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// Other services

Port 7073: MarTalk protocol

Port 7073 is assigned by IANA to martalk (MarTalk protocol).

7073

How martalk works

Other services
client:7073martalkresponse client:7073martalkresponse

The client sends a request to port 7073 and the martalk service answers.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
01 Security

Is port 7073 dangerous?

We have no specific security note for port 7073. 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 7073

ServicePortTransportDescriptionReferenceUpdated
martalk 7073 TCP MarTalk protocol - 2013-09-02
-7073-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 7073, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7073'      # process listening on 7073
sudo lsof -nP -i :7073

macOS

sudo lsof -nP -i :7073

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7073 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7073
netstat -ano | findstr :7073

From another machine

nmap -p 7073 -sV <host>
nc -zv <host> 7073

Block it in the firewall

sudo ufw deny 7073/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7073" -Direction Inbound -LocalPort 7073 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7073 used for?

Port 7073 is assigned by IANA to martalk (MarTalk protocol).

Is port 7073 TCP or UDP?

Port 7073 is registered for TCP.

Is it safe to open port 7073?

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 7073 is open?

On Linux run "ss -ltnup 'sport = :7073'", on macOS "lsof -nP -i :7073", and on Windows "netstat -ano | findstr :7073" to see the local process. From another machine, "nmap -p 7073 <host>" shows whether it is reachable.

05 Related

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