![]() Apart from those hackers there can be unknown people such as the neighbours looking out for an open internet connection. When the hackers happen to find such computers they will start to do even malicious activities such as spreading viruses. Hackers on the internet constantly look for computers in order for carrying out their illegal activities. A firewall in this instance will immediately block Trojans before they cause any damages to your system. Obviously you will not know their presence until the strange behaviours of your computer. ![]() Whatever the information they gather will be sent to a web server. A Trojan silently sits on your computer spying over all the works you do with it. Malwares especially the type Trojans are dangerous to a user. If any chance the firewall happens to find them it will immediately block them. ![]() Firewall inspects each of these packets for any hazardous threats. Whatever the information traveling through a network is in the form of packets. A major responsibility of a firewall is to monitor the traffic passing through it.
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