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Port 224 (masqdialer)

IANA assigns port 224 to masqdialer.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
masqdialer TCP masqdialer
Possible Conflict of Port 222 with "Masqdialer" Charles Wright -
masqdialer UDP masqdialer
Possible Conflict of Port 222 with "Masqdialer" Charles Wright -

Check what is listening on port 224

Linux: is anything listening on TCP 224?
sudo ss -tlnp 'sport = :224'
Linux: UDP 224
sudo ss -ulnp 'sport = :224'
Linux / macOS: which process owns the port
sudo lsof -nP -i :224
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':224 '
Windows (Command Prompt)
netstat -ano | findstr :224
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 224 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 224
From Windows
Test-NetConnection HOST -Port 224
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 224

Block port 224 in the firewall

ufw
sudo ufw deny 224/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 224 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 224 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 224' -Direction Inbound -Protocol TCP -LocalPort 224 -Action Block
ufw
sudo ufw deny 224/udp
iptables
sudo iptables -A INPUT -p udp --dport 224 -j DROP
nftables
sudo nft add rule inet filter input udp dport 224 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 224' -Direction Inbound -Protocol UDP -LocalPort 224 -Action Block

Related ports

222rsh-spx223cdc242direct243sur-meas

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