reverse dns ptr

1. What is DNS? (Domain Name System) domain name system. In fact, the functions implemented by DNS are very simple and effective, so that users do not need to remember the IP addresses that frequently access the server, you can directly access the

This morning the bean accidentally found that the company's DNS server above only the forward parsing, and there is no corresponding PTR record. In other words, the IP address can be resolved by the domain name, but the reverse IP address is not

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.

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

Spam in the flood of today, spam to our lives, work, learning has brought great harm. Because of the lack of effective authentication mechanism between SMTP servers, even if the use of spam identification blocking technology is still common, and the

Many people do not know how to resolve public domain names on their own DNS servers. Now let's announce the steps. 1. You must have your own domain name. Therefore, go to the domain name registrar to apply for a registered domain name. Try to find a

DNS ServiceDNS: Domain Nsme ServiceRole: Resolving the domain name to IP (forward parsing) or resolving IP to a domain name (reverse parsing)Classification of DNS top-level domains:Organization domain:. com. net. org .....Country domain:. CN. tw. JP

"The main content of this blog post" Introduction to bind server (including Introduction to Client Tools Dig) Configuring forward parsing DNS servers Configure Reverse resolution DNS server Configuring a secondary DNS server and

1. experiment environment 1.1 requirements Configure forward parsing bind Configure reverse resolution bind Configure bind of secondary DNS Implement regional transfer between primary and secondary DNS 1.2 Environmental Planning Primary DNS:

Http://yuelei.blog.51cto.com/202879/106921 Common DNS records (I)In the previous blog, we introduced the architecture of the DNS server, from which we learned that if we want to register a domain name, then, the domain name that we apply for must