The information in this page is updated in accordance with firmware version TRB2_R_00.07.03.4.
The DNS page is used to to set up how the device utilizes its own and other DNS servers.
This manual page provides an overview of the DNS windows in TRB255 devices.
If you're having trouble finding this page or some of the parameters described here on your device's WebUI, you should turn on "Advanced WebUI" mode. You can do that by clicking the "Basic" button under "Mode", which is located at the top-right corner of the WebUI.
The General Settings section is used to set up the main DNS parameters. Refer to the table below for information on each configuration field.
|Log queries||off | on; default: off||When enabled, write received DNS requests to syslog.|
|DNS forwardings||string; default: none||List of DNS servers to forward requests to.|
|Rebind protection||off | on; default: on||Discards upstream RFC1918 responses. When enabled, the device will not resolve domain names for internal hosts.|
|Local Service Only||off | on; default: off||Limit DNS service to subnets and interfaces on which this device is serving as a DNS server.|
|Listen Interfaces||network interface(s); default: none||Limits listening for DNS queries to interfaces specified in this field and loopback. Leave empty to listen on all interfaces.|
|Exclude Interfaces||network interface(s); default: none||Prevents listening for DNS queries on interfaces specified in this field. Leave empty to listen on all interfaces.|
The Advanced Settings section is used to set up some of the more specific DNS parameters. Refer to the table below for information on each configuration field.
|Filter private||off | on; default: on||Do not forward reverse lookups for local networks.|
|Localise queries||off | on; default: on||Localise hostname depending on the requesting subnet if multiple IPs are available.|
|Additional servers file||text file; default: none||Uploads an additional DNS servers file. This file may contain lines like 'server=/domain/18.104.22.168' or 'server=22.214.171.124' for domain-specific or full upstream DNS servers.|
|Size of DNS query cache||integer [0..10000]; default: none||Number of cached DNS entries. Set to 0 for no caching.|