# Outside Tools

| from Pogo, by Walt Kelly

## 1. Related Links

### 1.1. Handbook Pages

- Command Index

- Access Control Support

- Association Management

- Authentication Support

- Automatic Server Discovery Schemes

- Rate Management

- Reference Clock Support

## 2. Table of Contents

- Introduction

- Wireshark

- Nagios

- Netdata

## 3. Introduction

Because NTP is a widely-used an well-established service, people who write tools for system administrators frequently have features and plugins designed to help you work with it. This page collects some references that may be useful.

## 4. Wireshark

The Wireshark protocol analyzer has support for displaying NTP packets with the fields broken out and interpreted.

## 5. Nagios

The Nagios monitoring suite has native support for querying NTP servers. The check_ntp_peer and check_ntp_time programs may be of particular interest.

## 6. Netdata

The Netdata monitoring solution has native support for realtime monitoring of ntpd, among a vast number of other system metrics.

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