A Firewall protects computers that are stand-alone or a part of a LAN against outside intrusion.
Firewalls work as filters between the outside world and the private network.
A Firewall approves some traffic and blocks unauthorized users who attempt to access a network.
A Firewall could be either a piece of hardware, software, and a network.
Types Of Firewalls
Packet Filters:-
Packet Filters Firewall examines all the packets it comes across. It forwards them or drops them based on pre-defined rules. This Firewall only provides only basic protection.
Proxy Firewall:-
A Proxy Server also is known as a gateway, acting as a middleman that relays data between the network and the outside world. The Proxy prevents outsiders from gathering information.
Benefits of Firewall
- Protection from services which are more prone to attack.
- Access to host in the network can be strict can be controlled.
- Logging and statistics of network use and miss use.
- Policy enforcement.
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