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Port 31416 (xqosd)

IANA assigns port 31416 to xqosd: XQoS network monitor.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
xqosd TCP XQoS network monitor Joe Elliott -
xqosd UDP XQoS network monitor Joe Elliott -

Registry dates for this port: registered 2002-06.

Check what is listening on port 31416

Linux: is anything listening on TCP 31416?
sudo ss -tlnp 'sport = :31416'
Linux: UDP 31416
sudo ss -ulnp 'sport = :31416'
Linux / macOS: which process owns the port
sudo lsof -nP -i :31416
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':31416 '
Windows (Command Prompt)
netstat -ano | findstr :31416
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 31416 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 31416
From Windows
Test-NetConnection HOST -Port 31416
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 31416

Block port 31416 in the firewall

ufw
sudo ufw deny 31416/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 31416 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 31416 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 31416' -Direction Inbound -Protocol TCP -LocalPort 31416 -Action Block
ufw
sudo ufw deny 31416/udp
iptables
sudo iptables -A INPUT -p udp --dport 31416 -j DROP
nftables
sudo nft add rule inet filter input udp dport 31416 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 31416' -Direction Inbound -Protocol UDP -LocalPort 31416 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.