9987/UDPTeamSpeak 3 (Voice)
Voice · Registered port · OSI layer 7
Voice port for a TeamSpeak 3 server. Voice traffic runs through it.
IANA: commonly used, but unofficial (registered as dsm-scm-target)
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Port 9987: Open the TeamSpeak 3 voice port
Port 9987 is the default voice port for a TeamSpeak 3 server and uses UDP. This tool shows you the port details and generates firewall commands for your TS3 server.
Built by Justin Schuessler
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Ports
Firewall rule (inbound)
Firewall commands
Open port
sudo ufw allow 9987/udpNotes on ufw
For Ubuntu and Debian. ufw creates the rule for both IPv4 and IPv6. If ufw is disabled, allow SSH first (sudo ufw allow 22/tcp), then enable it with sudo ufw enable, or you'll lock yourself out.
On a ZAP-Hosting VPS with an active network firewall, you also need to allow the port in the Customer Panel.
Port 9987 explained
What is port 9987 used for?
Purpose
TeamSpeak clients connect to a virtual server over UDP on port 9987 to transmit voice data. If a user enters only the server address without a port, the client automatically tries 9987. A TS3 server also uses other ports: TCP 30033 for file transfers such as icons and avatars, and TCP 10011 for ServerQuery, its text-based administration interface. If multiple virtual servers run on one instance, each gets its own voice port, usually 9988, 9989, and so on.
Origin and standard
TeamSpeak is developed by TeamSpeak Systems GmbH in Bavaria and has long been a staple of voice chat for gaming and communities. Port 9987 is not registered with IANA for TeamSpeak; the developer chose it unofficially as the default. It falls within the registered port range of 1024 to 49151. Ports 10011 and 30033 are also developer-defined defaults.
Typical use
- Voice traffic between TeamSpeak clients and the server
- Voice servers for gaming clans, communities, and teams
- Multiple virtual servers on one instance, each with its own voice port
- Works with port 30033 for files and 10011 for ServerQuery
Security
UDP 9987 and TCP 30033 must be open for users; otherwise, voice or icons and avatars won't work. ServerQuery on port 10011 transmits login credentials unencrypted and provides full control of the server, so don't expose this port to the internet. Allow access to 10011 only from your own IP or the system running your bots or tools. Also keep the ServerQuery admin password and Privilege Key from the first startup secure, and don't share them.
More ports
Related ports
These ports are often part of the same setup. Click one to see its explanation and firewall commands.
View all well-known ports and the complete IANA list
Port list source: IANA Service Name and Transport Protocol Port Number Registry, as of October 22, 2026. iana.org
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FAQ
Frequently asked questions
Quick answers about port 9987.
TeamSpeak 3's voice port 9987 uses UDP. You need TCP for file transfers on port 30033 and ServerQuery on port 10011. You don't need a TCP rule for port 9987.
For users, you need UDP 9987 for voice and TCP 30033 for files. Only administration tools and bots need ServerQuery on TCP 10011. With ufw, open the first two using sudo ufw allow 9987/udp and sudo ufw allow 30033/tcp.
Not to everyone. ServerQuery allows full server administration, and the connection is unencrypted. Allow access to the port only from your own IP or your bot system, for example with sudo ufw allow from 203.0.113.10 to any port 10011 proto tcp.
Usually, UDP 9987 is not allowed through the firewall, or the virtual server is running on a different port. Check the firewall rule for UDP and the voice port in the server configuration. If icons or avatars do not load, TCP 30033 usually needs to be allowed through the firewall.
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