Port 4408 (slscc)

IANA assigns port 4408 to slscc: SLS Technology Control Centre.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

slscc TCP SLS Technology Control Centre Steven Sweeting -

Registry dates for this port: registered 2008-01-28.

Linux: is anything listening on TCP 4408?

sudo ss -tlnp 'sport = :4408'

Linux / macOS: which process owns the port

sudo lsof -nP -i :4408

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':4408 '

Windows (Command Prompt)

netstat -ano | findstr :4408

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4408 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 4408

From Windows

Test-NetConnection HOST -Port 4408

ufw

sudo ufw deny 4408/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 4408 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 4408 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 4408' -Direction Inbound -Protocol TCP -LocalPort 4408 -Action Block

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