CyberHunter
Local dataset, no network
// Other services

Port 2859: Active Memory

Port 2859 is assigned by IANA to activememory (Active Memory).

2859

How activememory works

Other services
client:2859activememoryresponse client:2859activememoryresponse

The client sends a request to port 2859 and the activememory 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 2859 dangerous?

We have no specific security note for port 2859. 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 2859

ServicePortTransportDescriptionReferenceUpdated
activememory 2859 TCP, UDP Active Memory - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2859, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2859'      # process listening on 2859
sudo lsof -nP -i :2859

macOS

sudo lsof -nP -i :2859

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2859 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2859
netstat -ano | findstr :2859

From another machine

nmap -p 2859 -sV <host>
sudo nmap -sU -p 2859 <host>
nc -zv <host> 2859

Block it in the firewall

sudo ufw deny 2859/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2859" -Direction Inbound -LocalPort 2859 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2859 used for?

Port 2859 is assigned by IANA to activememory (Active Memory).

Is port 2859 TCP or UDP?

Port 2859 is registered for TCP and UDP.

Is it safe to open port 2859?

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 2859 is open?

On Linux run "ss -ltnup 'sport = :2859'", on macOS "lsof -nP -i :2859", and on Windows "netstat -ano | findstr :2859" to see the local process. From another machine, "nmap -p 2859 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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