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Port 4174 (smcluster, sm-disc)

IANA assigns port 4174 to smcluster, sm-disc: StorMagic Cluster Services.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
smcluster TCP StorMagic Cluster Services Chris Farey -
sm-disc UDP StorMagic Discovery StorMagic Ltd -

Registry dates for this port: registered 2011-03-09.

Check what is listening on port 4174

Linux: is anything listening on TCP 4174?
sudo ss -tlnp 'sport = :4174'
Linux: UDP 4174
sudo ss -ulnp 'sport = :4174'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4174
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4174 '
Windows (Command Prompt)
netstat -ano | findstr :4174
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4174 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4174
From Windows
Test-NetConnection HOST -Port 4174
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4174

Block port 4174 in the firewall

ufw
sudo ufw deny 4174/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4174 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4174 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4174' -Direction Inbound -Protocol TCP -LocalPort 4174 -Action Block
ufw
sudo ufw deny 4174/udp
iptables
sudo iptables -A INPUT -p udp --dport 4174 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4174 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4174' -Direction Inbound -Protocol UDP -LocalPort 4174 -Action Block

Related ports

4172pcoip4173mma-discovery4175bccp4176tl-ipcproxy

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.