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Port 1487 (localinfosrvr)

IANA assigns port 1487 to localinfosrvr: LocalInfoSrvr.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
localinfosrvr TCP LocalInfoSrvr Brian Matthews 2 -
localinfosrvr UDP LocalInfoSrvr Brian Matthews 2 -

Check what is listening on port 1487

Linux: is anything listening on TCP 1487?
sudo ss -tlnp 'sport = :1487'
Linux: UDP 1487
sudo ss -ulnp 'sport = :1487'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1487
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1487 '
Windows (Command Prompt)
netstat -ano | findstr :1487
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1487 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1487
From Windows
Test-NetConnection HOST -Port 1487
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1487

Block port 1487 in the firewall

ufw
sudo ufw deny 1487/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1487 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1487 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1487' -Direction Inbound -Protocol TCP -LocalPort 1487 -Action Block
ufw
sudo ufw deny 1487/udp
iptables
sudo iptables -A INPUT -p udp --dport 1487 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1487 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1487' -Direction Inbound -Protocol UDP -LocalPort 1487 -Action Block

Related ports

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