---
title: Telegraf Documentation
description: Telegraf plugin for transforming metrics using Port Name Lookup
url: https://docs.influxdata.com/telegraf/v1/processor-plugins/port_name/
estimated_tokens: 917
product: Telegraf
version: v1
---

-   Telegraf v1.15.0+

# Port Name Lookup Processor Plugin

This plugin allows converting a tag or field containing a well-known port, either a number (e.g. `80`) for TCP ports or a port and protocol (e.g. `443/tcp`), to the registered service name.

**Introduced in:** Telegraf v1.15.0 **Tags:** annotation **OS support:** all

## Global configuration options

Plugins support additional global and plugin configuration settings for tasks such as modifying metrics, tags, and fields, creating aliases, and configuring plugin ordering. See [CONFIGURATION.md](/telegraf/v1/configuration/#plugins) for more details.

## Configuration

```toml
# Given a tag/field of a TCP or UDP port number, add a tag/field of the service name looked up in the system services file
[[processors.port_name]]
  ## Name of tag holding the port number
  # tag = "port"
  ## Or name of the field holding the port number
  # field = "port"

  ## Name of output tag or field (depending on the source) where service name will be added
  # dest = "service"

  ## Default tcp or udp
  # default_protocol = "tcp"

  ## Tag containing the protocol (tcp or udp, case-insensitive)
  # protocol_tag = "proto"

  ## Field containing the protocol (tcp or udp, case-insensitive)
  # protocol_field = "proto"
```

## Example

```diff
- measurement,port=80 field=123 1560540094000000000
+ measurement,port=80,service=http field=123 1560540094000000000

```

#### Related

-   [Configure plugins](/telegraf/v1/configure_plugins/)
-   [Port Name Lookup Plugin Source](https://github.com/influxdata/telegraf/tree/v1.38.4/plugins/processors/port_name/README.md)