Telnet Server Remote login process

We have analyzed the basic definitions of remote Telnet server login. You should have understood the basic meaning of remote logon to the Telnet server. Here we will explain some important processes. Hope to help you.

Remote Logon Process

When using the Telnet protocol for remote login, the following conditions must be met: the computer must have a client program containing the Telnet protocol; the IP address or domain name of the remote host must be known; the logon ID and password must be known.

The Telnet remote Logon Service consists of the following four processes:

1) establish a local connection with the remote host. In this process, a TCP connection is established. You must know the IP address or domain name of the remote host;

2) Transmit the username and password entered on the local Terminal and any commands or characters subsequently entered to the remote host in NVTNet Virtual Terminal format. In this process, an IP datagram is actually sent from the local host to the remote host;

3) convert the NVT format data output by the remote host to a local accepted format and send it back to the local terminal, including the command echo and command execution result;

4) Finally, the local terminal unconnects the remote host. This process revokes a TCP connection.

Telnet is a remote logon program. It consists of the Telnet client program running on the user's local computer client and the Telnet server program running on the remote computer server to be logged on. Client-installed client programs are client software that can send requests. Server-installed server programs can respond to login requests and all follow the same network terminal protocol.

With remote logon, you can access the resources of a remote host, just as you are an end user. However, you must have a full-function account username and password on the remote host ).

When accessing the Telnet server site, you need to use the following three items:

1. Telnet client address

Generally, this is the host address, and sometimes an IP address is used to indicate that the user has been connected to the Internet. If you are a dialup user, you can automatically obtain a dynamic IP address.

2. Port Number

Sometimes the user logs on to the Telnet server to process multiple Telnet conversations at the same time, the user can find the corresponding Telnet connection using the port.

3. Telnet outlet address

Telnet is a remote logon program. It consists of the Telnet client program running on the user's local computer and the Telnet service program running on the remote computer to log on.

Telnet enables users to log on to a host on the Internet using a simulated terminal. Once the connection is successful, these personal computers are like a terminal of a remote computer. You can run programs in a remote computer just like you can run your own computer.