SSH is a protocol that guarantees that both the client and the remote server exchange information in a secure and dynamic way. The process is capable of encrypting the files sent to the server directory, Vietnam Phone Number List guaranteeing that the alterations and the sending of data are carried out in the best way possible. Ivan de Souza Apr 16, 20 | 7 min read what is SSH The development or maintenance of websites are common demands in any company that works with these services. Maintaining the security of processes is one of the obligations of professionals and, for that, it is necessary to use the main resources. The SSH protocol is one of the working parameters that guarantee that the information will be properly protected. The communication of a computer with a server is a recurring activity during these demands of managing a site.

Transferring data is an integral part of the task and, when this moment arrives, it is essential to ensure that the process is safe and, above all, protected. In this article we are going to talk about the SSH protocol and its importance. Do not miss this detailed material, according to the following topics: What is the SSH protocol? When does it need to be accessed? What are the cryptographies used by SSH? How to access the SSH portfolio?

Read on and find out! What is the SSH protocol? SSH is an acronym, or acronym, for the term secure shell, which stands for secure capsule. In practice, the SSH protocol is a security mechanism offered by hosting services . Its function is to guarantee that there is a secure connection between the computer and the remote server, guaranteeing the transfer of data without any loss of information. SSH has the function of allowing users and developers to make any modifications to sites and servers using a simple connection. In this way, through a computer connected to the internet, that person can configure, modify files and even work on the development of a web page. The proposal of this protocol is precisely to create a secure method that guarantees that there will be no invasion of these files and their codes. For this reason, cryptographies are used that guarantee that only two points access the information: the server and the computer that sent the data to that remote location.

The operation of the SSH protocol In practice, SSH offers a mechanism for there to be the authentication of that remote user, guaranteeing that this person has authorization to communicate with the server. In this way, the connection is created through the protocol and the information is transported in this secure shell model, with the cryptography that protects the data. The SSH is accessed via the terminal, regardless of the operating system used, and then the cryptography that will protect the information is developed. Through the window the connection with the remote server is made, and then the process is carried out. When does the SSH protocol need to be accessed? SSH is a resource used at specific times and for jobs that are routine for programmers and developers. From testing to alterations, when the site is ready, there are several stages in which it is necessary to create a secure connection between the access point and the remote server. Next, you better understand when the protocol is used and discover how it becomes relevant on each of those occasions. Programming Programming is a stage of work that is related to the creation of a website. Programmers develop code, make alterations and need to test how all that development behaves with the application on the air. For that, it is necessary to transfer the data to the server and then analyze the behavior of the online pages. This procedure can be done even during the installation of a CMS , such as WordPress, so it is possible to see if the commands sent from the panel are activated correctly. During the whole process, for several times, the exchange of information with the remote server must be done, which justifies the need to maintain the security of the codes.

Protecting that information is the guarantee that the structure built for that site will not be unduly deviated. This protects the professional’s intellectual property and the client’s investment. Deploy Deploying is a very common process in the routine of developers and it is a site update job, which is generally made up of changes or new applications implemented on it. Deploying is a longer job and most of the time involves transferring a high level of files, which also requires a secure method. Therefore, the use of SSH is the best way to conduct this work. The protocol is usually a recurring option for the professionals responsible for taking care of these tasks. By means of the Secure Shell, there are guarantees that the transfer of new applications and alterations is made in the appropriate time, without failures and without loss of information. What are the main cryptographies used by SSH? Cryptography is what guarantees, in addition to site security , the connection protection between the client and the remote server. However, there are different cryptography structures that can be applied when using the SSH protocol in that demand.

They are, basically, three alternatives: symmetric, asymmetric, and hashing. Find out more about them. Symmetric cryptography This is a form of cryptography that is performed by means of a secret key, that which is shared only between the server and the user. Its role is to encrypt or decrypt the message that is transferred in this process, however, the Secure Shell only offers the reading of the content by presenting that key. The asymmetry reference nomenclature originates from the process used to generate that key. It is created by an algorithm that automatically sends the key to the two parties involved: client and server. But, there is no transfer of that information between the two parties, it is up to the algorithm to send it to each one separately. Every time an SHH session is created, a new cryptography key is generated just before authentication.

Thus, when transferring the file, the user already has the password used to encrypt the content and then send it to the server. Asymmetric cryptography This model is the opposite of the previous one: two keys are used, one for the client and one for the server, so that there is the cryptography of the transferred data. The keys are public and private calls, thus forming the necessary combination to generate the SSH and its security protocol. In this model, the public key is distributed openly and shared. However, from it it is not possible to discover what the private key is. This happens thanks to a process that works as follows: messages encrypted by public keys can only be decrypted by the private key of the same machine. The private key, in the middle of this process, must remain inaccessible to third parties, being owned and used by the client. This is essential, since its use allows decrypting the public keys, and thus accessing the transferred content.

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