OPNsense NTP

Using the NTP service on OPNsense to get local time, and then all devices on the network pull from OPNsense to sync time.

Time Servers:

  • us.pool.ntp.org
  • time.cloudflare.com
  • time.nist.gov

Settings:

OPNsense NTP Settings

DHCP Settings

DHCP option NTP servers set to LAN interface IP. This will provide NTP to the clients when they request IP address.

Firewall Rule

Since I want all my interfaces to use OPNsense for NTP, I create this floating rule.

  • IPv4 UDP
  • Action: Pass
  • Interface: Any
  • Source: Any
  • Destination: This Firewall
  • Destination Port NTP (123)
Danny Eckes
Danny Eckes

Welcome to my personal blog! This site is dedicated to my personal interests in IT, Photography, and Cooking. Running an IT homelab and needed a website for proof of concept and constant tinkering. I figured recipes would make good content. Let's face it, finding recipes online can be challenging! Between navigating past countless ads and lengthy superfluous instructions, it takes far too long to find the actual recipe. Posting recipes here for my quick reference. Hope you can find them useful as well. Pictures (taken with mobile) and instructions written for myself.

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