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+<!--startmeta
+custom_edit_url: "https://github.com/netdata/netdata/edit/master/src/collectors/proc.plugin/integrations/conntrack.md"
+meta_yaml: "https://github.com/netdata/netdata/edit/master/src/collectors/proc.plugin/metadata.yaml"
+sidebar_label: "Conntrack"
+learn_status: "Published"
+learn_rel_path: "Collecting Metrics/Linux Systems/Firewall"
+most_popular: False
+message: "DO NOT EDIT THIS FILE DIRECTLY, IT IS GENERATED BY THE COLLECTOR'S metadata.yaml FILE"
+endmeta-->
+
+# Conntrack
+
+
+<img src="https://netdata.cloud/img/firewall.svg" width="150"/>
+
+
+Plugin: proc.plugin
+Module: /proc/net/stat/nf_conntrack
+
+<img src="https://img.shields.io/badge/maintained%20by-Netdata-%2300ab44" />
+
+## Overview
+
+This integration monitors the connection tracking mechanism of Netfilter in the Linux Kernel.
+
+
+
+This collector is supported on all platforms.
+
+This collector supports collecting metrics from multiple instances of this integration, including remote instances.
+
+
+### Default Behavior
+
+#### Auto-Detection
+
+This integration doesn't support auto-detection.
+
+#### 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 Conntrack instance
+
+
+
+This scope has no labels.
+
+Metrics:
+
+| Metric | Dimensions | Unit |
+|:------|:----------|:----|
+| netfilter.conntrack_sockets | connections | active connections |
+| netfilter.conntrack_new | new, ignore, invalid | connections/s |
+| netfilter.conntrack_changes | inserted, deleted, delete_list | changes/s |
+| netfilter.conntrack_expect | created, deleted, new | expectations/s |
+| netfilter.conntrack_search | searched, restarted, found | searches/s |
+| netfilter.conntrack_errors | icmp_error, error_failed, drop, early_drop | events/s |
+
+
+
+## Alerts
+
+
+The following alerts are available:
+
+| Alert name  | On metric | Description |
+|:------------|:----------|:------------|
+| [ netfilter_conntrack_full ](https://github.com/netdata/netdata/blob/master/src/health/health.d/netfilter.conf) | netfilter.conntrack_sockets | netfilter connection tracker table size utilization |
+
+
+## Setup
+
+### Prerequisites
+
+No action required.
+
+### Configuration
+
+#### File
+
+There is no configuration file.
+#### Options
+
+
+
+There are no configuration options.
+
+#### Examples
+There are no configuration examples.
+
+