trace dns lookup

ConceptDefault dns lookup sequence for linux clients: Local DNS Cache → local hosts file → preferred DNS server (recursive) Linux DNS Server Query sequence:The DNS cache of the preferred server → the domain in which the preferred server is

DNS is one of the core Internet protocols. Whether it's surfing the web or programming, you need to know a little bit about it.This article describes in detail The principle of DNS and how to use the tool software to observe its operation. My goal

Website IntroductionWww.benet.com (host name fqdn:full qualified domain name, fully qualified domainname)There is a com,com domain below the domain that contains benet, and a host called www under the Benet domain.Early parsing using

When first joining the domain, the client makes general DNS and LDAP queries and gets a list of all the domain controllers In the domain, and it goes down the list, trying LDAP binds, and the first successful DC so it binds to-that is the F Irst DC

Predictive feature optimization for Chrome PredictorChrome will become faster as you use it. This feature is implemented by a singleton object predictor. This object is instantiated in the browser kernel process (Browser Kernel processes), and its

Netstat Command Overview:Netstat is a very useful tool for monitoring TCP/IP networks, which can display routing tables, actual TCP network connections, TCP and UDP snooping, process memory management, and status information for each network

When conducting a security penetration test, we first need to collect as much information as possible for the target application. Therefore, information collection is an essential step for penetration testing. This task can be completed in different

HTTP StatelessThe HTTP protocol is stateless (stateless). That is, when the same client accesses a page on the same server for the second time, the server cannot know that the client has visited and the server cannot distinguish between different

HTTP StatelessThe HTTP protocol is stateless (stateless). That is, when the same client accesses a page on the same server for the second time, the server cannot know that the client has visited and the server cannot distinguish between different

Here is a piece of dry goods on the 2cto.com, and I have compiled some useful tools according to these dry goods http://m.2cto.com/article/201309/245214.htmlA few simple steps from an attacker's perspective:1, to determine their goals, the goal can