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Port 1283 (productinfo)

IANA assigns port 1283 to productinfo: Product Information.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
productinfo TCP Product Information - -
productinfo UDP Product Information - -

Check what is listening on port 1283

Linux: is anything listening on TCP 1283?
sudo ss -tlnp 'sport = :1283'
Linux: UDP 1283
sudo ss -ulnp 'sport = :1283'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1283
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1283 '
Windows (Command Prompt)
netstat -ano | findstr :1283
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1283 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1283
From Windows
Test-NetConnection HOST -Port 1283
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1283

Block port 1283 in the firewall

ufw
sudo ufw deny 1283/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1283 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1283 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1283' -Direction Inbound -Protocol TCP -LocalPort 1283 -Action Block
ufw
sudo ufw deny 1283/udp
iptables
sudo iptables -A INPUT -p udp --dport 1283 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1283 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1283' -Direction Inbound -Protocol UDP -LocalPort 1283 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.