Secure Remote Access Services
Secure Remote Access software has five major components:
Gateway
The SRA Gateway provides the interface and security barrier between remote user sessions originating from the Internet and a corporate intranet. Gateway presents content securely from internal web servers and application servers through a single interface to a remote user.
Web servers use web-based resources such as HTML, JavaScript and XML to communicate between the client and Gateway. Rewriter is the Gateway component used to make web content available.
Application servers use binary protocol such as telnet and FTP to communicate between the client and Gateway. Netlet, which resides on the Gateway, is used for this purpose. See Chapter 2, Working with Gateway for more detail.
Rewriter
Rewriter enables end users to browse the intranet and makes links and other URL references on those pages operate correctly. Rewriter prepends the Gateway URL in the location field of the web browser, thereby redirecting content requests through the Gateway. See Chapter 3, Working with Proxylet and Rewriter for details.
NetFile
NetFile is a file manager application that allows remote access and operation of file systems and directories. NetFile includes a Java based user interface. See Chapter 4, Working with NetFile for details.
Netlet
Netlet facilitates the running of popular or company-specific applications on remote desktops in a secure manner. After you implement Netlet at your site, users can securely run common TCP/IP services, such as Telnet and SMTP, and HTTP-based applications such as pcANYWHERE or Lotus Notes. See Chapter 5, Working with Netlet for details.
Proxylet
Proxylet is a dynamic proxy server that runs on a client machine. Proxylet redirects a URL to the Gateway. It does this by reading and modifying the proxy settings of the browser on the client machine so that they point to the local proxy server or Proxylet.
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