There are several types of NSDs, each with its purpose. But are the five secrets about network security devices that you should know?
Let’s take a look at this article. So, read on to learn more.
Five Secrets About Network Security Devices
Here are the five secrets about network security devices.
1. NSDs Provide Host-Based Security to the Network
A network security device is a piece of hardware. It is designed to provide host-based security to the network.
In other words, these devices are used to monitor all network activity that is related to a particular host on the network. And then prevent any unwanted or malicious traffic from entering or leaving the host.
2. NSDs Protect the Network Against Intrusion and Attacks
Network security devices are used to protect the network against intrusion and attacks.
This is done by comparing the source and destination IP addresses of all packets that are received or transmitted. And then compares them against the list of allowed IP addresses.
3. The NSDs Provide Network-Based Security to the Network
Network security devices also provide network-based security to the network. This is done by filtering unwanted or malicious traffic that is entering or leaving the network.
The same way for host-based security. But it does not monitor your local hosts. Instead, it monitors inbound and outbound network traffic for any signs of suspicious activity.
4. NSDs Are Used to Provide Security Against Network Attacks and Intrusion
NSDs are used to provide security against network attacks and intrusion. Most commonly, these devices are used to protect a corporate network against any unwanted or malicious activity.
It prevents external threats from entering the network. It also prevents internal users from sending or receiving anything related to the attacks.
5. NSDs Compare Packets Against a Set of Rules
Finally, NSDs compare packets against a set of rules. These rules are included in a filtering policy. The filtering policy is configured on the network security device.
Examples of Network Security Devices
Various network security devices can be used to protect your network. So, below, we highlight some of the most common devices.
Firewalls
Firewalls are used to protect the network against intruders. Moreover, firewalls provide host-based security.
Therefore, they are designed to monitor all inbound and outbound traffic that is related to a particular host. And then block any unwanted or malicious traffic.
Routers
Routers can also be used as network security devices. They are used to monitor all inbound and outbound traffic.
It is used to enforce network security policies. Thus, they provide network-based security.
Intrusion Detection Systems (IDS)
IDSs are used to detect and prevent intrusion attempts. This is done by analyzing the packets that are received by the IDS device. If there are any intruders, you will be notified immediately.
Proxies and Firewalls
Two devices that are commonly used as network security devices are proxies and firewalls.
They can be used to provide host-based or network-based security. However, they are more commonly used to provide network-based security.
Conclusion
The 5 secrets about network security devices help you understand the purpose of these devices.
As a result, you have a better understanding of how they are used. As well as the role that they play in protecting the network against threats.