# WHATPORT(8021)

## NAME

port 8021 — FreeSWITCH event socket; FTP proxy — FreeSWITCH's Event Socket — a text console that controls the whole telephony switch.

Protocol: TCP  
IANA: intu-ec-client

## DESCRIPTION

IANA registers 8021 to Intuit as intu-ec-client, but the port's real fame is FreeSWITCH: the stock `event_socket.conf.xml` sets `listen-port` to 8021, and mod_event_socket is how dialplan applications, click-to-call scripts and monitoring tools drive the switch. Nmap also records 8021 as a common FTP proxy port, a much older convention that pairs it with 21. On a VoIP host, assume FreeSWITCH.

## EXPOSURE

**Do not expose.** The Event Socket is full administrative control of the PBX — originate calls, read channel variables, reload configuration — behind a single password. It is meant for loopback or a tightly ACLed management network.

## CHECK

```sh
nc -vz -w 3 TARGET 8021
```

## SEE ALSO

- source — [signalwire/freeswitch — conf/vanilla/autoload_configs/event_socket.conf.xml (listen-port 8021)](https://github.com/signalwire/freeswitch/blob/master/conf/vanilla/autoload_configs/event_socket.conf.xml) (github.com)
- iana — [IANA Service Name and Transport Protocol Port Number Registry — 8021 (intu-ec-client)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=8021) (iana.org)

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