HTTPfy

Port 2318 (cadencecontrol)

IANA assigns port 2318 to cadencecontrol: Cadence Control.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cadencecontrol TCP Cadence Control Buck Caldwell -
cadencecontrol UDP Cadence Control Buck Caldwell -

Check what is listening on port 2318

Linux: is anything listening on TCP 2318?
sudo ss -tlnp 'sport = :2318'
Linux: UDP 2318
sudo ss -ulnp 'sport = :2318'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2318
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2318 '
Windows (Command Prompt)
netstat -ano | findstr :2318
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2318 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2318
From Windows
Test-NetConnection HOST -Port 2318
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2318

Block port 2318 in the firewall

ufw
sudo ufw deny 2318/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2318 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2318 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2318' -Direction Inbound -Protocol TCP -LocalPort 2318 -Action Block
ufw
sudo ufw deny 2318/udp
iptables
sudo iptables -A INPUT -p udp --dport 2318 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2318 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2318' -Direction Inbound -Protocol UDP -LocalPort 2318 -Action Block

Related ports

2316sent-lm2317attachmate-g322319infolibria2320siebel-ns

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