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Port 5430 (radec-corp)

IANA assigns port 5430 to radec-corp: RADEC CORP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
radec-corp TCP RADEC CORP David Chell -
radec-corp UDP RADEC CORP David Chell -

Check what is listening on port 5430

Linux: is anything listening on TCP 5430?
sudo ss -tlnp 'sport = :5430'
Linux: UDP 5430
sudo ss -ulnp 'sport = :5430'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5430
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5430 '
Windows (Command Prompt)
netstat -ano | findstr :5430
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5430 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5430
From Windows
Test-NetConnection HOST -Port 5430
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5430

Block port 5430 in the firewall

ufw
sudo ufw deny 5430/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5430 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5430 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5430' -Direction Inbound -Protocol TCP -LocalPort 5430 -Action Block
ufw
sudo ufw deny 5430/udp
iptables
sudo iptables -A INPUT -p udp --dport 5430 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5430 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5430' -Direction Inbound -Protocol UDP -LocalPort 5430 -Action Block

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