encryption, Windows Servers, Infrastructure Security, Active Directory, Network Infrastructure, Authentications, Cybersecurity, System Configuration, Configuration Management, Data Integrity
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Linux Commands, Linux, Unix Commands, Command-Line Interface, File Management, System Configuration, Linux Administration, Package and Software Management, DevOps
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Linux Commands, Linux, OS Process Management, Command-Line Interface, Unix Commands, User Accounts, Bash (Scripting Language), Shell Script, Linux Administration, Unix Shell, File Management, Remote Access Systems, Scripting, DevOps
Beginner · Course · 3 - 6 Months

Coursera
Skills you'll gain: Bash (Scripting Language), Shell Script, Unix Shell, Scripting, Linux Commands, Unix Commands, Command-Line Interface, Linux, File Management, Unix, File Systems, Systems Administration
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Vulnerability Scanning, Network Security, Configuration Management, System Configuration, Vulnerability Assessments, Firewall, Linux Commands, Servers, TCP/IP, Network Analysis, Software Versioning
Intermediate · Course · 1 - 4 Weeks