How can I determine if this open port 4567 is a vulnerability?

[mxmaniac]

I'm very new to networking, learning through various online tutorials.

Anyways, I did an online port scan on my IP, and found out that port 4567 is open.

Now in my googling/research I've found that this can possibly be a port used by ISP's to update router firmware (in my case it would be modem firmware, I have my own router). However I also found results that trojans/malware have been known to use this port as well.

So how can I figure which it is? Is there a test I can do, or something I can check?

When I tried logging into my regular IP, with that port number, through a Tor proxy, I was greeted with a popup wanting a username and password for "webadmin"?

Thanks

 

[hextet]

Malware and trojans can use almost any port really if that port is open, they would just have to make an outbound connection to their C&C servers through that port. I googled that port number, and it seems like there are security hazards that go along with that port being open. If I were you i'd close that port.