In reply to a post by jabuzzard:

Another important trick is to have your firewall/router/server rate limit connection attempts, especially if the connection is unsuccessful. Apart from anything else it can free up a surprising amount of bandwidth on your connection.

Also disable guest access, limit number of wifi users to a realistic limit and so on. All sensible little tweaks that can't hurt.

In reply to a post by jabuzzard:

Further unfortunately the manufactures of most consumer grade routers are appallingly bad at supplying any updates and if they do generally for a couple of years at most.

The Home Router Security Report 2020 [pdf] makes interesting reading.

In reply to a post by caffn8me:

The Home Router Security Report 2020 [pdf] makes interesting reading.

Thank you, it certainly does!