Which of the following Network Security aspect?
Network security aspect patch management, firewalls, intrusion detection system.
Patch management:-
Patch managementis an area of systems management that involves acquiring, testing, and installing multiple patches to an administered computer system. Patch management tasks include: maintaining current knowledge of available patches, deciding what patches are appropriate for particular systems, ensuring that patches are installed properly, testing systems after installation, and documenting all associated procedures, such as specific configurations required.
Firewall:-
A firewall refers to a network device which blocks certain kinds of network traffic, forming a barrier between a trusted and an untrusted network. It is analogous to a physical firewall in the sense that firewall security attempts to block the spread of computer attacks.
Intrusion detection system:-
An intrusion detection system is a system that monitors network traffic for suspicious activity and issues alerts when such activity is discovered. An intrusion prevention system also monitors network packets for potentially damaging network traffic.