How to create a restricted portable browser.

I want to share a SEO tool website with my employee. I don't want to give username and password.

Can I create something with firefox portable?
Can I restrict someone changing cookie, proxy settings in the portable app?

Any other way?

Anyone did this?

No LastPass or RDP suggestions please.

You can share firefox portable.

But there is no guarantee that your employee will not take it to some other place.

Also there is no way to restrict someone to change cookie or proxy.