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public interface TxWrappingLocalBusiness { ** * Wraps the specified tasks in a new Transaction * * @param task * @throws IllegalArgumentException If no tasks are specified * @throws TaskExecutionException If an error occurred in invoking * {@link Callable#call()} */ void wrapInTx(Callable< >... tasks) throws IllegalArgumentException, TaskExecutionException; }

To protect files in transport, consider the use of IPSec to encrypt the files Consider using WebDAV WebDAV is implemented in Internet Information Services (IIS) and allows users to store files on the Web server If an IIS server is configured to do so, users can store EFS encrypted files on the Web server by using WebDAV Consider WebDAV communications Unlike simple file storage, WebDAV does not require that the EFS encrypted file be decrypted before transport EFS encrypted files can be transported across the network and remain encrypted..

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3. In the Properties dialog box, click the Trusts tab. 4. In the Trusts tab, shown previously in Figure 4-17, click the trust to be verified in either the Domains Trusted By This Domain (Outgoing Trusts) box or the Domains That Trust This Domain (Incoming Trusts) box, then click Properties. 5. In the Properties dialog box for the trust, shown in Figure 4-32, click Validate.

Follow these guidelines when designing secure encryption and decryption of files:

From here we can construct simple java.util.concurrent.Callable implementations that encapsulate our JPA operations, and these will all run within a transaction that starts and ends with the invocation to wrapInTx. Let s assume we have an instance called txWrapper that implements TxWrappingLocalBusiness for us.

6. In the Active Directory dialog box, shown in Figure 4-33, select one of the follow ing choices:

Disable EFS until you can develop an EFS policy. Determine who should be allowed to use EFS, and train these users. Partition the use of EFS. It is not necessary to allow all users to encrypt files. You can enable and disable EFS in a GPO and link the GPO to any container where you need to either enable or disable the use of EFS.

Select No, Do Not Validate The Incoming Trust to validate only the outgoing trust, and then click OK. Select Yes, Validate The Incoming Trust, to validate the outgoing and the incoming trust. Type the user name and password of an account with admin istrative privileges in the other domain in the User Name and Password boxes respectively. Click OK.

Persisting an entity is the act of inserting it within a database. We persist entities that have not yet been created in the database. To create an entity, we first allocate an instance of it, set its properties, and wire up any relationships it might have with other objects. In other words, we initialize an entity bean just as we would any other Java object. Once we ve done this, we can then interact with the entity manager service by calling the EntityManager.persist() method:

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7. In the Active Directory message box, a message indicates that the trust has been verified. Click OK. 8. In the Properties dialog box for the trust, click OK. 9. In the Trusts tab, click OK. To remove a trust, complete the following steps: 1. Click Start, point to Administrative Tools, and then click Active Directory Domains And Trusts. 2. In the console tree, right-click one of the domain nodes involved in the trust you want to remove, and then click Properties. 3. In the Properties dialog box, click the Trusts tab. 4. In the Trusts tab, click the trust to be removed in the Domains Trusted By This Domain (Outgoing Trusts) box, then click Remove. 5. In the Active Directory dialog box, shown in Figure 4-34, select one of the follow ing choices:

// Execute the addition of the employees, and conditional checks, // in the context of a Transaction txWrapper.wrapInTx(new Callable<Void>() { @Override public Void call() throws Exception { // Create a few plain instances final Employee dave = new Employee(ID_DAVE, NAME_DAVE); final Employee josh = new Employee(ID_JOSH, NAME_JOSH); final Employee rick = new Employee(ID_RICK, NAME_RICK); // Get the EntityManager from our test hook final EntityManager em = emHook.getEntityManager(); // Now first check if any employees are found in the underlying persistent // storage (shouldn't be) Assert .assertNull("Employees should not have been added to the EM yet", em.find(Employee.class, ID_DAVE));

If EFS will be used, harden it. This can be done by: