It's a common task to search the default port number of a service. Some ports are available in the /etc/services file, but the list is not complete and this solution is not portable.
Whatportis is a simple tool that downloads the Iana.org database and uses it to explore the official list of ports.
Whatportis allows you to find what port is associated with a service:
$ whatportis redis
+-------+------+----------+---------------------------------------+
| Name | Port | Protocol | Description |
+-------+------+----------+---------------------------------------+
| redis | 6379 | tcp | An advanced key-value cache and store |
+-------+------+----------+---------------------------------------+Or, conversely, what service is associated with a port number:
$ whatportis 5432
+------------+------+----------+---------------------+
| Name | Port | Protocol | Description |
+------------+------+----------+---------------------+
| postgresql | 5432 | tcp, udp | PostgreSQL Database |
+------------+------+----------+---------------------+You can also search a pattern without knowing the exact name by adding the --like option:
$ whatportis mysql --like
+----------------+-------+----------+-----------------------------------+
| Name | Port | Protocol | Description |
+----------------+-------+----------+-----------------------------------+
| mysql-cluster | 1186 | tcp, udp | MySQL Cluster Manager |
| mysql-cm-agent | 1862 | tcp, udp | MySQL Cluster Manager Agent |
| mysql-im | 2273 | tcp, udp | MySQL Instance Manager |
| mysql | 3306 | tcp, udp | MySQL |
| mysql-proxy | 6446 | tcp, udp | MySQL Proxy |
| mysqlx | 33060 | tcp | MySQL Database Extended Interface |
+----------------+-------+----------+-----------------------------------+$ pip install whatportisWhatportis uses a local JSON file (~/.whatportis_db.json) to explore the list of ports. The first usage will create it for you, then you can use the --update option to synchronize it :
$ whatportis --update
Previous database will be updated, do you want to continue? [y/N]: y
Downloading https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv...
Populating database...
14145 ports imported.You can display the results as JSON, using the --json option :
$ whatportis 5432 --json
[
{
"name": "postgresql",
"port": "5432",
"protocol": "tcp, udp",
"description": "PostgreSQL Database"
}
]Whatportis can also be started as a RESTful API server. This feature is not enabled by default, you must install an extra package :
$ pip install whatportis[server]
$ whatportis --server localhost 8080
* Serving Flask app "whatportis.server" (lazy loading)
* Environment: prod
* Debug mode: off
* Running on http://127.0.0.1:8080/ (Press CTRL+C to quit)The endpoints are /ports for the whole list (can be long) and /ports/<search> to search a specific port :
$ curl http://127.0.0.1:8080/ports/3306
{"ports":[{"description":"MySQL","name":"mysql","port":"3306","protocol":"tcp, udp"}]}
$ curl http://localhost:8080/ports/redis
{"ports":[{"description":"An advanced key-value cache and store","name":"redis","port":"6379","protocol":"tcp"}]}You can use the ?like parameter to search a pattern.