Port 16994 (amt-redir-tcp)

IANA assigns port 16994 to amt-redir-tcp: Intel(R) AMT Redirection/TCP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

amt-redir-tcp TCP Intel(R) AMT Redirection/TCP Nimrod Diamant -

amt-redir-tcp UDP Intel(R) AMT Redirection/TCP Nimrod Diamant -

Registry dates for this port: registered 2005-02.

Linux: is anything listening on TCP 16994?

sudo ss -tlnp 'sport = :16994'

Linux: UDP 16994

sudo ss -ulnp 'sport = :16994'

Linux / macOS: which process owns the port

sudo lsof -nP -i :16994

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':16994 '

Windows (Command Prompt)

netstat -ano | findstr :16994

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 16994 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 16994

From Windows

Test-NetConnection HOST -Port 16994

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 16994

ufw

sudo ufw deny 16994/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 16994 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 16994 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 16994' -Direction Inbound -Protocol TCP -LocalPort 16994 -Action Block

ufw

sudo ufw deny 16994/udp

iptables

sudo iptables -A INPUT -p udp --dport 16994 -j DROP

nftables

sudo nft add rule inet filter input udp dport 16994 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 16994' -Direction Inbound -Protocol UDP -LocalPort 16994 -Action Block

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