Port 5780 (vts-rpc)

IANA assigns port 5780 to vts-rpc: Visual Tag System RPC.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

vts-rpc TCP Visual Tag System RPC Graham Bloice -

Registry dates for this port: registered 2009-09-17.

Linux: is anything listening on TCP 5780?

sudo ss -tlnp 'sport = :5780'

Linux / macOS: which process owns the port

sudo lsof -nP -i :5780

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':5780 '

Windows (Command Prompt)

netstat -ano | findstr :5780

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5780 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 5780

From Windows

Test-NetConnection HOST -Port 5780

ufw

sudo ufw deny 5780/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 5780 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 5780 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 5780' -Direction Inbound -Protocol TCP -LocalPort 5780 -Action Block

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