@eddiemcdiarmid said in Firewall Advice:
Hmm interesting. I don’t have any rules but the managed of the network I’ve named ‘external network’ can see my router. Is there a rule I can add to block them being able to access my network?
Seeing your network and accessing your network are two very different things. You say both in your reply post above. The default block/deny rules on every pfsense install for the WAN interface, like @johnpoz talks about above, keeps people/hosts from accessing your network.
You don't need to do it, but if you're really paranoid about that external network, you could set a specific block rule in your WAN interface to block/deny it's IP addresses. Again, you really don't need to do it, however.
This is an example of the default settings and wording from an old version of pfsense, but I think the current versions still look like this on the WAN interface:
alt text
Jeff