Netfilter

Plugin: nfacct.plugin Module: nfacct.plugin

Overview

Monitor Netfilter metrics for optimal packet filtering and manipulation. Keep tabs on packet counts, dropped packets, and error rates to secure network operations.

Netdata uses libmnl (https://www.netfilter.org/projects/libmnl/index.html) to collect information.

This collector is supported on all platforms.

This collector supports collecting metrics from multiple instances of this integration, including remote instances.

This plugin needs setuid.

Default Behavior

Auto-Detection

This plugin uses socket to connect with netfilter to collect data

Limits

The default configuration for this integration does not impose any limits on data collection.

Performance Impact

The default configuration for this integration is not expected to impose a significant performance impact on the system.

Metrics

Metrics grouped by scope.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.

Per Netfilter instance

This scope has no labels.

Metrics:

Metric	Dimensions	Unit
netfilter.netlink_new	new, ignore, invalid	connections/s
netfilter.netlink_changes	insert, delete, delete_list	changes/s
netfilter.netlink_search	searched, search_restart, found	searches/s
netfilter.netlink_errors	icmp_error, insert_failed, drop, early_drop	events/s
netfilter.netlink_expect	created, deleted, new	expectations/s
netfilter.nfacct_packets	a dimension per nfacct object	packets/s
netfilter.nfacct_bytes	a dimension per nfacct object	kilobytes/s

Alerts

There are no alerts configured by default for this integration.

Setup

Prerequisites

Install required packages

Install libmnl-dev and libnetfilter-acct-dev using the package manager of your system.

Configuration

File

The configuration file name for this integration is netdata.conf. Configuration for this specific integration is located in the [plugin:nfacct] section within that file.

The file format is a modified INI syntax. The general structure is:

[section1]
    option1 = some value
    option2 = some other value

[section2]
    option3 = some third value

You can edit the configuration file using the edit-config script from the Netdata config directory.

cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config netdata.conf

Options

Config options

Name	Description	Default	Required
update every	Data collection frequency.	1	no
command options	Additinal parameters for collector		no

Examples

There are no configuration examples.