- Use strong credentials and TLS for signalling.
- Rate-limit registrations to stop extension scanning and toll fraud.
- Alert on unexpected chat protocols leaving servers (possible command and control).
Port 1119: Battle.net Chat/Game Protocol
Port 1119 is assigned by IANA to bnetgame (Battle.net Chat/Game Protocol).
1119
How bnetgame works
Voice & chatPort 1119 sets up the call (who calls whom), then the voice travels as a stream of audio packets.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Voice & chat
Is port 1119 dangerous?
We have no specific security note for port 1119. Its risk depends on the program actually listening on it. General advice for voice & chat services:
IANA registry entries for port 1119
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| bnetgame | 1119 | TCP, UDP | Battle.net Chat/Game Protocol | - | - |
// source: IANA service name and port number registry
Which program uses port 1119, and is it reachable?
Linux
sudo ss -ltnup 'sport = :1119' # process listening on 1119
sudo lsof -nP -i :1119macOS
sudo lsof -nP -i :1119
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1119 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 1119 netstat -ano | findstr :1119
From another machine
nmap -p 1119 -sV <host> sudo nmap -sU -p 1119 <host> nc -zv <host> 1119
Block it in the firewall
sudo ufw deny 1119/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 1119" -Direction Inbound -LocalPort 1119 -Protocol TCP -Action Block # Windows
What is port 1119 used for?
Port 1119 is assigned by IANA to bnetgame (Battle.net Chat/Game Protocol).
Is port 1119 TCP or UDP?
Port 1119 is registered for TCP and UDP.
Is it safe to open port 1119?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Use strong credentials and TLS for signalling.
How do I check if port 1119 is open?
On Linux run "ss -ltnup 'sport = :1119'", on macOS "lsof -nP -i :1119", and on Windows "netstat -ano | findstr :1119" to see the local process. From another machine, "nmap -p 1119 <host>" shows whether it is reachable.