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Port 416 (silverplatter)

IANA assigns port 416 to silverplatter: Silverplatter.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
silverplatter TCP Silverplatter Peter Ciuffetti -
silverplatter UDP Silverplatter Peter Ciuffetti -

Check what is listening on port 416

Linux: is anything listening on TCP 416?
sudo ss -tlnp 'sport = :416'
Linux: UDP 416
sudo ss -ulnp 'sport = :416'
Linux / macOS: which process owns the port
sudo lsof -nP -i :416
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':416 '
Windows (Command Prompt)
netstat -ano | findstr :416
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 416 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 416
From Windows
Test-NetConnection HOST -Port 416
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 416

Block port 416 in the firewall

ufw
sudo ufw deny 416/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 416 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 416 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 416' -Direction Inbound -Protocol TCP -LocalPort 416 -Action Block
ufw
sudo ufw deny 416/udp
iptables
sudo iptables -A INPUT -p udp --dport 416 -j DROP
nftables
sudo nft add rule inet filter input udp dport 416 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 416' -Direction Inbound -Protocol UDP -LocalPort 416 -Action Block

Related ports

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