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Port 18184 (opsec-lea)

IANA assigns port 18184 to opsec-lea: OPSEC LEA.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
opsec-lea TCP OPSEC LEA Alon Kantor -
opsec-lea UDP OPSEC LEA Alon Kantor -

Check what is listening on port 18184

Linux: is anything listening on TCP 18184?
sudo ss -tlnp 'sport = :18184'
Linux: UDP 18184
sudo ss -ulnp 'sport = :18184'
Linux / macOS: which process owns the port
sudo lsof -nP -i :18184
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':18184 '
Windows (Command Prompt)
netstat -ano | findstr :18184
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 18184 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 18184
From Windows
Test-NetConnection HOST -Port 18184
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 18184

Block port 18184 in the firewall

ufw
sudo ufw deny 18184/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 18184 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 18184 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 18184' -Direction Inbound -Protocol TCP -LocalPort 18184 -Action Block
ufw
sudo ufw deny 18184/udp
iptables
sudo iptables -A INPUT -p udp --dport 18184 -j DROP
nftables
sudo nft add rule inet filter input udp dport 18184 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 18184' -Direction Inbound -Protocol UDP -LocalPort 18184 -Action Block

Related ports

18182opsec-ufp18183opsec-sam18185opsec-omi18186ohsc

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