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// Other services

Port 1451: IBM Information Management

Port 1451 is assigned by IANA to infoman (IBM Information Management).

1451

How infoman works

Other services
client:1451infomanresponse client:1451infomanresponse

The client sends a request to port 1451 and the infoman 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 1451 dangerous?

We have no specific security note for port 1451. 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 1451

ServicePortTransportDescriptionReferenceUpdated
infoman 1451 TCP, UDP IBM Information Management - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1451, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1451'      # process listening on 1451
sudo lsof -nP -i :1451

macOS

sudo lsof -nP -i :1451

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1451 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1451
netstat -ano | findstr :1451

From another machine

nmap -p 1451 -sV <host>
sudo nmap -sU -p 1451 <host>
nc -zv <host> 1451

Block it in the firewall

sudo ufw deny 1451/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1451" -Direction Inbound -LocalPort 1451 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1451 used for?

Port 1451 is assigned by IANA to infoman (IBM Information Management).

Is port 1451 TCP or UDP?

Port 1451 is registered for TCP and UDP.

Is it safe to open port 1451?

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 1451 is open?

On Linux run "ss -ltnup 'sport = :1451'", on macOS "lsof -nP -i :1451", and on Windows "netstat -ano | findstr :1451" to see the local process. From another machine, "nmap -p 1451 <host>" shows whether it is reachable.

05 Related
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