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In theory, as long as the computer connected to the network can be accessed, but in practice, it is often difficult to achieve it because of the level of technology and other reasons.

For example, a computer in the local area network only opens the Web service, which can only be used by internal network users, but there is no way for external network users to access it directly.

Therefore, in order to enable external network users to access the system services in the local area network, port mapping and other operations must be carried out.

Port mapping is often used in * private network, especially when logging in to remote terminal services. It is very convenient to use port mapping.

Lcx.exe is a port forwarding tool, which is equivalent to forwarding port 3389 on host A to machine B with an external network IP address, so that port 3389 connected to machine B is equivalent to port 3389 connected to machine A.

The Lcx program is mostly used when the controlled computer is in the intranet, and the controlled computer may be in the * program. Although it can be controlled, it is still not convenient to log in to the machine using the remote terminal.

Therefore, in many cases, we will try to open port 3389 on the controlled computer, then forward the port through programs such as lcx, and then locally connect to the remote terminal of the controlled computer and manage and use it.

The topology is as follows:

Windows 2003-Windows Xp

2003 Analog controlled Terminal

Set 1

In XP

Lcx-listen 8000 3333

8000 is the forwarding port, and 3333 is any unoccupied port on the machine.

Set 2

At 2003

Lcx-slave 172.168.8.8 8000 127.0.0.1 3389

172.168.8.8 IP,8000 for xp is the forwarding port, 127.0.0.1 is the chicken intranet IP,3389 as the remote terminal port

Set 3

Finally, the remote desktop connection format on XP is

127.0.0.1:3333

If there is any mistake on the way, please contact me at QQ727536.

You can contact me if you don't understand.

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