Comment # 25 on bug 1160068 from jean-christophe baptiste

(In reply to Ferdinando Vivacqua from comment #24)
> (In reply to jean-christophe baptiste from comment #23)
> > Confirming the workaround of blocking TCP ports 8008 and 8009, which I did
> > with firewalld instead. Not ideal though.
> 
> Hi, can you write here how to block these ports? Thanks in advance

Something like:

sudo firewall-cmd --permanent --add-rich-rule='rule family=tcp port port="8008"
protocol="tcp" reject'
sudo firewall-cmd --permanent --add-rich-rule='rule family=tcp port port="8009"
protocol="tcp" reject'

I suggest that you install "firewall-config" if you want to have a nice GUI for
that stuff.