The scope of network security goes way beyond protecting the physical network itself. There are many components of security, including the software, hardware, and infrastructure that need to be addressed.
But for high levels of security, you must have a large security team.
It is not enough to make sure that the network is protected and secured from those outside, but the systems in the network need to be secure as well.
Therefore, it is imperative that the systems that are managing and protecting the network are well maintained and reliable. Network maintenance involves inspecting, testing, and repairing all components of the network system. It also involves constant monitoring of the data, ensuring that all systems work properly.
Having good networking management tools is a plus, because it helps the team monitor and maintain its network efficiently. These tools help the network administrator to find errors in the system and allow the team to fix them before they can cause further damage.
In addition, these tools can prevent unauthorized users from entering the network, thereby protecting the network security. These tools can also assist the team in implementing a security strategy for the network, whether a more stringent or lighter security is needed.
A firewall system is essential in any network, but it is especially important in a highly secured network. A firewall prevents unauthorized users from gaining access to the network. This means that a firewall cannot only prevent unauthorized users from gaining access to the network but also restricts access by those who are supposed to be authorized.
Firewalls are usually found in server farms where the Internet is used
to do many different tasks, such as serving internet, hosting websites, as well as processing financial transactions. A firewall helps secure the entire server farm, blocking information that doesn’t belong to the network to access the Internet.
Monitoring tools such as time-series analysis and statistics are also important in network management tools. When a computer receives a stream of data, it sends out bits of this data, which are called packets, to the network interface card. Each packet contains some key information about the system, such as the destination IP address and the originating source address.
- When an application sends data to the network,
- the network has to look up the address and send the data back to the originating computer,
- which is the one that will handle the data.
- The data is sent as packets, which are sequential so each piece of data is sent in a series of packets.
If a packet is lost or corrupted, then it has to be repaired before it can be received by the destination computer. Since a firewall does not only protect the network but also the applications on the network, the network administrator can easily check whether or not the packets are arriving in time.
A protocol analyzer can also look at the packets to determine whether they are of a standard size and can filter out those that are corrupt or contain protocol errors. Thus, a firewall is useful, but if the network administrator can also identify the erroneous packets, he can easily detect the problems in the network.
Today, networks are using technology that monitors the traffic on the network and can act quickly to keep the network security intact. Modern technologies are able to provide real-time protection and security solutions that were previously impossible.