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// Network services

Port 5152: ESRI SDE Instance Discovery

Port 5152 is assigned by IANA to sde-discovery (ESRI SDE Instance Discovery).

5152

How sde-discovery works

Network services
client:5152sde-discoveryresponse client:5152sde-discoveryresponse

The client sends a request to port 5152 and the sde-discovery 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
Network services
01 Security

Is port 5152 dangerous?

We have no specific security note for port 5152. 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 5152

ServicePortTransportDescriptionReferenceUpdated
sde-discovery 5152 TCP, UDP ESRI SDE Instance Discovery
Reported: Unauthorized Use Known on ports 5151 and 5152
 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5152, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5152'      # process listening on 5152
sudo lsof -nP -i :5152

macOS

sudo lsof -nP -i :5152

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5152 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5152
netstat -ano | findstr :5152

From another machine

nmap -p 5152 -sV <host>
sudo nmap -sU -p 5152 <host>
nc -zv <host> 5152

Block it in the firewall

sudo ufw deny 5152/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5152" -Direction Inbound -LocalPort 5152 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5152 used for?

Port 5152 is assigned by IANA to sde-discovery (ESRI SDE Instance Discovery).

Is port 5152 TCP or UDP?

Port 5152 is registered for TCP and UDP.

Is it safe to open port 5152?

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 5152 is open?

On Linux run "ss -ltnup 'sport = :5152'", on macOS "lsof -nP -i :5152", and on Windows "netstat -ano | findstr :5152" to see the local process. From another machine, "nmap -p 5152 <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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