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Port 410 (decladebug)

IANA assigns port 410 to decladebug: DECLadebug Remote Debug Protocol.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
decladebug TCP DECLadebug Remote Debug Protocol Hewlett Packard -
decladebug UDP DECLadebug Remote Debug Protocol Hewlett Packard -

Check what is listening on port 410

Linux: is anything listening on TCP 410?
sudo ss -tlnp 'sport = :410'
Linux: UDP 410
sudo ss -ulnp 'sport = :410'
Linux / macOS: which process owns the port
sudo lsof -nP -i :410
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':410 '
Windows (Command Prompt)
netstat -ano | findstr :410
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 410 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 410
From Windows
Test-NetConnection HOST -Port 410
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 410

Block port 410 in the firewall

ufw
sudo ufw deny 410/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 410 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 410 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 410' -Direction Inbound -Protocol TCP -LocalPort 410 -Action Block
ufw
sudo ufw deny 410/udp
iptables
sudo iptables -A INPUT -p udp --dport 410 -j DROP
nftables
sudo nft add rule inet filter input udp dport 410 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 410' -Direction Inbound -Protocol UDP -LocalPort 410 -Action Block

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408prm-sm409prm-nm411rmt412synoptics-trap

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