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Port 18182 (opsec-ufp)

IANA assigns port 18182 to opsec-ufp: OPSEC UFP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
opsec-ufp TCP OPSEC UFP Alon Kantor -
opsec-ufp UDP OPSEC UFP Alon Kantor -

Check what is listening on port 18182

Linux: is anything listening on TCP 18182?
sudo ss -tlnp 'sport = :18182'
Linux: UDP 18182
sudo ss -ulnp 'sport = :18182'
Linux / macOS: which process owns the port
sudo lsof -nP -i :18182
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':18182 '
Windows (Command Prompt)
netstat -ano | findstr :18182
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 18182 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 18182
From Windows
Test-NetConnection HOST -Port 18182
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 18182

Block port 18182 in the firewall

ufw
sudo ufw deny 18182/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 18182 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 18182 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 18182' -Direction Inbound -Protocol TCP -LocalPort 18182 -Action Block
ufw
sudo ufw deny 18182/udp
iptables
sudo iptables -A INPUT -p udp --dport 18182 -j DROP
nftables
sudo nft add rule inet filter input udp dport 18182 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 18182' -Direction Inbound -Protocol UDP -LocalPort 18182 -Action Block

Related ports

18136racf18181opsec-cvp18183opsec-sam18184opsec-lea

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