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Knowledge Center

Resolution

You can enable resolution services to allow Synology Router to resolve recursive queries. A recursive query occurs when Synology Router is not authoritative for a requested domain. In this case, Synology Router queries other domain name servers until the information is found, or until the query fails.

For example, if a client queries your Synology Router for the address of "synology.com," but your Synology Router is not authoritative for this domain (i.e. you do not own synology.com), it will query other domain name servers or forward the request to specified forwarder servers, and then relay the result back to the sender of the query.

Note:

  • If you are using Synology Router in Wireless AP mode with the DNS Server package installed, your Synology Router will not be found or accessed via router.synology.com.
  • If you only need Synology Router to perform authoritative server functions, we recommend keeping resolution services disabled in order to consume less system resources.
  • When you need to enable DNS Server and hot spot at the same time, please make sure the resolution service function of DNS Server is activated in order to allow hot spot clients to implement domain name resolution normally. If Limit source IP service is enabled, please confirm the IP address range for hot spot clients is included in the Source IP List.

To enable resolution services:

  1. Check the Enable resolution services box.
  2. Edit the following settings:
    • Limit source IP service: If this option is enabled, only hosts or subnets included on the Source IP List are allowed to make recursive queries through Synology Router.
    • Source IP List: Click here to specify which hosts or subnets are allowed to make recursive queries through Synology Router.
    • Enable forwarders: This option allows Synology Router to redirect recursive queries to forwarder servers, such as public DNS resolvers. Enabling forwarders can improve resolution time and consume less system resources.
    • Forwarders: Enter the IP addresses of forwarders into the Forwarder 1 and Forwarder 2 fields.
    • Forward policy: Select a policy for forwarding queries. If you select Forward First, Synology Router queries root servers when forwarders do not respond. If you select Don't query root servers, Synology Router does not resolve queries even if forwarders do not respond.
  3. Click OK to save settings.