What is Firewall ? Types of Firewall and Benefits

Firewall is hardware and software combination that are built using routers, services and variety of software. They sit at the vulnerable point between a corporate network and internet. They can be as simple, complex as system administrator want to built them. Firewall reduces the speed of access network.

What is Firewall  Types of Firewall and Benefits

Due to internet openness every corporate network connected to it is vulnerable to virus network. Crackers on the internet can be break into the corporate network and cause harm in number of base-

• They can copy or damage important data.
• They can damage individual computer data or entire network.

Benefit of Firewall

• Protection from services which are run through network like on internet is prompt to attacks.
• Access in host in the network can be strictly controlled.
• Security is concentrated on a single firewall system. This leads to better implementation of authentication procedure.
• Logging and statistics of network use and misuse.

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Types of Firewall

Packet Filtering Firewall

This type of firewall examines are the packet it come across. It forward them or drops them based on redefine rules. The rudimentary firewall provides only basic protection. Packet filtering firewall are restrictive since network manager can only define a new parameter.

Packet filtering can be implemented on routers and other device in two ways-

1. Static Filtering
2. Dynamic Filtering.

Proxy Firewall

This types of firewall act as an intermediary of user request, setting up a second connection to the desire resource either at the application layer or at a session layer or transport layer. Proxy firewalls extend to take a performance it since it realize on application layer.There are restrictive when it come to allowing or denying evolving or new types of application.

Stage full Inspection Firewall

There are the new generation of firewall technology patent b check point software technologies. Stage full inspection provide full application layer awareness without requiring a separate proxy for every service to be secured.

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