D-Link DSR-250N User Manual page 17

Unified Services Router

Lease Time: Enter the time, in hours, for which IP addresses are leased to
clients.

Enable DNS Proxy: To enable the router to act as a proxy for all DNS
requests and communicate with the ISP's DNS servers, click the checkbox.
3.
Click Save Settings to apply all changes.
Fig ure 1: Setup pag e fo r LAN TCP/I P set tings
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User Manual