# How do you open ax.25 ports?

I'm trying to follow this tutorial I almost got to the end, about 9:15 was where I got stuck. Right about there, the speaker is about to wrap up- but I get a couple error messages.

2020/8/10 22:22:33 HTTP service (0.0.0.0:5000) 2020/08/10 22/22/33 Listen tcp 0.0.0.0:5000 bind address already in use.


FYI, I am using a different commputer from the pi, so I will not be able to send over images. Basically though, What I am trying to do is connect the ax.25 so that I can set up Winlink on two meters. There's on option to connect, and then you click on AX.25, followed by my call sign. That's where I get my second error message.

connection refused


Can anyone shed some light on this? By the way, originally the message was somewhat different. I don't remember the exact details, but I remember the words "data port". Thank you so much, if there's anything I can do to help you solve this mystery, please let me know.

• Due to the actual situation here, a question like this may get better answers on e.g. the SuperUser site? But otoh at least from the asker's perspective it is directly about ham-related software and I think other hams and radio aficionados could find it useful so it's a +1 from me. – natevw - AF7TB Aug 11 '20 at 17:15
• Since this is a computer-related technical support question, though, it would be helpful if you could add more details about that, especially what operating system you are using but also a summary of what you've done so we don't have to figure it out from the video itself. – natevw - AF7TB Aug 11 '20 at 17:18

## 1 Answer

Listen tcp 0.0.0.0:5000 bind address already in use.

This sounds like a somewhat generic error, not necessarily related to your AX.25 software itself but certainly a bummer to encounter it while setting up!

What this means is the software you're trying to run wants to listen on port 5000, on all network interfaces (the 0.0.0.0 part). But something is already listening on that port. Are you already running the same program in a different window?

Depending on your operating system, you may find the following Q&A's helpful:

connection refused

Without watching the video, this one's a little harder to guess at because you don't say what you were trying to do/run when you got this message. If you're curious in general, you might find the answers at https://serverfault.com/questions/725262/what-causes-the-connection-refused-message interesting but it's possible that once you fix the first error, then this one might go away on its own.

• thank you. I still don't have my question resolved, but I may make a follow up question. Unfortunately I don't have a lot of a lot reputation on this site, but I may still sacrifice some. – BJsgoodlife Aug 12 '20 at 2:27