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NE20E-S V800R010C10SPC500 Feature Description - Basic Configurations 01

This is NE20E-S V800R010C10SPC500 Feature Description - Basic Configurations
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview of SSH

Overview of SSH

Telnet access is not secure because there is no authentication method and the data transmitted across Transmission Control Protocol (TCP) connections is in plaintext. As a result, the system is vulnerable to denial of service (DoS), IP address spoofing, and route spoofing attacks.

As network security becomes more and more critical, using Telnet and File Transfer Protocol (FTP) to transmit passwords and data in plaintext proves to be more and more vulnerable. Secure Shell (SSH) resolves this issue. SSH encrypts the transmitted data to provide networks with security services and therefore ensures security during remote login.

SSH exchanges data using TCP. It builds a secure channel over TCP. In addition to the standard port (port 22), SSH supports access from other service ports to prevent unauthorized access.

NOTE:
  • SSH has three versions: SSH1.0, SSH1.5, and SSH2.0. The NE20E implements SSH2.0 that features backward compatibility.

  • Unless specified otherwise, SSH in this document refers to SSH2.0.

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Updated: 2019-01-03

Document ID: EDOC1100055117

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