Port 13400 (doip-data, doip-disc)

IANA assigns port 13400 to doip-data, doip-disc: DoIP Data.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

doip-data TCP DoIP Data Joerg Schneider -

doip-disc UDP DoIP Discovery Joerg Schneider -

Registry dates for this port: registered 2011-01-26.

Linux: is anything listening on TCP 13400?

sudo ss -tlnp 'sport = :13400'

Linux: UDP 13400

sudo ss -ulnp 'sport = :13400'

Linux / macOS: which process owns the port

sudo lsof -nP -i :13400

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':13400 '

Windows (Command Prompt)

netstat -ano | findstr :13400

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 13400 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 13400

From Windows

Test-NetConnection HOST -Port 13400

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

nc -vzu -w 5 HOST 13400

ufw

sudo ufw deny 13400/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 13400 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 13400 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 13400' -Direction Inbound -Protocol TCP -LocalPort 13400 -Action Block

ufw

sudo ufw deny 13400/udp

iptables

sudo iptables -A INPUT -p udp --dport 13400 -j DROP

nftables

sudo nft add rule inet filter input udp dport 13400 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 13400' -Direction Inbound -Protocol UDP -LocalPort 13400 -Action Block

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