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// Other services

Port 3860: Server/Application State Protocol (SASP)

Port 3860 is assigned by IANA to sasp (Server/Application State Protocol (SASP)).

3860

How sasp works

Other services
client:3860saspresponse client:3860saspresponse

The client sends a request to port 3860 and the sasp 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 3860 dangerous?

We have no specific security note for port 3860. 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 3860

ServicePortTransportDescriptionReferenceUpdated
sasp 3860 TCP, UDP Server/Application State Protocol (SASP) - 2003-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 3860, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3860'      # process listening on 3860
sudo lsof -nP -i :3860

macOS

sudo lsof -nP -i :3860

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3860 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3860
netstat -ano | findstr :3860

From another machine

nmap -p 3860 -sV <host>
sudo nmap -sU -p 3860 <host>
nc -zv <host> 3860

Block it in the firewall

sudo ufw deny 3860/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3860" -Direction Inbound -LocalPort 3860 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3860 used for?

Port 3860 is assigned by IANA to sasp (Server/Application State Protocol (SASP)).

Is port 3860 TCP or UDP?

Port 3860 is registered for TCP and UDP.

Is it safe to open port 3860?

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 3860 is open?

On Linux run "ss -ltnup 'sport = :3860'", on macOS "lsof -nP -i :3860", and on Windows "netstat -ano | findstr :3860" to see the local process. From another machine, "nmap -p 3860 <host>" shows whether it is reachable.

05 Related
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