Hi Olly,
RSFirewall and Admin Tools have overlapping features. They do pretty much the same, in a different way. I disagree with the way RSFirewall handles requests (IMHO you should never screw around with backend requests) and php.ini settings, that's why I'm not doing that in Admin Tools Pro. If you have Admin Tools Pro you don't need RSFirewall. In fact, if you have both then I can't provide support because it will be impossible to tell which security extension causes an issue. I've had too many cases of people sending me angry support requests only to find out that the problem was caused by RSFirewall, not Admin Tools.
Regarding Lock Down mode we call it "Emergency Off-Line" and works much more efficiently and effectively.
or is your component all we need to prevent hacks?
Never, ever, should any developer in his right mind claim that his software is all you need to prevent hacks. First and foremost you need what I call a working brain: the ability to understand that security is a continuous process, not something you install and forget about it. For more information please read our Unhacking Your Site walkthrough and search the Internet for one of my numerous Joomla! Site Security presentation videos in Joomla! Days around the world. Admin Tools Professional is a tool which will help you secure your site, but it's not enough. At the very least you need to take care of ownership and permissions, run routine security audits (www.joomla-security.com is a very good third party service which I personally trust) and have automated, frequent and routinely tested backups. Be vigilant. That's how you remain secure.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!