[Koha] Koha Intranet v Internet

Hello. I am evaluating solutions for Internet access to library resources for kids with special needs. The library resources are centralised (a functioning school library) but the users are geographically remote. The server will be hosted off site (at ISP premises to maximise bandwidth for Internet connectivity) and so will need to be managed via Internet. So far, I know next-to-nothing about library systems but have reasonable technical expertise with Linux and networking... and happy to put in some effort. Given the (very limited ;^) information above, do you think Koha might be suitable for our needs? What is the difference between Koha Internet v intranet...? Thanks :-) R.