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How To Secure Risky Network Ports

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By Author: eva winget
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How To Secure Risky Network Ports
Network ports are available to support all types of traffic. Risks are associated with all kinds of ports, but out of all, some are riskier. If you want to know how to secure dangerous ports, you can read this post. This post is all about securing risky ports.


Network Addressing
IP addresses are used to develop network and internet Transport Control Protocol. For example, when you access a site like digitaltrends.com in a web browser, it is the IP address responsible for connecting you with the right internet server. The same process happens in the case of the reverse connection. Your computer’s IP address works behind the traffic that you receive on your computer.

You may run your PC for different activities at a time. You may use it to run some applications like email or a web browser. You may use chatting apps. During accessing any remote system, you may use SSH or a secure shell connection. Remote Desktop Protocol and Virtual Private Network can be used while working from home.

An IP address is only a unique address for a computer. It is only ...
... the identification value for the computer. A network connection is all about the application or service used on a PC. Computers use the ports to send applications to the network packet.

Standard Port Numbering
Some ports only drive some particular traffic. Such types of ports are known as well-known ports (0-1023). Other ports are registered to work with specific applications. And they are known as registered ports (1024-49151). Apart from all these ports, the third types of ports work with all kinds of applications. Such types of ports are known as ephemeral ports (49152-65535).

Different types of ports are used while establishing a network connection. For example, a computer requires a port at the local end and at the remote end to connect. HTTPS connection requires a remote port called 443. The computer can connect through any free ephemeral ports to establish a connection to 443 ports.

Ports are not naturally safe
If you think some ports are secure than others, you may be wrong. A network port is neither safe nor at risk. It all depends on its use. If you can use a port without any danger, then no doubt it is secure. But if you fail to use it securely, it is at risk. The system or service you use to communicate through port should be updated with the recent security updates.

Some ports are below that can be misused.

FTP, port 21
If you use an unsafe FTP port, it can be precarious. Vulnerable FTP servers can be authenticated anonymously. There are different types of malwares like WinCrash, Dark FTP that weaken FTP ports.

Secure shell, port 22
Several risks are associated with SSH. If a secure shell is managed through weak or short passwords, it can be easily compromised through passwords dictionary attacks. You must follow patching to keep it safe.

HTTP, port 80
Risky internet traffic is received through port 80. Traffics that are driven insecurely, their associated ports face forgery attacks and other types of dangers.

Port 161
Some port’s communication systems allow cybercriminals to gain much information related to your network. And port 161 is prone to attacks as attackers can take advantage of it to get data from servers about your computer and connection.

Ways to secure risky ports
The infrastructure you use must be updated with the latest security updates. You should stop using Telnet and port 23. You can use public-key authentication or 2FA authentication to protect SSH ports. Don’t compromise with your network or hardware security. Make sure that you have disabled the proxies that are not required.

Eva winget is a Microsoft Office expert and has been working in the technical industry since 2006. As a technical expert, Bella has written technical blogs, manuals, white papers, and reviews for many websites.

Source: https://websoftwareblogs.com/how-to-secure-risky-network-ports

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