Re: mysterious/suspicious internet activity. [solved]

[home user]

On 12/5/20 9:24 PM, Samuel Sieb wrote:
> > > and the outgoing is the firewall's rejections
> >
> > I'm no expert, but I believe the firewall can be set to utterly
> > ignore things it blocks rather than sending a rejection. Generally
> > this is more useful for things connected to the internet at large
> > since you'll just get random probes rather than torrential attacks
> > once they figure out there is something there they can try to break
> > into.
>
> The default for firewalls is to drop packets instead of rejecting them. 
>   Rejecting sends an ICMP packet back saying the connection wasn't allowed.

How do I check what is actually happening?

If the firewall is sending the ICMP packets, then how do I change it so 
it merely drops the packets?