CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 1805: ENL-Name

Port 1805 is assigned by IANA to enl-name (ENL-Name).

1805

How enl-name works

Other services
client:1805enl-nameresponse client:1805enl-nameresponse

The client sends a request to port 1805 and the enl-name 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 1805 dangerous?

We have no specific security note for port 1805. 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 1805

ServicePortTransportDescriptionReferenceUpdated
enl-name 1805 TCP, UDP ENL-Name - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1805, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1805'      # process listening on 1805
sudo lsof -nP -i :1805

macOS

sudo lsof -nP -i :1805

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1805 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1805
netstat -ano | findstr :1805

From another machine

nmap -p 1805 -sV <host>
sudo nmap -sU -p 1805 <host>
nc -zv <host> 1805

Block it in the firewall

sudo ufw deny 1805/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1805" -Direction Inbound -LocalPort 1805 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1805 used for?

Port 1805 is assigned by IANA to enl-name (ENL-Name).

Is port 1805 TCP or UDP?

Port 1805 is registered for TCP and UDP.

Is it safe to open port 1805?

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 1805 is open?

On Linux run "ss -ltnup 'sport = :1805'", on macOS "lsof -nP -i :1805", and on Windows "netstat -ano | findstr :1805" to see the local process. From another machine, "nmap -p 1805 <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