SSH is a highly secure key management protocol. It is a special network protocol leveraging public-key cryptography to allow authorized users to remotely access a computer or other device via access credentials called SSH keys.

While SSH keys are standard, and more frequently used, in Unix and Linux environments, they are also used in Windows systems. If you want to generate ssh key then you required a third-party application. So, suggest here Putty Key Generator. It is easy to use.

This article involves the complete ssh overview and the best way of ssh security. So, without wasting time, let's start with the article.

SSH technology is based on the client-server model and presents an ideal way to obtain remote devices over unsecured networks such as the internet. The technology is typically managed by administrators for various functions including

1. Logging into remote systems/servers for support and maintenance.
2. Transferring of files from computer to computer.
3. Remote execution of commands.
4. Extending support and updates.

Today, Telnet is one of the Internet’s first remote login protocols and in use since the 1960s, has mostly been superseded by SSH, owing to the latter protocol’s enhanced security features.

SSH keys are always generated in pairs. These pairs consist of one public SSH key and one Private SSH key.

These keys are paired using extremely strong algorithms, performing it infeasible to figure or fake a private key, even if you know the public key. While private keys should be kept secret by the authorized person wishing to gain access to a system, public keys may be freely shared.

For creating ssh key easily, you required a key generator tool is Putty. It is the best key generator tool used for supporting almost all network protocols. Accessing putty on windows is also fine but if you are able to access it on Linux then it is the best combination. As Linux is open source.

1. PuTTY

2. The IP address and username for the Linux System instance that uses an SSH public key as the Authentication type.

3. Port 22 is to be open for the system.

4. The private SSH key matched with the public key.

5. The client computer that appears PuTTY is to be on the same network.

As with any other security protocol, it’s necessary to keep strong standards and the best systems around SSH network protocols and keys.

Automated solutions dramatically explain the process of planning and rotating SSH keys, eliminating SSH key sprawl, and securing SSH keys allow productivity without compromising security.

To harden security controls around SSH Keys, you should also implement the following six best practices -

1. Discover all SSH Keys and Bring Under Active Management

A first step to eliminating SSH key sprawl and accurately evaluating SSH security risk is to discover and record all SSH keys and then to reign in the centralized authority of all keys. This is also an appropriate juncture to determine who is using various keys and how the keys are being used.

2. Ensure SSH Keys Are Associated With a Single Individual

The SSH keys are behind to an individual, rather than just to an account that can be obtained by multiple users. This will present an efficient SSH audit way and more direct oversight.

3. Enforce Minimal Levels of User Rights Through PoLP

Apply the source of least privilege (PoLP), such as in equaling SSH keys to granular regions of remote devices, so users can only obtain certain, important systems. This limits the possible result of the misuse of SSH keys.

4. Stay Attentive to SSH Key Rotation

Perform constant SSH Key rotation support users to produce keys on a regular basis and refuse the use of the same passphrases crossed multiple accounts or repetitions. These activities help preserve the organization from password reuse attacks. In organizations with a large SSH key property, this can only be feasibly produced via an automated solution.

5. Eliminate Hardcoded SSH Keys

SSH Keys are one of the many types of credentials that can be installed within code, such as in applications and files. This method performs critical backdoors for malware and hackers to exploit. Embedded keys that use simple or default passphrases may be vulnerable to password-guessing and other offenses. Therefore, an essential piece of SSH security is to open and reduce embedded SSH keys and bring them under incorporated management.

6. Audit All Privileged Session Activity

Any free session began via an SSH Key Authentication should be recorded and reviewed to match both cybersecurity and regulatory needs. Privileged session management projects can involve catching keystrokes and screens. Ideally, you also layer on the capacity to control privileged sessions in real-time to maintain strong mistakes and a short leash over-privileged activity.

This article includes "Overview of SSH Key Authentication". As SSH is a highly secured socket connection. Also, it helps to generate ssh keys. Read this article and know about generate user define keys.