Go NTP Logger

This tool is intended to be used as a packet logger to be used in conjunction with a preferred NTP server instance. You can use this for filtering NTP packets received from desired IP address ranges.

Setup

1. Clone this repo
2. Install and configure dependencies
   • Option 1: run setup.sh which installs golang, libpcap-dev. chrony, and tmux, activates the chronyd service, and sets up a tmux session
   • Option 2: install golang, libpcap-dev, an NTP service, and a terminal multiplexer of your choice
3. Specify the identifier and the network interface of the machine in config/config.go
4. Add a text file (e.g. prefixes.txt) consisting of IP prefixes desired to be logged
5. Run sudo su
6. Run go run .
7. Detach from the terminal multiplexer (e.g. tmux)
8. See the pcap files in the output folder (pcap files are rotated every midnight)