DNS proxy settings

You configure DNS proxies at the network dns proxy-settings level.

To edit DNS proxy settings, use the following command:

Admin@nodename# set network dns proxy-settings

Add the parameters you want to change:

Parameter

Description

filtering

DNS request filtering:

  • on

  • off

caching

Cache DNS responses:

  • on

  • off

limit

Limit the number of DNS queries per second for each user (default value: 100).

max-ttl

Maximum possible time-to-live for DNS records.

recursive

Perform recursive DNS queries:

  • on

  • off

dns-timeout

Time to the next attempt to query a DNS server (in milliseconds).

a-aaaa-unknown

Respond only to requests for A and AAAA records from unknown users. This effectively blocks attempts to establish a VPN over the DNS protocol:

  • on

  • off

retries

Number of attempts to send a DNS request.

factory-defaults

Reset the values of the selected parameter (parameters shown in this table) or all parameters (all) to factory defaults.

Example command to edit DNS-proxy parameters:

Admin@nodename# set network dns proxy-settings limit 10 dns-timeout 10

To display DNS proxy settings, use the following command:

Admin@nodename# show network dns proxy-settings