CyberHunter
Local dataset, no network
// Other services

Port 5151: ESRI SDE Instance

Port 5151 is assigned by IANA to esri_sde (ESRI SDE Instance), esri-sde (ESRI SDE Instance IANA assigned this well-formed service name as a replacement for "esri_sde".).

5151

How esri_sde works

Other services
client:5151esri_sderesponse client:5151esri_sderesponse

The client sends a request to port 5151 and the esri_sde service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 5151 dangerous?

We have no specific security note for port 5151. 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 5151

ServicePortTransportDescriptionReferenceUpdated
esri_sde 5151 TCP, UDP ESRI SDE Instance - -
esri-sde 5151 TCP, UDP ESRI SDE Instance IANA assigned this well-formed service name as a replacement for "esri_sde".
Reported: Unauthorized Use Known on ports 5151 and 5152
 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5151, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5151'      # process listening on 5151
sudo lsof -nP -i :5151

macOS

sudo lsof -nP -i :5151

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5151 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5151
netstat -ano | findstr :5151

From another machine

nmap -p 5151 -sV <host>
sudo nmap -sU -p 5151 <host>
nc -zv <host> 5151

Block it in the firewall

sudo ufw deny 5151/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5151" -Direction Inbound -LocalPort 5151 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5151 used for?

Port 5151 is assigned by IANA to esri_sde (ESRI SDE Instance), esri-sde (ESRI SDE Instance IANA assigned this well-formed service name as a replacement for "esri_sde".).

Is port 5151 TCP or UDP?

Port 5151 is registered for TCP and UDP.

Is it safe to open port 5151?

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 5151 is open?

On Linux run "ss -ltnup 'sport = :5151'", on macOS "lsof -nP -i :5151", and on Windows "netstat -ano | findstr :5151" to see the local process. From another machine, "nmap -p 5151 <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

Latest vulnerability news

All news