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Allows your DNS server to know which IP addresses are associated with which computers in //your network.
Requires that your DNS server support DDNS (Dynamic DNS) //none: to disable dynamic DNS updates or DNS is not supporting DDNS.
server1 IN A 192.168.122.200 Lets’s “decipher” these entries @ means this zone SOA: The SOA record stores information about the name of the server that supplied the data for the zone root.
(don’t forget period at the end) is mail address resposibile person for zone (although it dosen’t seems as e-mail address),remeber @ means “this zone in this case 🙂 2015052601 is serial zone number.
# Hosts for which fixed IP addresses have been specified can boot using # BOOTP or DHCP.
Hosts for which no fixed address is specified can only # be booted with DHCP, unless there is an address range on the subnet # to which a BOOTP client is connected which has the dynamic-bootp flag # set.
log-facility local7; # No service will be given on this subnet, but declaring it helps the # DHCP server to understand the network topology.
#subnet 10.152.187.0 netmask 255.255.255.0 # This is a very basic subnet declaration.
#subnet 10.254.239.32 netmask 255.255.255.224 # A slightly different configuration for an internal subnet.Install packages: Then edit /etc/file acl “allowed” ; options ; logging ; zone “.” IN ; include “/etc/named.rfc1912.zones”; include “/etc/key”; zone “122.168.192.in-addr.arpa” IN ; zone “example.com” IN ; check config files for typo errors: of course,at this moment it’ll throw errors that files and reverse.db cannot be found,they don’t exist (yet). Template zone file is located at /usr/share/doc/bind-9.9.4/sample/var/named/named.localhost we can use it as a template for our zone files.Copy that file to /var/named/chroot/etc/named/ and save as db open db file in your favorite text editor and start editing: @ IN SOA server1. ( 2015052601 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum @ IN NS server1.This secret key will be used to authenticate our dns update clients with the dns server. option domain-name “example.com”; option domain-name-servers 192.168.122.200; default-lease-time 600; max-lease-time 7200; # Use this to enble / disable dynamic dns updates globally.First,generate the key: [[email protected] dhcpd]#dnssec-keygen -a hmac-md5 -b 128 -n USER dhcpupdate Kdhcpupdate. ddns-update-style interim; //interim: allows your DHCP server to update a DNS server whenever it hands //out a lease.
#ddns-update-style none; # If this DHCP server is the official DHCP server for the local # network, the authoritative directive should be uncommented.