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Port 2437 (unicontrol)

IANA assigns port 2437 to unicontrol: UniControl.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
unicontrol TCP UniControl Ing Markus Huemer -
unicontrol UDP UniControl Ing Markus Huemer -

Check what is listening on port 2437

Linux: is anything listening on TCP 2437?
sudo ss -tlnp 'sport = :2437'
Linux: UDP 2437
sudo ss -ulnp 'sport = :2437'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2437
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2437 '
Windows (Command Prompt)
netstat -ano | findstr :2437
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2437 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2437
From Windows
Test-NetConnection HOST -Port 2437
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2437

Block port 2437 in the firewall

ufw
sudo ufw deny 2437/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2437 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2437 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2437' -Direction Inbound -Protocol TCP -LocalPort 2437 -Action Block
ufw
sudo ufw deny 2437/udp
iptables
sudo iptables -A INPUT -p udp --dport 2437 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2437 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2437' -Direction Inbound -Protocol UDP -LocalPort 2437 -Action Block

Related ports

2499unicontrol2435optilogic2436topx2438msp2439sybasedbsynch

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