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Port 8416 (espeech)

IANA assigns port 8416 to espeech: eSpeech Session Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
espeech TCP eSpeech Session Protocol Scott Tarone -
espeech UDP eSpeech Session Protocol Scott Tarone -

Registry dates for this port: registered 2002-11.

Check what is listening on port 8416

Linux: is anything listening on TCP 8416?
sudo ss -tlnp 'sport = :8416'
Linux: UDP 8416
sudo ss -ulnp 'sport = :8416'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8416
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8416 '
Windows (Command Prompt)
netstat -ano | findstr :8416
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8416 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8416
From Windows
Test-NetConnection HOST -Port 8416
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8416

Block port 8416 in the firewall

ufw
sudo ufw deny 8416/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8416 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8416 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8416' -Direction Inbound -Protocol TCP -LocalPort 8416 -Action Block
ufw
sudo ufw deny 8416/udp
iptables
sudo iptables -A INPUT -p udp --dport 8416 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8416 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8416' -Direction Inbound -Protocol UDP -LocalPort 8416 -Action Block

Related ports

8405svbackup8415dlpx-sp8417espeech-rtp8423aritts

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