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Port 154 (netsc-prod)

IANA assigns port 154 to netsc-prod: NETSC.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netsc-prod TCP NETSC - -
netsc-prod UDP NETSC - -

Check what is listening on port 154

Linux: is anything listening on TCP 154?
sudo ss -tlnp 'sport = :154'
Linux: UDP 154
sudo ss -ulnp 'sport = :154'
Linux / macOS: which process owns the port
sudo lsof -nP -i :154
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':154 '
Windows (Command Prompt)
netstat -ano | findstr :154
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 154 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 154
From Windows
Test-NetConnection HOST -Port 154
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 154

Block port 154 in the firewall

ufw
sudo ufw deny 154/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 154 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 154 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 154' -Direction Inbound -Protocol TCP -LocalPort 154 -Action Block
ufw
sudo ufw deny 154/udp
iptables
sudo iptables -A INPUT -p udp --dport 154 -j DROP
nftables
sudo nft add rule inet filter input udp dport 154 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 154' -Direction Inbound -Protocol UDP -LocalPort 154 -Action Block

Related ports

152bftp153sgmp155netsc-dev156sqlsrv

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