Java 2 Network Security

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Java 2 Network Security
if Java is being used to pass applets over a shared network like the
Internet, then you have to consider:
· Private network protection, using a firewall and allied security policies
· Private data protection, using encryption to shield data as it flows over
the public network
· User authentication, using digital signatures, or protected passwords
2. Secondly, Java security must be adequate. It has to be strong enough for
the purpose in hand: Java must not be the weak link. But there is no need
to spend extra money to make it far and away the strongest link, unless
one of the two following circumstances occur:
· Your potential attackers don't just want to crack your system, they want
to crack your
Java
system.
· Your users have a particular fear of Java, and you need to reassure
them (security has to match levels of threat and worry, as well as, levels
of potential loss).
3. Thirdly, Java security must be perpetual. This book will help you build a
secure Java system to face today's perils of accident and attack. But those
perils will change. So you must review your Java security as a part of
your overall security of course regularly, to stay one jump ahead of
potential attackers.
How well does Java meet those needs? Three points:
1. Java architecture permits secure design
The Java 2 security architecture allows a user to predetermine the area of
activity for any code local or remote, and enforce strict control over access
of any code to system resources. This has been made possible by the use
of the concepts of protection domains, user defined security policies and
security managers (which are described in great detail in Chapter 3, "The
New Java Security Model" on page 69).
2. Java implementations respond to error reports
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