HTTPfy

Port 4675 (dhct-status)

IANA assigns port 4675 to dhct-status: BIAP Device Status.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dhct-status TCP BIAP Device Status - -
dhct-status UDP BIAP Device Status - -

Check what is listening on port 4675

Linux: is anything listening on TCP 4675?
sudo ss -tlnp 'sport = :4675'
Linux: UDP 4675
sudo ss -ulnp 'sport = :4675'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4675
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4675 '
Windows (Command Prompt)
netstat -ano | findstr :4675
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4675 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4675
From Windows
Test-NetConnection HOST -Port 4675
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4675

Block port 4675 in the firewall

ufw
sudo ufw deny 4675/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4675 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4675 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4675' -Direction Inbound -Protocol TCP -LocalPort 4675 -Action Block
ufw
sudo ufw deny 4675/udp
iptables
sudo iptables -A INPUT -p udp --dport 4675 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4675 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4675' -Direction Inbound -Protocol UDP -LocalPort 4675 -Action Block

Related ports

4673cxws4674appiq-mgmt4676dhct-alerts4677bcs

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