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Port 5461 (silkmeter)

IANA assigns port 5461 to silkmeter: SILKMETER.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
silkmeter TCP SILKMETER Klaus Fellner -
silkmeter UDP SILKMETER Klaus Fellner -

Check what is listening on port 5461

Linux: is anything listening on TCP 5461?
sudo ss -tlnp 'sport = :5461'
Linux: UDP 5461
sudo ss -ulnp 'sport = :5461'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5461
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5461 '
Windows (Command Prompt)
netstat -ano | findstr :5461
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5461 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5461
From Windows
Test-NetConnection HOST -Port 5461
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5461

Block port 5461 in the firewall

ufw
sudo ufw deny 5461/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5461 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5461 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5461' -Direction Inbound -Protocol TCP -LocalPort 5461 -Action Block
ufw
sudo ufw deny 5461/udp
iptables
sudo iptables -A INPUT -p udp --dport 5461 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5461 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5461' -Direction Inbound -Protocol UDP -LocalPort 5461 -Action Block

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