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Port 1447 (apri-lm)

IANA assigns port 1447 to apri-lm: Applied Parallel Research LM.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
apri-lm TCP Applied Parallel Research LM Jim Dillon -
apri-lm UDP Applied Parallel Research LM Jim Dillon -

Check what is listening on port 1447

Linux: is anything listening on TCP 1447?
sudo ss -tlnp 'sport = :1447'
Linux: UDP 1447
sudo ss -ulnp 'sport = :1447'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1447
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1447 '
Windows (Command Prompt)
netstat -ano | findstr :1447
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1447 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1447
From Windows
Test-NetConnection HOST -Port 1447
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1447

Block port 1447 in the firewall

ufw
sudo ufw deny 1447/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1447 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1447 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1447' -Direction Inbound -Protocol TCP -LocalPort 1447 -Action Block
ufw
sudo ufw deny 1447/udp
iptables
sudo iptables -A INPUT -p udp --dport 1447 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1447 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1447' -Direction Inbound -Protocol UDP -LocalPort 1447 -Action Block

Related ports

1445proxima-lm1446ora-lm1448oc-lm1449peport

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