Zilog EZ80F91AZA User Manual download pdf (Page 60)

UM020107-1211 How to Use the HTTPS Server

ZTP Network Security SSL Plug-In

User Manual

How to Use the HTTPS Server

The SSL libraries contain an HTTPS server that can serve encrypted web pages to client

browsers. This HTTPS server is initialized by calling the

https_init API. This API

takes the same number and type of parameters as the standard HTTP server API.

For example, to initialize the standard HTTP server in ZTP, the following command is

used:

http_init(http_defmethods,httpdefheaders,website,80);

To initialize the HTTPS server, the following command is used:

https_init(http_defmethods,httpdefheaders,website,443);

The HTTPS server will be accessible to clients using the same version of the SSL hand-

shake protocol as the ZTP Network Security SSL Plug-In. Therefore, if the SSL version 2,

SSL version 3, and TLS version 1 handshake protocols have all been initialized in server

mode, the HTTPS server will be accessible to SSL clients using any of these protocol ver-

sions. For more information about initializing these different SSL protocols, see the SSL

Handshake Protocol Initialization section on page 22 and the Client Mode or Server Mode

Support section on page 24.

It is possible to have both secure and nonsecure web servers running at the same time.

However, the two webservers must be on different ports. The port number used for nonse-

cure HTTP servers is 80; for secure HTTP servers (HTTP over SSL or HTTPS), use port

443.

For more information about the HTTP (or HTTPS) server, refer to the section headed How

to Use HTTP in the Z

TP Network Security SSL Plug-In Reference Manual (RM0047).

Limitations of the ZTP HTTPS Server

Consider the following points when using the ZTP HTTPS server.

1. It could become necessary to configure your client browser to support the same ver-

sion of SSL that is used by the ZTP HTTPS server; consult the documentation for

your browser for configuration assistance. Using Microsoft Internet Explorer as an

example, navigate to

Tools →Internet Options, click the Advanced tab, and ensure

that the appropriate SSL protocols are selected. Figure 6

on page 55 displays this

Advanced tab in the Internet Options dialog in Internet Explorer.

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Zilog EZ80F91AZA User Manual Page 60