Using a Certificate to Authenticate a Client or Server?

When i was still an college one of the ways i was going o paying the bills, i was a member of the apache hatre project. I would do these workshops and and through that, got into this kind of, you know, business of being an amateur auditor of people's empty las set ups. And literally, in every single case i looked at, would find believably low hanging issues,. Like, like, stuff that it just didn't work at all. When you're gon yo using empty less, there's a lot of x, five, o, nine flying around, alotsing flying around.