Rita's MBP's IP address is the same as mine: 192.168.1.1.

Is that the same as the number you posted, and if so, does it negate the need for macOS's firewall?

I've run with both for a few years, and if I've been taking a hit I've never noticed it and would like to fix it.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire