Question 1: How to query the IP port of the intranet? Different programs open different ports. For example, IE browser is 80, telnet is 23, pplive or electric donkey is random, such as 2255, 4042. With the tool x-scan, you can scan your own host (the default ip is 127.0.0. 1), and the scanned information includes the ip of your own intranet and the ports opened by various programs. In the case of knowing the ports of various programs accessing the network, this is also a way to manually check whether you have a Trojan horse, because you can see the ports opened by programs you don't want.

Question 2: How do I check the intranet IP and port of my computer? 1, click Start, run, enter CMD, and click OK.

2. Enter ipconfig /all at the DOS command line, check the IP address and see your own IP address.

3. Do the same operation on other computers and you can see the IP address of each computer.

* If the IP address is DHCP, you may get a different IP address every time you start.

Question 3: How to check the router's intranet IP and port forwarding rules? Virtual server?

Baidu Experience: "Setting the Router" jingyan.baidu/season/49960

Question 4: How to check the IP port of this machine? I don't know whether it's an intranet or an extranet. Please see the supplement. Start in 20 minutes, run, enter cmd, enter ipconfig, and all come out.

Question 5: Know how the ip and port of the other party intrude into the LAN. If you dial the Internet separately, their ip can be disconnected. You must first understand the problem of "local area network". There are two conditions for the composition of a local area network: 1. Physical connection 2. Software protocols, such as 1. There are 10 people connected to a switch in your building, and then connected to broadband dial-up internet access. They have their own ip segments, so they may not form a local area network, and can only be said to be "connected to the same switch". There are 65,438+00 computers in your building connected to a switch, and then connected to broadband dial-up Internet access. They also have their own ip segments (for example, the ip of each computer is set to 192. 168.438+0). * means 1-254), then you can form a local area network. The ip in the LAN is the same as the first three ip segments. No matter how it is set, it can be like this: there are five computers set to192.168.11. *. So this 10 computer constitutes two local area networks, so the ip is only set by yourself according to the actual needs, not to say that your fixed IP is the IP of ten computers in your local area network in 99.99.99.99.

Question 6: How to check the open network ports of this computer? Click "Start → Run" in turn, enter "cmd" and press enter to open the command prompt window. Type "netstat -a -n" at the command prompt, and then press Enter to view the port number and status of TCP and UDP connections displayed in digital form.

Network statistics-electronics -n -o -s-an

-a shows all active TCP connections and TCP and UDP ports that the computer listens to.

-e indicates the number of bytes and packets sent and received by Ethernet.

-n indicates that only the addresses and port numbers of all active TCP connections are displayed in digital form.

-o displays the active TCP connections, including the process ID(PID) of each connection.

-s indicates that statistics of various connections, including port numbers, are displayed by protocol.

-View all open ports

Question 7: How to use tcp to connect an intranet server that knows ip and port? Netstat can check it. Are there any other commands that can be established? For example, network debugging tools, if you have a special purpose, develop them yourself or find someone.

Question 8: What is an intranet port and how to view it? How to view local network ports:

The most common LAN is to share some folders or video files, which can easily make the hosts in our network communicate conveniently. Operating system is easy for us to achieve this purpose, but it is not very convenient to obtain all the host information and open ports in the LAN in detail. Therefore, we can easily obtain this information by using the tools here.

Step 1: Double-click to open the LAN viewing tool LanSee to enter the main interface.

Step 2: Click Tool Selection to set some necessary parameters, or you can use the default parameter configuration.

Step 3, set up the pop-up window interface, and we can add, delete and empty ports. After setting, click [Save button].

Step 4: Well, when we return to the main interface, we can click the [Start] button on the right to scan the port.

Fifth, in the process of port scanning, we will see the scanned IP address and port.

Step 6: if you need to check the information of the local adapter, click [network information]-> [adapter information].

Step 7, click [Network Information]-> [Utility], at this time, you can test some practical functions of the host in the network.

Knowing this information is very helpful for us to manage the whole LAN, and it is also a part of security management.

Question 9: How to test your computer port, or whether an IP port is open? Use the telnet command, or download the special software for telnet IP port from the Internet.

Question 10: What do you think of the intranet port under DOS, netstat -an?