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// Network services

Port 4174: StorMagic Discovery

Port 4174 is assigned by IANA to sm-disc (StorMagic Discovery), smcluster (StorMagic Cluster Services).

4174

How sm-disc works

Network services
client:4174sm-discresponse client:4174sm-discresponse

The client sends a request to port 4174 and the sm-disc service answers.

Transport
UDP · TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Network services
01 Security

Is port 4174 dangerous?

We have no specific security note for port 4174. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 4174

ServicePortTransportDescriptionReferenceUpdated
sm-disc 4174 UDP StorMagic Discovery - 2011-12-16
smcluster 4174 TCP StorMagic Cluster Services - 2011-03-09

// source: IANA service name and port number registry

03 Check it

Which program uses port 4174, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4174'      # process listening on 4174
sudo lsof -nP -i :4174

macOS

sudo lsof -nP -i :4174

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4174 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4174
netstat -ano | findstr :4174

From another machine

nmap -p 4174 -sV <host>
sudo nmap -sU -p 4174 <host>
nc -zv <host> 4174

Block it in the firewall

sudo ufw deny 4174/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4174" -Direction Inbound -LocalPort 4174 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4174 used for?

Port 4174 is assigned by IANA to sm-disc (StorMagic Discovery), smcluster (StorMagic Cluster Services).

Is port 4174 TCP or UDP?

Port 4174 is registered for UDP and TCP.

Is it safe to open port 4174?

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. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 4174 is open?

On Linux run "ss -ltnup 'sport = :4174'", on macOS "lsof -nP -i :4174", and on Windows "netstat -ano | findstr :4174" to see the local process. From another machine, "nmap -p 4174 <host>" shows whether it is reachable.

05 Related
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk

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