Secure Communication Channels: Use Cases and Implementation Methods

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The security of communication channels and the data transmitted through them is one of the most important aspects of ensuring information security for any company. Which channel is considered secure? What technologies are used to build such channels? Today we will answer these questions and figure out in what situations a business is required to use secure communication channels according to the requirements of Russian legislation.

[color=var(--color-text-primary)]Why secure communication channels are needed

What happens when you open a browser on your laptop or smartphone and go to a website? At that moment, your browser interacts with a server, which, after the request, “delivers” the site’s content. However, before the traffic gets from point A to point B, it passes through many network devices – routers and switches.

These devices are under the responsibility of different organizations, so it is simply impossible to guarantee the security of data along the entire path that network packets take.

In cases where a company needs to guarantee data security according to its own security service requirements, secure communication channels are used. To ensure that the transmitted data cannot be changed or spied on, cryptography and authentication tools are used in their construction.

• Cryptography
• Authentication
  

When data is sent to the "destination", an electronic signature is sent along wordpress web design agency with it. It allows you to check whether the data has been changed during transmission. This is done very simply: another electronic signature is generated from the received information and compared with the one sent by the source. If the signatures differ, the data has been modified.

[color=var(--color-text-primary)]Secure VPN networks

The Internet is a public network, so VPN virtual networks are used to transmit confidential information. A secure VPN tunnel is built between two nodes that exchange data. This method ensures the confidentiality, security and integrity of information transmitted over public networks.

VPN tunnels allow you to build secure communication channels between offices and company branches, as well as provide access to corporate data for employees working remotely.

• Data protection is implemented as follows:
• the transmitted data is encrypted using cryptographic means;
• virtual network users are authenticated;
• The data is checked for authenticity and integrity.
  

There are two popular ways to build a VPN channel:

• between local networks
• between the local network and the node
  

[color=var(--color-text-primary)]Types of VPN, their advantages and disadvantages

A secure connection can be built on the basis of various protocols. Let's consider the most common of them, and analyze the pros and cons of each.