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// Network services

Port 5780: Visual Tag System RPC

Port 5780 is assigned by IANA to vts-rpc (Visual Tag System RPC).

5780

How vts-rpc works

Network services
client:5780vts-rpcresponse client:5780vts-rpcresponse

The client sends a request to port 5780 and the vts-rpc service answers.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Network services
01 Security

Is port 5780 dangerous?

We have no specific security note for port 5780. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 5780

ServicePortTransportDescriptionReferenceUpdated
vts-rpc 5780 TCP Visual Tag System RPC - 2009-09-17
-5780-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5780, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5780'      # process listening on 5780
sudo lsof -nP -i :5780

macOS

sudo lsof -nP -i :5780

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5780 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5780
netstat -ano | findstr :5780

From another machine

nmap -p 5780 -sV <host>
nc -zv <host> 5780

Block it in the firewall

sudo ufw deny 5780/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5780" -Direction Inbound -LocalPort 5780 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5780 used for?

Port 5780 is assigned by IANA to vts-rpc (Visual Tag System RPC).

Is port 5780 TCP or UDP?

Port 5780 is registered for TCP.

Is it safe to open port 5780?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 5780 is open?

On Linux run "ss -ltnup 'sport = :5780'", on macOS "lsof -nP -i :5780", and on Windows "netstat -ano | findstr :5780" to see the local process. From another machine, "nmap -p 5780 <host>" shows whether it is reachable.

05 Related
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk

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