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My DHCP server can update the forward zone, but not the reverse.I found some references to issues with App Armour so I turned it off, but I still have the issue.(the other subnets are configed the same way) zone gilman.k12us. subnet 172.20.0.0 netmask 255.255.255.0 the reason it isn't 'authorising' (as the syslog says) is that you need to have a shared key that both bind (or your dns system) and dhcp-server (or your dhcp server) can share so that they can verify that they are asking each other to update each other.basically, you need to create an RNDC key and a assign that RNDC key updateable access from your pc.The second part is done by creating a domain object in the RIPE Database.If your DNS server is running Windows Server Core, you can create reverse lookup zones from the command-line by using the DNSCMD command.This process is also known as forward DNS resolution. It is rooted in the Address and Routing Parameter Area (arpa) top-level domain of the Internet.Reverse DNS (r DNS) is the inverse process of this: the resolution of an IP address to its designated domain name. One level below the arpa root are the delegated servers for IPv4 and ip6for IPv6.
Reverse DNS is typically not as critical in as forward DNS - visitors will still reach your web-site just fine without any reverse DNS for your web-server IP or the visitor's IP.
As an example, you can use the following command to create a reverse lookup standard primary zone named .on a DNS server named SEA-SC4: dnscmd SEA-SC4 /zoneadd ./primary For more information on managing DNS servers running on Windows Server Core, see my book Windows Server 2008 Server Core Administrator's Pocket Consultant from Microsoft Press.
Mitch Tulloch is a well-known expert on Windows Server administration and cloud computing technologies.
While forward lookup zones are named using the FQDN of the domain to which the zone maps, reverse lookup zones are named using the following convention: .
For example, if the network ID for clients in the forward lookup zone is 1/24 (that is, 1.0 with subnet mask 255.255.255.0), then the reverse lookup zone usually is named .