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Port 1483 (afs)

IANA assigns port 1483 to afs: AFS License Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
afs TCP AFS License Manager Michael R Pizolato -
afs UDP AFS License Manager Michael R Pizolato -

Check what is listening on port 1483

Linux: is anything listening on TCP 1483?
sudo ss -tlnp 'sport = :1483'
Linux: UDP 1483
sudo ss -ulnp 'sport = :1483'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1483
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1483 '
Windows (Command Prompt)
netstat -ano | findstr :1483
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1483 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1483
From Windows
Test-NetConnection HOST -Port 1483
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1483

Block port 1483 in the firewall

ufw
sudo ufw deny 1483/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1483 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1483 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1483' -Direction Inbound -Protocol TCP -LocalPort 1483 -Action Block
ufw
sudo ufw deny 1483/udp
iptables
sudo iptables -A INPUT -p udp --dport 1483 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1483 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1483' -Direction Inbound -Protocol UDP -LocalPort 1483 -Action Block

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