Found a site today that describes how to get by RSFirewall.
I'm not that technical, so I wonder if there are settings that would help prevent this?

[link removed - we do not link to hacking forums]

Just want to make sure my sites are as safe as possible.

The "bypassing" in the article is quite useless - you have to have access to the database to do it. That's actually how we suggest you disable RSFirewall! manually, straight from our docs. In other words, if somebody has access to your database (that's why it's password protected!) they can do pretty much what they want with your website. There's also a method described how to disable RSFirewall! completely. You don't need to be hacker to do that - it's information from our website. Still, it requires administrative access to your website's files, so would that mean that RSFirewall! can be bypassed? Certainly not, because if somebody has access to either the database or files, your site is already breached.
The "hackers" here were actually surprised that RSFirewall! prevented them to change administrators' passwords or add new administrator accounts and hence the reason for their topic. That's one of the reasons we've implemented such a security feature