- Keep game servers and their plugins updated.
- Rate-limit queries to limit DDoS amplification.
- Run game servers under an unprivileged account.
Port 5687: GOG multiplayer game protocol
Port 5687 is assigned by IANA to gog-multiplayer (GOG multiplayer game protocol).
5687
How gog-multiplayer works
GamingThe game client and server exchange small updates many times per second over port 5687.
- Transport
- 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
- Gaming
Is port 5687 dangerous?
We have no specific security note for port 5687. Its risk depends on the program actually listening on it. General advice for gaming services:
IANA registry entries for port 5687
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| gog-multiplayer | 5687 | UDP | GOG multiplayer game protocol | - | 2014-10-09 |
| - | 5687 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 5687, and is it reachable?
Linux
sudo ss -ltnup 'sport = :5687' # process listening on 5687
sudo lsof -nP -i :5687macOS
sudo lsof -nP -i :5687
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5687 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 5687 netstat -ano | findstr :5687
From another machine
nmap -p 5687 -sV <host> sudo nmap -sU -p 5687 <host> nc -zv <host> 5687
Block it in the firewall
sudo ufw deny 5687/udp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 5687" -Direction Inbound -LocalPort 5687 -Protocol UDP -Action Block # Windows
What is port 5687 used for?
Port 5687 is assigned by IANA to gog-multiplayer (GOG multiplayer game protocol).
Is port 5687 TCP or UDP?
Port 5687 is registered for UDP.
Is it safe to open port 5687?
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. Keep game servers and their plugins updated.
How do I check if port 5687 is open?
On Linux run "ss -ltnup 'sport = :5687'", on macOS "lsof -nP -i :5687", and on Windows "netstat -ano | findstr :5687" to see the local process. From another machine, "nmap -p 5687 <host>" shows whether it is reachable.
Other gaming ports
:25565 Minecraft tcp · moderate risk :27015 Steam / Source engine udp · tcp · moderate risk :666 doom Id Software tcp · udp :1926 Evolution Game Server tcp · udp :2346 Game Connection Port tcp · udp :2347 Game Announcement and Location tcp · udp :2348 Information to query for game status tcp · udp :2914 Game Lobby tcp · udp