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A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and untrusted external networks, allowing only authorized data packets to pass through while blocking unauthorized or potentially harmful ones based on set criteria. This helps to protect a network from cyber threats and unauthorized access.

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Q: What is the function of firewall and how does it work?
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Related questions

How can one find out what the function is of a firewall?

One can find the function of a firewall on various websites like Wikipedia and Dummies. One could also check his firewall in control panel and read what the function of a firewall is.


Why doesn't runescape work on mine own computer?

you need to download java...or your firewall is not allowing jagex to function


What do you do when firewall blocks internet access?

When firewall blocks internet access you can cancel this function or reinstall your antivirus software.


What is the function of NAT when it is configured on a firewall appliance?

we dont know about it


How do you disable your computers firewall?

Removal or customisation of the firewall is an administrative function. If you need to ask the question then you should not be contemplating it. The firewall protects both your computer and, because you are clean, the computers with which you communicate.


Which devices work in the presentation layer?

firewall, router,layer 3 switches and i approve that answer ! NO! In general the firewall is a layer 4 device, it traffics filter incoming and outgoing ports. It uses the function of TCP and UCP. However a Firewall can also be a layer 3 device as in internal firewall in a router. Also a switch is a layer 2 device unless your talking about a Router switch.


How do you make the vent work on your 1995 lesabre?

It could be the vacuum line on the firewall in the engine compartment. The line is in the center of the firewall, about 6 inches from the top. The vents are vacuum actuated. You should still have the "heater" (floor) function and defrost. If you don't then it's something else..Need more info.


What is a function performed by an intermediary permits only known trusted data to access the network?

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How do you get rid of a firewall?

depends on the software you are using for the firewall. if your using windows xp firewall just disable it. start-->control panel-->firewall then click the opt button to turn it off. This is not a detailed enough answer neither does it work.


The firewall settings in advanced option on lan card is grayed out?

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Is AVG resident shield a firewall?

No. The resident shield works in the background scanning everything you work on. Avg has a separate firewall that you have to buy.


Which intermediary devices could be used to implement security between networks?

Security between networks is implemented in an intermediary device (a router or firewall appliance) at the perimeter of the network. The firewall function performed by this device permits only known, trusted data to access the network.