t420 ports

8 configurations of stm32 Io ports 1 Input and Output pins of stm32 have the following eight possible configurations: (4 input + 2 output + 2 reuse output) ① Float _ in_floating ② Pull input _ IPU ③ Drop-down input _ IPD ④ Simulation input _ Ain ⑤ Open-drain output _ out_od ⑥ Push and pull out_pp 7. push-pull output of the reuse function _ af_pp Drain output of the reuse function of the queue _ af_od In the output mode of the 1.1 I/O port, three outp

1. IP Security Policy This policy can be very complex. Go to "start"-(Control Panel)-"Administrative Tools"-"Local Security Policy" and find "IP Security Policy" in the left-side directory tree, on the local computer, click Create IP Security Policy in the blank area on the right, enter the Policy Name, next, remove "Activate XXX", check and remove, and next. Use the "add wizard" in the property to check and remove it. Click "add" (actually add an IP Security rule). You can add

Linux socket uses a 16-bit unsigned integer to indicate the port number. The maximum value is 65535. There is a classic misunderstanding about the port number. Because the port number is limited, a client can establish a maximum of 65536 socket connections, but this is not the case. The port can be reused. A socket connection is a four-tuple consisting of [srcip, srcport, destip, destport]. If the Protocol (TCP, UDP, rawsocket, etc.) is a quintuple, In this four-tuple, as long as one element is

How to check and use serial ports under Linux How do I check and configure serial ports under Linux for various purposes such as modem, null ing nullModems or connect a dumb terminal?Linux offers various tools. Linux uses ttysx for a serial port device name. For example, COM1 (DOS/Windows Name) is ttys0, com2 is ttys1 and so on.Task: Display detected system's serial support Simple run dmesg command$ dmesg

Execute shell commands in the program to automatically obtain all online IP addresses and open ports in the LAN (Linux)Preface The question is a bit long. It is actually the following: first, let the Shell command be executed in the program, and then pass the execution result to the variable, so that subsequent transactions can be processed, the second is to use the nmap command to obtain all the online IP addresses and open

8080,tomcat app using 8090), and each server farm sets the URL rewrite routing rules rule, The rules are forwarded to different serverfarm processing according to the different access URLs.Scenario one uses a different domain name to accessAn app domain name under IIS is Www.iisproject.com, and one of the app domain names under Tomcat is www.tomcatproject.com.Routing rules used by Iisfarm.According to the settings, only HTTP requests for 80 ports und

Completely solve the problem of insufficient TCP client ports [problem] when making large concurrent performance calls at www.2cto.com, we often encounter a problem: the client port is exhausted. [Cause] after analysis, the main cause is that there will be a timewait time after the connection is disconnected and the socket ,... Completely solve the problem of insufficient TCP client ports [problem] when mak

View port To view the port in Windows 2000/XP/Server 2003, run the netstat command: Click Start> Run, type cmd, and press enter to open the Command Prompt window. Type "netstat-a-n" in the command prompt. Press the Enter key to view the TCP and UDP connection port numbers and statuses displayed in numbers. TIPS: netstat command usageCommand Format: netstat-a-e-n-o-s -A indicates that all active TCP connections and TCP and UDP ports listened by th

Resolve Chorme Error 312 (net::err_unsafe_port) issuesIn the development, sometimes we will give Tomcat and so on some special access ports, such as 8888,66666,99999 and so onIf accessed with Chorme, the error will be as follows: The current solution is:Add this string to your Chorme shortcut--explicitly-allowed-ports=xxxXXXX is your port number.For example, if you want to turn on the 8888 port number, the

A description of the application scenarioDo you have this? A requirement: The number of ports used by Java programs on many servers is compared with the normal values.You can use the following command to get the result:Netstat-tulnp|grep java|wc-lBut a lot of servers, each manual to execute this command is not realistic. So think of using ansible batch to execute, ansible use Paramiko to SSH login server execute command, and use mutilprocessing to imp

Under Linux, by default 1024 of the following ports are to be used under the root, under other users, if the attempt to use will be an error. At some point, we may consider that the program runs under the root account, but this may pose a security risk to the Linux system. How is it possible for a non-root user to enable a program that is less than 1024 open to the outside?This article attempts to give some methods:The first method: SetUIDGiving the u

Introduction: In a Linux server, it is often necessary to see whether certain ports on the system are open properly, or to know which processes occupy a particular port service, so this command is very common, and this article describes the common methods of these commands.1. See if a particular port is turned on or occupiedList all the TCP connections in the Listening state:Command parsing:-l list all listening p