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Port 47806 (ap)

IANA assigns port 47806 to ap: ALC Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ap TCP ALC Protocol Dave Robin -
ap UDP ALC Protocol Dave Robin -

Check what is listening on port 47806

Linux: is anything listening on TCP 47806?
sudo ss -tlnp 'sport = :47806'
Linux: UDP 47806
sudo ss -ulnp 'sport = :47806'
Linux / macOS: which process owns the port
sudo lsof -nP -i :47806
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':47806 '
Windows (Command Prompt)
netstat -ano | findstr :47806
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 47806 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 47806
From Windows
Test-NetConnection HOST -Port 47806
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 47806

Block port 47806 in the firewall

ufw
sudo ufw deny 47806/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 47806 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 47806 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 47806' -Direction Inbound -Protocol TCP -LocalPort 47806 -Action Block
ufw
sudo ufw deny 47806/udp
iptables
sudo iptables -A INPUT -p udp --dport 47806 -j DROP
nftables
sudo nft add rule inet filter input udp dport 47806 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 47806' -Direction Inbound -Protocol UDP -LocalPort 47806 -Action Block

Related ports

47557dbbrowse47624directplaysrvr47808BACnet/IP47809presonus-ucnet

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