ipfw console messages

[calgarychris]

Hi,

I just upgraded to FreeNAS-9.3-STABLE-201503270027 and the console now displays the following:

freenas kernel: <110>ipfw: 500 Deny UDP 192.168.1.253:1024 239.255.255.250:1900 in via epair3b

and similar (epair0b) over and over every 15 seconds or so. Would anyone be able to point me in the direction of a) what might be causing it b) whether it's anything to be concerned about c) if it's not then how I can (or should) turn the logging of that message off?

.253 is the router that the FN system is connected to although I don't really understand the rest of the message and searches for ipfw haven't turned up anything.

Thanks very much!

edit: it's from the owncloud jails I installed that also have fail2ban running…any reason why I would all of a sudden be getting these messages (local traffic only, I never opened ports to access these jails)

 

[jgreco]

That's UPnP, safely ignored. Guessing it is some interaction with the fail2ban stuff. No advice on how to bludgeon it into silence, sorry.

 

[calgarychris]

Nah that's okay thanks, I'll re-install the jail and OC without fail2ban. Out of curiosity for my own learning, how do you know it's uPnP?

Thanks!

 

[jgreco]

Because it's in Class D multicast space and I remember the port number.

 

[calgarychris]

Thanks :)