Stateful Multilayer Inspection Firewalls.Firewalls generally only Screen the Packet Headers.Firewall can filter contents on the basis of Address, Protocols, Packet attributes and State.A Network Administrator can define what is important for him and configure the Firewall to make the Logs accordingly. Firewalls generally also maintain a log of Important Activities in Inside the Network.Only, If the Data Packets are allowed as per ACL, they will be Transmitted over the Connection. Firewall examine all the data packets passing through them to see if they meet the rules defined by the ACL (Access Control List) made by the administrator of the network.A Firewall can also be considered as a Gateway deployed between the two Networks. A Firewall needs to be connected to a minimum of two Network Interfaces, one which is supposed to be protected (Your Internal Network) and other which is Exposed to Attacks (Generally Internet). A Firewall can be in the form of a Hardware or a Software on a Computer, as well. This document gives information about firewalls and their types:įirewalls protect a Network of Computers from being Compromised, Denial of Service and other Attacks from Hackers trying to Intrude the network from outside. Stateful Multilayer Inspection Firewall:.
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