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Port 619 (compaq-evm)

IANA assigns port 619 to compaq-evm: Compaq EVM.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
compaq-evm TCP Compaq EVM Jem Treadwell -
compaq-evm UDP Compaq EVM Jem Treadwell -

Check what is listening on port 619

Linux: is anything listening on TCP 619?
sudo ss -tlnp 'sport = :619'
Linux: UDP 619
sudo ss -ulnp 'sport = :619'
Linux / macOS: which process owns the port
sudo lsof -nP -i :619
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':619 '
Windows (Command Prompt)
netstat -ano | findstr :619
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 619 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 619
From Windows
Test-NetConnection HOST -Port 619
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 619

Block port 619 in the firewall

ufw
sudo ufw deny 619/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 619 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 619 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 619' -Direction Inbound -Protocol TCP -LocalPort 619 -Action Block
ufw
sudo ufw deny 619/udp
iptables
sudo iptables -A INPUT -p udp --dport 619 -j DROP
nftables
sudo nft add rule inet filter input udp dport 619 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 619' -Direction Inbound -Protocol UDP -LocalPort 619 -Action Block

Related ports

617sco-dtmgr618dei-icda620sco-websrvrmgr621escp-ip

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