Recently, my colleague reported that during the NSLookup test on the Intranet, I found that when I used the Intranet DNS server 192.168.1.1 for resolution, the DNS server responded very quickly and did not
Any errors. However, when the DMZ server 51.
Refer: http://www.renhaibo.com/archives/29.html
We are familiar with the ping command. It is a command for checking network conditions. When the input parameter is a domain name, it will be queried through DNS, however, only records a and cname (
read the basic requirements of this article:1. The use of the cmd command has a certain basis2. The basic principles of DNS and common concepts have a certain understanding, such as host, alias, forward lookup zone, reverse lookup zone, and so on.3.
For details about dns settings in linux-Linux Enterprise Application-Linux server application, see the following. ① Introduction
DNS is the Domain Name System, which can convert a Domain Name such as www.21php.com to an IP address such as 211.152.50.
What should I do if my website is hijacked?
Whether the domain name is walled.
How to detect DNS pollution. Website hijacking Detection
Website opening speed detection.
Checks whether a website is hacked, hacked, changed its title, or hacked.
I
NSLookup
-Qt = mx
Email server IP address or domain name
The domain name or IP address of the specified DNS server.
Usage:Query IP addresses
The simplest use of NSLookup is to query the IP address corresponding to the domain name, including the
Create a DNS server on Linux-Linux Enterprise Application-Linux server application information. For more information, see. I. Assumptions
Many DNS articles start with the DNS principle. From the perspective of my use, I will provide some simple and
1. install the software packages dig and nslookup. Centos: # yuminstallbind-utilsDebian: # apt-getupdate # apt-getinstalldnsutils set the dns server IP address in/etc/resolv. conf before querying. II. usage
1. install the software packageInstall
What is DNS
Domain Name System (DNS) is an English abbreviation of "Domain Name System". It is a computer and network service naming System organized into a Domain hierarchy. It is used for TCP/IP networks, it is mainly used to replace the boring
Passive Information collectionFeatures:Based on open channelNo direct contact with the targetAvoid leaving all traces.Standard Reference--osint:U.S. militaryNorth Atlantic Treaty Organization noun explanationdns--domain Name System domain Name
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