HTTPfy

Port 2211 (emwin)

IANA assigns port 2211 to emwin: EMWIN.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
emwin TCP EMWIN Antonio Querubin -
emwin UDP EMWIN Antonio Querubin -

Registry dates for this port: registered 2008-03-10.

Check what is listening on port 2211

Linux: is anything listening on TCP 2211?
sudo ss -tlnp 'sport = :2211'
Linux: UDP 2211
sudo ss -ulnp 'sport = :2211'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2211
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2211 '
Windows (Command Prompt)
netstat -ano | findstr :2211
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2211 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2211
From Windows
Test-NetConnection HOST -Port 2211
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2211

Block port 2211 in the firewall

ufw
sudo ufw deny 2211/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2211 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2211 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2211' -Direction Inbound -Protocol TCP -LocalPort 2211 -Action Block
ufw
sudo ufw deny 2211/udp
iptables
sudo iptables -A INPUT -p udp --dport 2211 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2211 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2211' -Direction Inbound -Protocol UDP -LocalPort 2211 -Action Block

Related ports

2209rimf-ps2210noaaport2212leecoposserver2213kali

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