By Marco Pistoia, Nataraj Nagaratnam, Larry Koved, Anthony Nadalin
Company Javaa protection: development safe J2EEa purposes offers software builders and programmers with the knowledge they should make the most of the most recent Java safety applied sciences in construction safe firm infrastructures. Written via the major Java protection specialists at IBM, this finished advisor covers the present prestige of the Javaa 2 Platform, company variation (J2EE), and Javaa 2 Platform, usual variation (J2SEa ), safeguard architectures and gives useful strategies and utilization styles to handle the demanding situations of Java protection. to help builders who have to construct safe J2EE functions, firm Javaa safety covers at size the J2EE defense applied sciences, together with the protection facets of servlets, JavaServer Pages(TM) (JSPa ), and firm JavaBeansa (EJBa )--technologies which are on the middle of the J2EE structure. moreover, the ebook covers internet prone defense. Examples and pattern code are supplied during the e-book to provide readers a superb figuring out of the underlying know-how. the connection among Java and cryptographic applied sciences is roofed in nice aspect, together with: *Java Cryptography structure (JCA) *Java Cryptography Extension (JCE) *Public-Key Cryptography criteria (PKCS) *Secure/Multipurpose web Mail Extensions (S/MIME) *Java safe Socket Extension (JSSE)
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Extra info for Enterprise Java(TM) Security: Building Secure J2EE(TM) Applications
Servlets use the Java Servlet API. By analogy, servlets are the server-side equivalent of client-side browser applets. JSP files enable the separation of the HTML coding from the business logic in Web pages, allowing HTML programmers and Java programmers to more easily collaborate in creating and maintaining pages. 2 on page 104. 3 Application Client Modules Application clients are first-tier Java-based client programs. Even though it is a regular Java application, an application client depends on an application client container to provide system services.
On less secure operating systems, a program can listen on any port. HTTP Web servers, in particular, are often run on nonstandard ports, such as 8000 or 8080, to avoid requiring the privileged standard port 80. The nonprivileged ports of 1024 and above can be used by any program; when a connection is created, a free port number will be allocated to the program. For example, a Web browser opening a connection to a Web server might be allocated port 1044 to communicate with server port 80. But what happens if a Web browser from another client also gets allocated port 1044?
Using a URL connection is easier to implement and is also likely to be the more reliable, as the Java runtime passes the URL request to the underlying application browser or WAS to process. Thus, if a proxy is defined, the Java code will automatically use it. However, URL connections suffer from the fact that the server side of the connection has limited capability; it can be only a simple file retrieval, a Common Gateway Interface (CGI) program, a servlet, or similar. net package to create socket connections to a dedicated server application.