CyberHunter
Local dataset, no network
// Other services

Port 1694: rrimwm

Port 1694 is assigned by IANA to rrimwm (rrimwm).

1694

How rrimwm works

Other services
client:1694rrimwmresponse client:1694rrimwmresponse

The client sends a request to port 1694 and the rrimwm 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 1694 dangerous?

We have no specific security note for port 1694. 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 1694

ServicePortTransportDescriptionReferenceUpdated
rrimwm 1694 TCP, UDP rrimwm - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1694, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1694'      # process listening on 1694
sudo lsof -nP -i :1694

macOS

sudo lsof -nP -i :1694

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1694 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1694
netstat -ano | findstr :1694

From another machine

nmap -p 1694 -sV <host>
sudo nmap -sU -p 1694 <host>
nc -zv <host> 1694

Block it in the firewall

sudo ufw deny 1694/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1694" -Direction Inbound -LocalPort 1694 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1694 used for?

Port 1694 is assigned by IANA to rrimwm (rrimwm).

Is port 1694 TCP or UDP?

Port 1694 is registered for TCP and UDP.

Is it safe to open port 1694?

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 1694 is open?

On Linux run "ss -ltnup 'sport = :1694'", on macOS "lsof -nP -i :1694", and on Windows "netstat -ano | findstr :1694" to see the local process. From another machine, "nmap -p 1694 <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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