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// Other services

Port 5146: Social Alarm Service

Port 5146 is assigned by IANA to social-alarm (Social Alarm Service).

5146

How social-alarm works

Other services
client:5146social-alarmresponse client:5146social-alarmresponse

The client sends a request to port 5146 and the social-alarm service answers.

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
Other services
01 Security

Is port 5146 dangerous?

We have no specific security note for port 5146. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 5146

ServicePortTransportDescriptionReferenceUpdated
social-alarm 5146 TCP Social Alarm Service - 2009-08-18
-5146-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5146, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5146'      # process listening on 5146
sudo lsof -nP -i :5146

macOS

sudo lsof -nP -i :5146

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5146 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5146
netstat -ano | findstr :5146

From another machine

nmap -p 5146 -sV <host>
nc -zv <host> 5146

Block it in the firewall

sudo ufw deny 5146/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5146" -Direction Inbound -LocalPort 5146 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5146 used for?

Port 5146 is assigned by IANA to social-alarm (Social Alarm Service).

Is port 5146 TCP or UDP?

Port 5146 is registered for TCP.

Is it safe to open port 5146?

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. Close the port if nothing on the host needs it.

How do I check if port 5146 is open?

On Linux run "ss -ltnup 'sport = :5146'", on macOS "lsof -nP -i :5146", and on Windows "netstat -ano | findstr :5146" to see the local process. From another machine, "nmap -p 5146 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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