Linux Networking and Security

О курсе

This course covers Linux networking and security: how systems connect and communicate over a network, and how to protect them from unauthorized access and attack. These are two central responsibilities in system administration. You'll start with networking foundations, including what a network is, the OSI model, IP addressing, and the theory behind TCP, UDP, ports, and DNS. You'll then run networking commands to analyze interfaces and routing, test connectivity, and use DNS tools to diagnose name resolution. The course then covers interface configuration and traffic analysis. You'll map network services to ports and processes, capture and filter live traffic with tcpdump, and monitor bandwidth and network performance to troubleshoot issues end to end. It closes with remote access, security, and hardening: configuring SSH key-based authentication and secure file transfer, managing firewall rules and access control, scanning systems with nmap, hardening SSH services, and applying Fail2ban intrusion prevention. By the end of this course, you will be able to: - Configure and analyze network interfaces, routing, and active connections. - Explain the OSI model, IP addressing, and the roles of TCP, UDP, ports, and DNS. - Diagnose connectivity and DNS resolution issues using command-line tools. - Capture and filter network traffic with tcpdump and monitor performance. - Secure remote access using SSH key-based authentication and file transfer. - Harden Linux systems with firewall rules, nmap scanning, and Fail2ban. This course is intended for system administrators, DevOps engineers, and aspiring security professionals. Learners should be comfortable with the Linux command line, Learn to configure, diagnose, and secure Linux systems on a network.

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Edureka

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