CyberHunter
Local dataset, no network
// Other services

Port 3018: Service Registry

Port 3018 is assigned by IANA to srvc_registry (Service Registry), srvc-registry (Service Registry IANA assigned this well-formed service name as a replacement for "srvc_registry".).

3018

How srvc_registry works

Other services
client:3018srvc_registryresponse client:3018srvc_registryresponse

The client sends a request to port 3018 and the srvc_registry 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 3018 dangerous?

We have no specific security note for port 3018. 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 3018

ServicePortTransportDescriptionReferenceUpdated
srvc_registry 3018 TCP, UDP Service Registry - -
srvc-registry 3018 TCP, UDP Service Registry IANA assigned this well-formed service name as a replacement for "srvc_registry". - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3018, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3018'      # process listening on 3018
sudo lsof -nP -i :3018

macOS

sudo lsof -nP -i :3018

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3018 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3018
netstat -ano | findstr :3018

From another machine

nmap -p 3018 -sV <host>
sudo nmap -sU -p 3018 <host>
nc -zv <host> 3018

Block it in the firewall

sudo ufw deny 3018/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3018" -Direction Inbound -LocalPort 3018 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3018 used for?

Port 3018 is assigned by IANA to srvc_registry (Service Registry), srvc-registry (Service Registry IANA assigned this well-formed service name as a replacement for "srvc_registry".).

Is port 3018 TCP or UDP?

Port 3018 is registered for TCP and UDP.

Is it safe to open port 3018?

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 3018 is open?

On Linux run "ss -ltnup 'sport = :3018'", on macOS "lsof -nP -i :3018", and on Windows "netstat -ano | findstr :3018" to see the local process. From another machine, "nmap -p 3018 <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