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Port 5067 (authentx)

IANA assigns port 5067 to authentx: Authentx Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
authentx TCP Authentx Service Alberto Fernandez -
authentx UDP Authentx Service Alberto Fernandez -

Registry dates for this port: registered 2006-01.

Check what is listening on port 5067

Linux: is anything listening on TCP 5067?
sudo ss -tlnp 'sport = :5067'
Linux: UDP 5067
sudo ss -ulnp 'sport = :5067'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5067
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5067 '
Windows (Command Prompt)
netstat -ano | findstr :5067
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5067 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5067
From Windows
Test-NetConnection HOST -Port 5067
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5067

Block port 5067 in the firewall

ufw
sudo ufw deny 5067/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5067 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5067 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5067' -Direction Inbound -Protocol TCP -LocalPort 5067 -Action Block
ufw
sudo ufw deny 5067/udp
iptables
sudo iptables -A INPUT -p udp --dport 5067 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5067 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5067' -Direction Inbound -Protocol UDP -LocalPort 5067 -Action Block

Related ports

5065ca-25066stanag-50665068bitforestsrv5069i-net-2000-npr

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