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Port 19412 (hp-sessmon)

IANA assigns port 19412 to hp-sessmon: HP-SESSMON.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
hp-sessmon TCP HP-SESSMON Gita Murthy -
hp-sessmon UDP HP-SESSMON Gita Murthy -

Check what is listening on port 19412

Linux: is anything listening on TCP 19412?
sudo ss -tlnp 'sport = :19412'
Linux: UDP 19412
sudo ss -ulnp 'sport = :19412'
Linux / macOS: which process owns the port
sudo lsof -nP -i :19412
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':19412 '
Windows (Command Prompt)
netstat -ano | findstr :19412
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 19412 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 19412
From Windows
Test-NetConnection HOST -Port 19412
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 19412

Block port 19412 in the firewall

ufw
sudo ufw deny 19412/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 19412 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 19412 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 19412' -Direction Inbound -Protocol TCP -LocalPort 19412 -Action Block
ufw
sudo ufw deny 19412/udp
iptables
sudo iptables -A INPUT -p udp --dport 19412 -j DROP
nftables
sudo nft add rule inet filter input udp dport 19412 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 19412' -Direction Inbound -Protocol UDP -LocalPort 19412 -Action Block

Related ports

19410hp-sco19411hp-sca19539fxuptp19540sxuptp

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