Digi LR54 User Manual page 892

Firewall
a. On the menu, click System. Under Configuration, click Device Configuration.
The Configuration window is displayed.
3. Click Firewall > Web filtering service.
4. Click Enable web filtering to enable.
5. For Web filtering service, select Manual.
6. Click to expand Servers.
7. Click  to add a server.
8. For IP address, enter the IP address of the DNS server.
9. (Optional) Repeat for additional DNS servers.
10. Click Apply to save the configuration and apply the change.
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Command line
LR54 User Guide
Web filtering
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