HTTPfy

Port 1411 (af)

IANA assigns port 1411 to af: AudioFile.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
af TCP AudioFile Jim Gettys -
af UDP AudioFile Jim Gettys -

Check what is listening on port 1411

Linux: is anything listening on TCP 1411?
sudo ss -tlnp 'sport = :1411'
Linux: UDP 1411
sudo ss -ulnp 'sport = :1411'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1411
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1411 '
Windows (Command Prompt)
netstat -ano | findstr :1411
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1411 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1411
From Windows
Test-NetConnection HOST -Port 1411
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1411

Block port 1411 in the firewall

ufw
sudo ufw deny 1411/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1411 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1411 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1411' -Direction Inbound -Protocol TCP -LocalPort 1411 -Action Block
ufw
sudo ufw deny 1411/udp
iptables
sudo iptables -A INPUT -p udp --dport 1411 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1411 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1411' -Direction Inbound -Protocol UDP -LocalPort 1411 -Action Block

Related ports

1409here-lm1410hiq1412innosys1413innosys-acl

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