Port 4567

What is this port used for?
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Based on my research it is a port used by malware and/or spyware; not a legitimate service, unless you have configured it as such.

I would try and run a malware scan using one of the following tools, if you're worried:

1) http://www.malwarebytes.org/
2) http://www.safer-networking.org/
3) http://www.bleepingcomputer.com/download/combofix/
4) http://www.surfright.nl/en/hitmanpro/
Dave BaldwinFixer of ProblemsCommented:
Apparently it is used by Verizon at least to send updates to some devices.  http://www.dslreports.com/forum/r20511704-Westell-6100-F90-port-4567

The 'official' list of assigned ports is here http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xml but it takes forever to load.
Hm, interesting. The only way that would show up on a server/computer then is a Verizon dongle was used (maybe as internet failover)?
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Dave BaldwinFixer of ProblemsCommented:
One article said that it showed up in an 'online' security scan which actually checks the modem and not necessarily the computer connected to it.

Interesting, well, it seems a Verizon device is definitely used though; that would explain it. I have so far not used a Verizon device (other than a smartphone) in conjunction with a computer. Good to know though.
How are you seeing that port in use?

It is a high port (> 1023), which means if an application requests a non-specific port it could  be randomly chosen.

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