HTTPfy

Port 1944 (close-combat)

IANA assigns port 1944 to close-combat.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
close-combat TCP close-combat David Hua -
close-combat UDP close-combat David Hua -

Check what is listening on port 1944

Linux: is anything listening on TCP 1944?
sudo ss -tlnp 'sport = :1944'
Linux: UDP 1944
sudo ss -ulnp 'sport = :1944'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1944
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1944 '
Windows (Command Prompt)
netstat -ano | findstr :1944
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1944 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1944
From Windows
Test-NetConnection HOST -Port 1944
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1944

Block port 1944 in the firewall

ufw
sudo ufw deny 1944/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1944 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1944 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1944' -Direction Inbound -Protocol TCP -LocalPort 1944 -Action Block
ufw
sudo ufw deny 1944/udp
iptables
sudo iptables -A INPUT -p udp --dport 1944 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1944 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1944' -Direction Inbound -Protocol UDP -LocalPort 1944 -Action Block

Related ports

1942res1943beeyond-media1945dialogic-elmd1946tekpls

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