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// Other services

Port 29167: ObTools Message Protocol

Port 29167 is assigned by IANA to otmp (ObTools Message Protocol).

29167

How otmp works

Other services
client:29167otmpresponse client:29167otmpresponse

The client sends a request to port 29167 and the otmp 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 29167 dangerous?

We have no specific security note for port 29167. 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 29167

ServicePortTransportDescriptionReferenceUpdated
otmp 29167 TCP, UDP ObTools Message Protocol - 2006-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 29167, and is it reachable?

Linux

sudo ss -ltnup 'sport = :29167'      # process listening on 29167
sudo lsof -nP -i :29167

macOS

sudo lsof -nP -i :29167

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 29167 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 29167
netstat -ano | findstr :29167

From another machine

nmap -p 29167 -sV <host>
sudo nmap -sU -p 29167 <host>
nc -zv <host> 29167

Block it in the firewall

sudo ufw deny 29167/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 29167" -Direction Inbound -LocalPort 29167 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 29167 used for?

Port 29167 is assigned by IANA to otmp (ObTools Message Protocol).

Is port 29167 TCP or UDP?

Port 29167 is registered for TCP and UDP.

Is it safe to open port 29167?

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 29167 is open?

On Linux run "ss -ltnup 'sport = :29167'", on macOS "lsof -nP -i :29167", and on Windows "netstat -ano | findstr :29167" to see the local process. From another machine, "nmap -p 29167 <host>" shows whether it is reachable.

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