Any network that needs to stay safe and secure should also beware of the incoming traffic as it tends to have a lot of dangerous things in it. Attackers could be sending in files and information into the network that are embedded with suspicious code that is set to execute once it has gotten into the system and past the safeguards that are in place such as the firewalls. This is the reason modern information systems are built with several layers of security between them and the user in order to safeguard their operations and ensure that nothing dangerous manages to get into the application.
Filtering the incoming traffic for suspicious code makes it possible to have any unwanted bits of information fended off and kept at bay while the rest of the traffic gets into the network. Network security is very sensitive for any installation and the internet has been the place where actual incidences of these networks being taken advantage of with files that are known to cause havoc on the system getting installed because of the network not being secure enough to prevent the unwanted information from getting in and bringing damage.
The suspicious code could also be used to modify the applications that are held within the network and make them to work in ways they were not intended to. An application can be modified to send information to the wrong destination and a hacker that has suspicious code past network defenses can reverse engineer the system for their own malicious gains. The code should be scanned before it can be allowed into the system as it holds the potential for getting the entire system down and out of service if it is allowed to get into the system and install itself. Whenever the code executes on a system, it causes the system to behave in weird ways and this is not good for any organization or internet business that needs to maintain its level of service provision.
Firewalls can be used as a means of filtering the incoming traffic to weed out instances of the suspicious code and this requires that the firewalls are programmed with a number of rules that enable it to determine what code is good and what code is bad so that it can make out the difference and only allow the clean traffic to get into a system and block out the rest of the code that does not seem to be of any use to the system.
In conclusion, the incoming traffic into any network should be clearly scanned and filtered in order to maintain the safety of the information systems that are being protected. These security features are also useful for keeping the applications running safely without any suspicious code getting installed onto them and causing damage and severe modifications to the normal operation of the applications that are on the systems that are connected to the networks. This is an important security practice that will keep your information safe and your systems intact and safe from all kinds of harm that might get meted out on it by hackers and other malicious information users.