Technical Tip: DNS reverse lookup when using FortiGate as a DNS server

[hbac]

Description	This article describes how to configure reverse lookup (pointer record) when using FortiGate as a DNS server.
Scope	FortiGate.
Solution	To be able to do reverse DNS lookup when using FortiGate as a DNS server, it is necessary to create PTR entries under Network -> DNS Servers -> DNS Database -> DNS Entries. In the below example, internal computers send DNS queries to port4 of the FortiGate.  An example of PTR entry.  With the above configuration, computers with port4 IP address as DNS server should be able to perform reverse lookup as follows: To configure in the CLI:  config system dns-database     edit "local"         config dns-entry             edit 1                 set type PTR                 set hostname "test"                 set ip 10.10.10.10             next         end Related article: Technical Tip: DNS conditional forwarding