server security options more extreme than SSL

hey all you server experts,

I have GoDaddy hosting as my company I usually use and I'd like to find out what options are available to me with regard to mathematical security that are even more sophisticated than simply adding SSL to a domain. More than likely I won't need this, but I would still like to know what is available. I understand that using a proxy server for website page requests falls into this category as an option? Is that correct?

If so, is that it? Or do people even...

server security options more extreme than SSL

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