check website dns propagation

From the 07 of the Estonian DDoS information war, to this year Guangxi Nanning 30 internet cafes suffered from DDoS ransomware, and then to the Sina network suffered a DDoS attack can not provide external services for more than 500 minutes. DDoS

Computer network Summary Note (I) this log will be summarized in the fourth edition of "Computer Network-top-down method and Internet features. Because the original book is in English, this summary may be very slow. Or enable the reserved bit first.

Regardless of the network, we must pay attention to security issues. The current IPv4 network has many security vulnerabilities and various attacks. These are the reasons for IPv6 implementation. Here we will give you a detailed description of some

With the development of the Internet, it has been deeply in all aspects of people's lives, it can be said that we are inseparable from the Internet. In the face of human dependence, Internet security is increasingly important, personal privacy is

(1) What is a "zombie" computer?The so-called "zombie" computer is simply a computer remotely controlled by others. When your computer is controlled by others, it is like the meat on the chopping board of others. what others want to eat is what they

# About Kong# # BackgroundWhen we provide API or microservices, we usually use openresty nginx for traffic forwarding or adding some rules or functions, but as the number of services and references increase, complex network environment,Making

Overview iptables overview iptables basic iptables syntax iptables instance case description Firewall Overview firewall refers to a combination of components set between different networks or network security domains, it enhances the security of the

Firewall refers to a combination of components set between different networks or network security domains, which enhances the security of the internal network of the organization. It uses the access control mechanism to determine which internal

Linux under Iptables configuration detailed-A rh-firewall-1-input-p tcp-m State--state new-m TCP--dport 24000-j ACCEPT-A rh-firewall-1-input-s 121.10.120.24-p tcp-m tcp--dport 18612-j ACCEPTIf your iptables basic knowledge is not yet known, it is

Last week, the company found the downadup. B Worm (also called Conficker ). After analyzing the computer with viruses, the computer room summarizes the following verifiable features: · Create a registry key:HKEY_CURRENT_USER \ Software \ Microsoft