Internet

• A firewall is a network security system that monitors incoming and outgoing traffic based on predetermined rules.
• Firewalls can be hardware or software-based, and they are used to prevent unauthorized access to a private network by blocking unwanted traffic.
• The two main types of firewalls are packet filtering firewalls and stateful inspection firewalls.
• There are two main types of firewalls: packet filtering firewalls and stateful inspection firewalls.