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// Other services

Port 3494: IBM 3494

Port 3494 is assigned by IANA to ibm3494 (IBM 3494).

3494

How ibm3494 works

Other services
client:3494ibm3494response client:3494ibm3494response

The client sends a request to port 3494 and the ibm3494 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 3494 dangerous?

We have no specific security note for port 3494. 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 3494

ServicePortTransportDescriptionReferenceUpdated
ibm3494 3494 TCP, UDP IBM 3494 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3494, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3494'      # process listening on 3494
sudo lsof -nP -i :3494

macOS

sudo lsof -nP -i :3494

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3494 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3494
netstat -ano | findstr :3494

From another machine

nmap -p 3494 -sV <host>
sudo nmap -sU -p 3494 <host>
nc -zv <host> 3494

Block it in the firewall

sudo ufw deny 3494/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3494" -Direction Inbound -LocalPort 3494 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3494 used for?

Port 3494 is assigned by IANA to ibm3494 (IBM 3494).

Is port 3494 TCP or UDP?

Port 3494 is registered for TCP and UDP.

Is it safe to open port 3494?

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 3494 is open?

On Linux run "ss -ltnup 'sport = :3494'", on macOS "lsof -nP -i :3494", and on Windows "netstat -ano | findstr :3494" to see the local process. From another machine, "nmap -p 3494 <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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