CyberHunter
// Gaming

Port 5156: Russian Online Game

Port 5156 is assigned by IANA to rugameonline (Russian Online Game).

5156

How rugameonline works

Gaming
playergame serverposition, input, state × 60 / s playerserver60 updates / s

The game client and server exchange small updates many times per second over port 5156.

Transport
TCP
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
01 Security

Is port 5156 dangerous?

We have no specific security note for port 5156. Its risk depends on the program actually listening on it. General advice for gaming services:

  • Keep game servers and their plugins updated.
  • Rate-limit queries to limit DDoS amplification.
  • Run game servers under an unprivileged account.
02 Registry

IANA registry entries for port 5156

ServicePortTransportDescriptionReferenceUpdated
rugameonline 5156 TCP Russian Online Game - 2010-08-17
-5156-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5156, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5156'      # process listening on 5156
sudo lsof -nP -i :5156

macOS

sudo lsof -nP -i :5156

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5156 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5156
netstat -ano | findstr :5156

From another machine

nmap -p 5156 -sV <host>
nc -zv <host> 5156

Block it in the firewall

sudo ufw deny 5156/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5156" -Direction Inbound -LocalPort 5156 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5156 used for?

Port 5156 is assigned by IANA to rugameonline (Russian Online Game).

Is port 5156 TCP or UDP?

Port 5156 is registered for TCP.

Is it safe to open port 5156?

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 5156 is open?

On Linux run "ss -ltnup 'sport = :5156'", on macOS "lsof -nP -i :5156", and on Windows "netstat -ano | findstr :5156" to see the local process. From another machine, "nmap -p 5156 <host>" shows whether it is reachable.

05 Related