authoritative dns server

; NSLookup Default Server: DNS. DG Address: 192.168.1.1 > Www.netadmin.com.cn Server: DNS. DG Address: 192.168.1.1 Non-Authoritative Answer: Name: www.365master.com Address: 219.141.209.244 Aliases: www.netadmin.com.cn > Server 51

(subdomain) does not know the presence of the ancestor (the parent domain) (so the resolution of the subdomain is iterated from the root layer)We can also enable subdomains to parse the parent domain by forwarding+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++DNS Name Resolution forwarder:(1) When a local DNS server (also a

Before you build a DNS server, introduce the terminology in several DNS 1, forward lookup zone: mapping for Computer name to IP address. When a DNS client initiates a request to a DNS server to resolve the IP address of a compute

compile and install #/Usr/local/named/sbin/rndc-confgen>/usr/local/named/etc/rndc. conf generate the key file of the rndc control command # Tail-10/usr/local/named/etc/rndc. conf | head-9 | sed s/# \ // g>/usr/local/named/etc/named. conf from rndc. extract named. key used by conf # Vi/usr/local/named/etc/named. conf edit named. conf Add the following content to named. conf: # Specify the resource file storage path and pid file name. Options { Directory "/usr/local/named/

Pre-Erection Preparation:To set up a DNS server, you must install a software program that provides a DNS service, the BIND software, that can be installed using the following command:Yum install-y bind-chroot Bind-utis 1. Modify the master configuration file/etc/named.confThis server is relatively simple to set

——————————————————————————————————————Official/Authoritative DNS: At least one DNS zone is requiredCache/First DNS: Do not need to be responsible for any DNS zones, for client queries[[email protected] named]# dig @ server address

"Experimental description"Experimental environment: Add a server ns2.test.com, IP 192.168.0.112;Experimental purpose: The new server is configured to 192.168.0.111 this primary DNS server from the DNS server;" conditions for imple

1. view the Host IP address resolved by the DNS host name Host CommandPurposeResolve a host name to an Internet address or an Internet address to a host name.SyntaxHost [-n [-a] [-c Class] [-d] [-r] [-t Type] [-v] [-w] [-z] Hostname | Address [Server]Hostnew [-a] [-c Class] [-d] [-r] [-t Type] [-v] [-w] [-z] Hostname | Address [Server]DescriptionThe/usr/bin/host

own hierarchical management system.Like the file system structure, the top-down tree hierarchyThe top is the root node domain name resolution server... Com. net. org. cn. TWTop-level domain name country domain nameIBM. | hp. TechBytesWWWFor example, if IBM has a host named WWW, its name will go from low to high.Www. IB,. com.Www.tech.ibm.com.Generally, it can be divided into 63 domain names, and each segment can contain up to 127 domain names.General

DNS servers. This makes it impossible for users to use your public DNS server to resolve other domain names. Increased security by reducing the risk associated with running a public DNS resolver, including cache poisoning. 4. Use DNS Resolver A

Install and configure the DNS server in linux, and configure the dns server in linux 1. DNS concept: Simply put, DNS is a service on the system that uses port 53 to provide mutual conversion between domain names and IP addresses

(127.0.0.1)/var/named/name.local-localhost reverse Domain Name resolution file-for converting 127.0.01 to localhost/var/named/name2ip.conf-a forward resolution file in the user's configuration area-a zone file used to map the host name to an IP address/var/named/2ipname.conf-the User Configuration area's orientation resolution file-a zone file used to map IP addresses to host names Third, install the BIND domain name server Software#yum Install bind

one primary zone, but we can create multiple secondary zones for this primary zone. A stub zone is a copy of a zone that contains only those resource records that are required to identify the authoritative domain Name System (DNS) servers for that zone. Stub zones are used to resolve names between separate DNS namespaces. This type of parsing may be necessary i

Build a DNS server in Linux and a dns server in linuxSystem Environment: CentOS 6.5 miniIP Address: 192.168.100.1001. Install related software packages# Yum install-y bind * caching-nameserver2. Open firewall ports# Vi/etc/sysconfig/iptables-AINPUT-m state -- state NEW-m tcp-p tcp -- dport 53-j ACCEPT-AINPUT-m state --

PowerDNS Authoritative Server Denial of Service Vulnerability (CVE-2015-5311)PowerDNS Authoritative Server Denial of Service Vulnerability (CVE-2015-5311) Release date:Updated on:Affected Systems: PowerDNS Authoritative Server 3

DNS domain Name service and build cache DNS server detailed (2)1.DNS Service Installation: BIND, full name is Berkeley Internet name Domain, this software is maintained by ISC/etc/named.conf: The main function is to define the working properties and areas of the bind process/etc/rndc.key: Full name Remote name Domain C

DNS is the basic service of the internet, and bind is the most popular open-source DNS software. Because it is very popular, it is very aggressive. Therefore, we need to build a secure DNS server. There are several measures to build a secure DNS Service (for basic bind compi