Port 16950 (sgcip)

IANA assigns port 16950 to sgcip: Simple Generic Client Interface Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

sgcip TCP Simple Generic Client Interface Protocol John Aquilino -

sgcip UDP Simple Generic Client Interface Protocol John Aquilino -

Linux: is anything listening on TCP 16950?

sudo ss -tlnp 'sport = :16950'

Linux: UDP 16950

sudo ss -ulnp 'sport = :16950'

Linux / macOS: which process owns the port

sudo lsof -nP -i :16950

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':16950 '

Windows (Command Prompt)

netstat -ano | findstr :16950

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 16950 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 16950

From Windows

Test-NetConnection HOST -Port 16950

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 16950

ufw

sudo ufw deny 16950/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 16950 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 16950 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 16950' -Direction Inbound -Protocol TCP -LocalPort 16950 -Action Block

ufw

sudo ufw deny 16950/udp

iptables

sudo iptables -A INPUT -p udp --dport 16950 -j DROP

nftables

sudo nft add rule inet filter input udp dport 16950 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 16950' -Direction Inbound -Protocol UDP -LocalPort 16950 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.