A Network Administrator maintains and upgrades networks and servers, installs new hardware and applications, and monitors for updates. They administer third-party applications, ensure network security and connectivity, and manage user accounts.

The typical duties and responsibilities of a Network Administrator may include:

• Maintaining computer networks and systems including software, mainframes, VPNs, routers and other physical hardware
• Installing and configuring network equipment to update or fix hardware or software issues
• Updating virus protection software to keep data and communications protected
• Monitoring computer systems to improve network performance for computer systems and networks
• Communicating networking issues to other employees and management, especially in training new users
• Fixing software and hardware configuration issues for users on-demand or from inspection of the systems
• Maintain Mail server with MDeaman
• Maintain Proxy Server with Pf Sense