Adding upstream version 1.44.3.upstream/1.44.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+<!--startmeta
+custom_edit_url: "https://github.com/netdata/netdata/edit/master/collectors/nfacct.plugin/README.md"
+meta_yaml: "https://github.com/netdata/netdata/edit/master/collectors/nfacct.plugin/metadata.yaml"
+sidebar_label: "Netfilter"
+learn_status: "Published"
+learn_rel_path: "Data Collection/Linux Systems/Firewall"
+most_popular: False
+message: "DO NOT EDIT THIS FILE DIRECTLY, IT IS GENERATED BY THE COLLECTOR'S metadata.yaml FILE"
+endmeta-->
+
+# Netfilter
+
+
+<img src="https://netdata.cloud/img/netfilter.png" width="150"/>
+
+
+Plugin: nfacct.plugin
+Module: nfacct.plugin
+
+<img src="https://img.shields.io/badge/maintained%20by-Netdata-%2300ab44" />
+
+## 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:
+
+```ini
+[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](https://github.com/netdata/netdata/blob/master/docs/configure/nodes.md#the-netdata-config-directory).
+
+```bash
+cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
+sudo ./edit-config netdata.conf
+```
+#### Options
+
+
+
+<details><summary>Config options</summary>
+
+| Name | Description | Default | Required |
+|:----|:-----------|:-------|:--------:|
+| update every | Data collection frequency. | 1 | no |
+| command options | Additinal parameters for collector |  | no |
+
+</details>
+
+#### Examples
+There are no configuration examples.
+
+