Settings

This page displays information and settings related to the amount of system resources used by DNS activity.

Status

This section displays the following information:

• Number of recursive queries: The current number of recursive queries handled by Synology Router. The maximum number of recursive queries can be modified below.
• TCP connections: The current number of TCP connections used for DNS queries.

Settings

You can customize the amount of system resources used by DNS activity according to your individual environment.

To edit settings:

You can modify the following settings here:

• Maximum log size: Choose maximum size for log files. Maximum log size can be set from 1 to 2147483647.
• Maximum cache size: Choose how much cache can be used by DNS activity. Normally, each resource record is saved to cache until its TTL (Time-to-live) expires. However, when the maximum cache size is reached, the system deletes the least recently used resource records in cache. If the maximum cache size is set to 0, each resource record remains in cache until its TTL expires. Settings lower than 2 MB are considered 2 MB. When multiple views exist, the cache limit of each view equals the limit specified here. Maximum cache size can be set from 0 to 4095 (MB).
• Maximum cache TTL (Time-to-live): Each resource record is deleted from cache when its TTL expires. The maximum cache TTL can be set from 1 to 4294967295 (seconds).
• Maximum number of recursive clients: Choose how many clients can make recursive requests through Synology Router. The maximum number of recursive clients can be set from 1 to 2147483647.
• Maximum number of TCP connections: Zone transfers and some queries use TCP connections. The maximum number of TCP connections can be set from 1 to 2147483647.

After modifying settings, click OK to save.