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// Other services

Port 7426: OpenView DM Postmaster Manager

Port 7426 is assigned by IANA to pmdmgr (OpenView DM Postmaster Manager).

7426

How pmdmgr works

Other services
client:7426pmdmgrresponse client:7426pmdmgrresponse

The client sends a request to port 7426 and the pmdmgr 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 7426 dangerous?

We have no specific security note for port 7426. 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 7426

ServicePortTransportDescriptionReferenceUpdated
pmdmgr 7426 TCP, UDP OpenView DM Postmaster Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 7426, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7426'      # process listening on 7426
sudo lsof -nP -i :7426

macOS

sudo lsof -nP -i :7426

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7426 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7426
netstat -ano | findstr :7426

From another machine

nmap -p 7426 -sV <host>
sudo nmap -sU -p 7426 <host>
nc -zv <host> 7426

Block it in the firewall

sudo ufw deny 7426/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7426" -Direction Inbound -LocalPort 7426 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7426 used for?

Port 7426 is assigned by IANA to pmdmgr (OpenView DM Postmaster Manager).

Is port 7426 TCP or UDP?

Port 7426 is registered for TCP and UDP.

Is it safe to open port 7426?

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 7426 is open?

On Linux run "ss -ltnup 'sport = :7426'", on macOS "lsof -nP -i :7426", and on Windows "netstat -ano | findstr :7426" to see the local process. From another machine, "nmap -p 7426 <host>" shows whether it is reachable.

05 Related
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