How can a website restrict access to an application?
• Restriction by IP address, subnet, or domain name. Individual documents or whole directories are protected in such a way that only browsers connecting from certain IP (Internet) addresses, IP subnets, or domains can access them. • Restriction by user name and password. Documents or directories are protected so that the remote user has to provide a name and password in order to get access. • Encryption using public key cryptography. Both the request for the document and the document itself are encrypted in such a way that the text cannot be read by anyone but the intended recipient. Public key cryptography can also be used for reliable user verification.
