namecheap basic dns

parsing process.Note: The premise of forwarding-the server that receives the forwarding request (this is the extranet DNS) must be able to do the recursive query for the requestor (here is the local DNS, also the forwarder);3, the type of forwarding:(1) Unconditional forwarding: Forward all requests for non-native area of resolution;#在主配置文件/etc/named.conf, add the following to the global options:Options {f

you have more than one NS server, each must have a corresponding NS record; For a forward parsing file, each NS FQDN should have an a record; ③mx:mail EXchanger name: Zone name Val UE: The FQDN of the mail server for example: @ in MX ten mail.magedu.com. @ in MX mail2.magedu.com. Note: If you have more than one MX server, each must have a corresponding MX record, but each MX record has a priority attribute (0-99) ④a:address Name:fqdn Value:ip For example: www.magedu.com. In A

master server's a record nsuploadserver172.25.254.101 (IP of the primary server) uploaddelete send KEY But there's a problem, That is, all IP 172.25.254.1 users can change the master server's a record, if others through manually change their IP, then get the permissions, it is not secure so we introduced key on the primary server to generate a public private key dnssec-keygen-aHMAC-MD5-b128-nHOSTlcdqqq View the file name of the generated public key by using LS, view the contents of the key

Article Title: beginners must understand the basic principles of DNS. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. We know that the host name can be used to identify a host or an IP address. People prefer to use host name i

Linux dns configuration and basic introduction! (GO) -- Linux Enterprise Application-Linux server application information. For details, refer to the following section. I. Basic DNS knowledge As we all know, in network communication, data links Use MAC addresses. The network layer uses IP addresses, and the transport la

Basic and advanced DNS configurations in CentOS How DNS servers work and functions DNS creates different regions in the network (a region represents the management set of resources to be named in the Network), and queries host names and addresses using a distributed data system. When you type the host name to be access

-only server), a primary server (Primary name server), and a secondary server (Second name server).DNS role:Forward parsing: Converting a domain name to a corresponding IP addressReverse resolution: Convert IP address to corresponding domain nameDomain Name resolution processRecursive multiple iterations at a timeDNS Usage port:TCP UDP NDS configuration file:/var/named/chroot/etc/named.conf # Master config file/var/named/chroot/var/named # zone file d

CentOS-5.6-x86_64-bin under the DNS installation Basics 1, installation ### remarks: SystemOS: CentOS-5.6-x86_64-bin-DVD-1of2 # yuminstall-ybindbind-chrootypbindbind-utils # rpm-qa | grepbindbind-libs-9.3.6-16... Basic DNS installation under CentOS-5.6-x86_64-bin1. Installation### Note: System OS: CentOS-5.6-x86_64-bin-DVD-1of2# Yum install-y bind-chroot ypbind b

. There's a point in the end that can't be omitted.The third step is to test the configuration file and parse the library file with or without errorsInspection Tools①named-checkconf: Checking the syntax and integrity of the configuration file②named-checkzone: Check the syntax and integrity of the zone resolution library fileUsage: named-checkzone zonename filenameFor example Named-checkzone zone name/var/named/zone_name.zone* * Step Fourth: Modify PermissionsChown Root:named/var/named/lishuai.co

LINUX basic network parameter DNS-Linux Enterprise Application-Linux server application information. For details, refer to the following section. DNS (Domain Name System), that is, the Domain Name System. In a TCP/IP network (such as the internet) environment, the main function of DNS is to convert a domain name into a

] [query options]parsing www.magedu.com [Email protected] named]# dig-t A www.magedu.com @172.16.249.17;Reverse parsing:Region name: Network address back write . In-addr.arpa.(1) define the areaZone "Zone_name" in {Type{master|slave|forward} ;file " Network Address . Zone "};Cases:Zone "1.16.172.in-addr.arpa" in {typemaster; File "192.168.zone";};(2) Zone Resolution library file Note: MX and A, as well as AAAA Records are not required; PTR record-oriented; $TTL 86400$origin1.16.172.in-addr.arp

Tags: net script exercises ISE sysconfig Red Hat Modify hang learningOne, the DNS configuration file 1, the configuration file explanation[Email protected] ~]# cat/etc/resolv.conf; Generated By/sbin/dhclient-scriptSearch LocaldomainNameServer 10.0.0.2 #---> Configure DNSConfigure DNS Priority 2 on the NIC, configure DNS Modify the

);　　Minimum NS ns.dns.com. 102PTR ns.dns.com. TenPTR www.dns.com. -PTR bbs.dns.com. [email protected] named]# named-checkzone200.168.192.inch-addr.arpa192.168. $. arpa Zone200.168.192.inch-addr.arpa/in:loaded serial0OK Restart the named service to verify the results:[email protected] named]# systemctl restart Named[[email protected] named]# nslookup192.168.200.10Server: :1Address ::1# - 　　 10.200.168.192.inch-addr.arpaname =www.dns.com. [email protected] named]# nslookup192.168.200.20Server: :

Basic DNS installation under CentOS-5.6-x86_64-bin1. Installation### Note: System OS: CentOS-5.6-x86_64-bin-DVD-1of2# Yum install-y bind-chroot ypbind bind-utils# Rpm-qa | grep bindBind-libs-9.3.6-16.P1.el5Bind-utils-9.3.6-16.P1.el5Ypbind-1.19-12.el5_6.1Bind-9.3.6-16.P1.el5Bind-chroot-9.3.6-16.P1.el5# Yum install-y caching-nameserver-9.3. * // you can start named after installation# Service named start# Net

/sysconfig/network-scripts/ifcfg-eth0Device=eth0 #网卡名称Bootproto=static #获取ip的方式 (STATIC/DHCP/BOOTP), not explainedhwaddr=00:0c:29:b5:b2:69 #MAC地址ipaddr=12.168.1.5 #IP地址netmask=255.255.255.0 #子网掩码network=192.168.1.0 #网络地址broadcast=192.168.0.255 #广播地址Nboot=yes #启动设备2. Modify the GatewayVim/etc/sysconfig/networkAdd a gateway Messagegateway=192.168.1.13. Modify DNSVim/etc/resolv.confAdd DNS information toNameServer 192.168.1.14. Reload the network configu

Expiration TimeNegative Answer TTLCache DNS Server: Cache only, no authoritative answerForwarders: Not cached, forward onlyA resource record RR (Resorce record) is placed inside the zone dataFormat of RR:TTL can be omitted when the complete definition isName TTL in RRT VALUEWww.baidu.com. In A 1.1.1.11.1.1.1 in PTR www.baidu.com.Resource record type: (RRT)SOA (Start of authority) indicates when the master and slave servers in the zone are synchronize

About BindThe most widely used DNS server software now is bind (Berkeley Internet Name Domain), which was first written by a student at Berkeley University, and now the latest version is 9, with ISC (Internet Systems Consortium) written and maintained.Bind supports most of the first operating systems (Linux,unix,mac,windows)The name of the bind service is called namedDNS by default using UDP, TCP protocol, using port is (domain), 953 (MDC, remote cont

/named.rfc1912.zonesCopy and paste line 37th to 42nd into line 43 and modify it to:Zone "254.25.172" in {The type master;The file "Lcdqqq.loopback";allow-update {none;};47};Vim/var/namedllCopy the Named.loopback to Lcdqqq.loopbackCp-p named.loopback Lcdqqq.loopback (-P: Full replication, even permissions copied)Enter the file to modify: (In this configuration file to the. End, otherwise auto-lcdqqq.com)@ in SOA dns.lcdqqq.com. Root.lcdqqq.com. (0; Serial1D; Refresh1H; Retry1W; Expire3H); Minimum