This document introduces EntireX Security under Linux through overviews of the functionality and components of EntireX Security. The location where Broker Kernel is installed determines the functionality made available for EntireX Security.

This document covers the following topics:

• Functionality of EntireX Security

• EntireX Security Components

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Functionality of EntireX Security

This table lists the security functionality available with EntireX Security running Broker Kernel under the respective operating system.

Security Functionality	z/OS	Linux	Windows	BS2000	Comment
Authentication of user	Yes	Yes	Yes	Yes	Verify broker user ID and broker password sent by an application to the broker. Under z/OS the broker verifies a long broker password as a RACF password phrase.
User password change	Yes	No	No	No
LDAP authentication	No	Yes	Yes	No	Authenticate using LDAP repository.
Trusted user ID	Yes	No	No	No	Trusted computing base, avoiding plain text password.
Verified client user ID	Yes	No	No	Yes	Provide verified identity of client to server.
Authorization of client request	Yes	No	No	No
Authorization of server register	Yes	No	No	No
Authorize IP connection	Yes	No	No	No
Authorization rules	No	Yes	Yes	No	An authorization rule is used to perform access checks for authenticated user IDs against lists of services defined within the rule. This feature is available on z/OS, Linux and Windows using EntireX Security on these platforms. Authorization rules can be stored in the Broker attribute file or in an LDAP repository. See Authorization Rules.
SSL/TLS	(1)	Yes	Yes	No	Industry standard encryption mechanism. See SSL/TLS, HTTP(S), and Certificates with EntireX.
Using SSL Certificates for Authentication	Yes	No	No	No	See Using SSL Certificates for Authentication.

Notes:

1. Establishing an SSL/TLS connection on z/OS is done with IBM's Application Transparent Transport Layer Security (AT-TLS).

The broker acts as an agent to make the creation and operation of client/server applications simpler and more effective. Any number of server applications can be built for use by any number of clients. EntireX Security allows you to protect your server applications and clients independently. Clients and servers are authenticated by user ID and password on their first contact with the system.

EntireX Security Components

This diagram depicts the location where the broker kernel must be installed and where the broker stubs can be installed. It also depicts the location of the security components of the kernel and stubs of broker.