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Port 5404 (hpoms-dps-lstn)

IANA assigns port 5404 to hpoms-dps-lstn: HPOMS-DPS-LSTN.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
hpoms-dps-lstn TCP HPOMS-DPS-LSTN Harold Froehling -
hpoms-dps-lstn UDP HPOMS-DPS-LSTN Harold Froehling -

Check what is listening on port 5404

Linux: is anything listening on TCP 5404?
sudo ss -tlnp 'sport = :5404'
Linux: UDP 5404
sudo ss -ulnp 'sport = :5404'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5404
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5404 '
Windows (Command Prompt)
netstat -ano | findstr :5404
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5404 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5404
From Windows
Test-NetConnection HOST -Port 5404
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5404

Block port 5404 in the firewall

ufw
sudo ufw deny 5404/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5404 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5404 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5404' -Direction Inbound -Protocol TCP -LocalPort 5404 -Action Block
ufw
sudo ufw deny 5404/udp
iptables
sudo iptables -A INPUT -p udp --dport 5404 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5404 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5404' -Direction Inbound -Protocol UDP -LocalPort 5404 -Action Block

Related ports

5402mftp5403hpoms-ci-lstn5405netsupport5406systemics-sox

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