What is port 17557 and what is port?

The ephemeral port is presumably a Trojan connection for hackers and the like.

Installing a firewall will do the trick.

1. Check the PID number of the process: check "PID" in "Task Manager" and "Selection Column".

2. Enter "netstat -ano|" in cmdfindstr PID number of a process to view the port occupied by the process;

Here, check the port number occupied by the svchost process

You can see that the port number occupied by the svchost process is port 135.

What is a port, you know this thing?

It is the outlet for communication between the equipment and the outside world.

Ports can be divided into virtual ports and physical ports, where virtual ports refer to ports inside a computer or a switch router and are invisible. The port types are:

1. Know-how ports, ranging from 0 to 1023, of which 80 ports are assigned to www services, 21 ports are allocated to ftp services, etc. We don't have to specify the port number when we enter a ** in the address bar of IE, because the port of the www service is "80" by default.

2. The dynamic port is from 49152 to 65535. It's called a dynamic port because it doesn't typically allocate a service fixedly, but rather dynamically.

3. Register port ports 1024 to 49151 and assign them to user processes or applications. These processes are mainly applications that the user chooses to install, rather than common programs that have been assigned a recognized port. When these ports are not occupied by server resources, they can be dynamically selected as the source ports by the client.

"port"It is a paraphrase of English port, which can be regarded as the outlet for communication between the equipment and the outside world. It refers to some registers in the interface circuit, which are used to store data information, control information and status information respectively, and the corresponding ports are called data ports, control ports and status ports respectively.

The system program running by the computer is actually like a closed circle, but the computer is for people, he needs to accept some instructions, and to adjust the system function according to the instructions to work, so the system programmer will cut this circle into many segments, these line interfaces are called ports (commonly speaking, breaks, that is, interrupts).

When the system runs to these ports, look at whether the port is open or closed, if it is closed, the rope is connected, the system runs down, if the port is open, the system gets the command, there is external data input, accepts external data and executes.

"port"It is the outlet for communication between the equipment and the outside world.

Ports are divided into virtual ports and physical ports. A virtual port is a port inside a computer or a switch router that is not visible. For example, port 80, port 21, port 23 in a computer, etc.

Physical ports are visible ports, RJ45 network ports on computer backplanes, RJ45 ports such as switches and router hubs.

In networking technology, the word "port" has several meanings. The ports of hubs, switches, and routers refer to the interfaces that connect to other network devices, such as RJ-45 ports and Serial ports.

The computer can be divided into two parts, hardware and software, the place where things can be inserted on the hardware can be called the interface, the most important thing in the software is the operating system, the windows we commonly use is the operating system, the operating system has many interfaces on the network, and these interfaces are called ports

There are generally the following ports shared by LAN.

Port,This is the port of RPC service,Useful port when sharing,This is the COM port,It's also related to NetBIOS.,This NetBIOS uses.,You can find the machine name in the sharing all by this.。

Generally, these service ports are open, and there is basically no problem with the corresponding services, and they can be shared.