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// Other services

Port 1856: Fiorano MsgSvc

Port 1856 is assigned by IANA to fiorano-msgsvc (Fiorano MsgSvc).

1856

How fiorano-msgsvc works

Other services
client:1856fiorano-msgsvcresponse client:1856fiorano-msgsvcresponse

The client sends a request to port 1856 and the fiorano-msgsvc service answers.

Transport
TCP · UDP
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
Other services
01 Security

Is port 1856 dangerous?

We have no specific security note for port 1856. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 1856

ServicePortTransportDescriptionReferenceUpdated
fiorano-msgsvc 1856 TCP, UDP Fiorano MsgSvc - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1856, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1856'      # process listening on 1856
sudo lsof -nP -i :1856

macOS

sudo lsof -nP -i :1856

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1856 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1856
netstat -ano | findstr :1856

From another machine

nmap -p 1856 -sV <host>
sudo nmap -sU -p 1856 <host>
nc -zv <host> 1856

Block it in the firewall

sudo ufw deny 1856/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1856" -Direction Inbound -LocalPort 1856 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1856 used for?

Port 1856 is assigned by IANA to fiorano-msgsvc (Fiorano MsgSvc).

Is port 1856 TCP or UDP?

Port 1856 is registered for TCP and UDP.

Is it safe to open port 1856?

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. Close the port if nothing on the host needs it.

How do I check if port 1856 is open?

On Linux run "ss -ltnup 'sport = :1856'", on macOS "lsof -nP -i :1856", and on Windows "netstat -ano | findstr :1856" to see the local process. From another machine, "nmap -p 1856 <host>" shows whether it is reachable.

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