how to unblock domain is blocked

Connection MySQL failed, in addition to the permissions issue, also encountered this situation, error message:Host XXX is blocked because of many connection errors, unblock with ' mysqladmin FL Ush-hosts '. and XXX is not the IP address but domain

Multithreading A simple procedure for running a task in a separate thread: 1. Define a class that implements the Runnable interface, and the task code is written in the Run method 2. Create an instance of the class 3. Pass this instance to the

The test server was not expected to be attacked, and no preventive measures were taken. The csf firewall is installed to cope with a small number of ddos and cc attacks. As mentioned in the previous blog, when the number of httpd requests is too

The csf firewall is installed to deal with a small number of ddos and cc attacks, which is quite useful. We have also used the TDS before. The following is a record of how I discovered the attack, and how to solve it.1. Adjusting apache connections

For the general Small and medium-sized enterprises, if you want to security management of the enterprise network, it is not necessarily expensive to buy professional firewall settings, directly with the operating system itself with the firewall

back-end applicationsThis is the actual application of user name and password input. You will add your business requirements primarily on this application. App folderThe back-end application is built into the private zone by default , called " App

21st Chapter Concurrency1. Defining tasksTask: A task is a piece of code to be executed by a thread of execution. (in C, a piece of code that starts at an address that the function pointer points to)"Memory Error": The task is not a thread, the

The test server was not expected to be attacked, and no preventive measures were taken. The csf firewall is installed to handle a small number of ddos and cc attacks, which is quite useful. We have also used the TDS before. For details, refer to the

As part of the MySQL tuning, many people recommend opening skip_name_resolve. This parameter prohibits domain name resolution (including, of course, hostname). Many children's shoes will be curious, what is the principle behind this, and when to

Processes and ThreadsTwo features of the process concept:　　Resource Ownership : A process consists of a virtual address space that holds the process image (including programs, data, stacks, and process control blocks). Processes have control over