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Firewall act as a security gateway between two networks as trusted and untrusted networks. (VIKRAM SINGH)
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.
The difference between personel firewall and business firewall is that 1. personel firewall are using personel level such as laptop,desktop whereas business firewall we are using in a corporate world. 2. In personel firewall, we are not using appropriate antivirus that can prtect my lease line and In business firewall we are using antivirus that protects our lease line and ensuring us that data has been encrypted according to our Operating system.
Provides interoperability between the various networks and nations operating in Afghanistan.
A router (a piece of hardware) is just a way to move/share a connection with several other computers (i.e. using a router so that all three computers in your house can use the same internet connection) - while a firewall (usually a piece of software) is meant to block unauthorized access (hackers) to your computer/network and help protect you from viruses, spam, etc. ----- Put this way---- With a router (with default settings) in between two or more networks, hosts from any two networks can communicate accross, because router has to entertain them (no security zoning) With a firewall (with default settings) in between two or more networks, hosts from any two networks CANNOT communicate accross, because firewall MUST NOT entertain them (Security Zones) ----BTW Read these lines if you are getting interviewed----- ;)
Fiber optic interconnected star has its known destination. Star networks require more wire it features a hub, switch or router lending to several different connections.
differences between unilateral and bilateral networks
I believe it's a router. I have this question on a test the choices are. router, hub, layer 2 switch or firewall. I answered layer 2 switch. It was wrong.
2. What is different between computer networks and internetwork?
Firewall is a piece of software that creates a barrier between Internet and your PC. In short, Firewall analyzes the traffic that goes from and to your computer and blocks such packets (traffic) that could hurt your computer.
The firewall is located between the passenger compartment and the engine bay.
Wired networks have a wire that connects them to an internet port, wireLESS networks do not.