tailieunhanh - The Best Damn Windows Server 2003 Book Period- P12

The Best Damn Windows Server 2003 Book Period- P12:The latest incarnation of Microsoft’s server product,Windows Server 2003, brings many new features and improvements that make the network administrator’s job chapter will briefly summarize what’s new in 2003 and introduce you to the four members of the Windows Server 2003 family: the Web Edition, the Standard Edition, the Enterprise Edition, and the Datacenter Edition. | 76 Chapter 3 Planning Server Roles and Server Security Securing File and Print Servers File and print servers also need additional security. In addition to setting permissions on files and folders regularly performing backups and using antivirus software organizations may also need to implement greater levels of protection such as encryption. Similarly print servers need to be protected from improper use and must be configured to prevent unauthorized users from wasting print resources. File Servers It is especially important that volumes on a file server are formatted as NTFS and appropriate permissions are set on files and folders. As an added measure of security these disks should also use EFS. EFS is used to encrypt data on NTFS volumes. When EFS is used unauthorized users and malicious programs are prevented from accessing the content of files regardless of their permissions. EFS file encryption is completely transparent to the user. Although EFS is an important part of securing a file server this does not mean that every file on the network is a candidate for being encrypted with EFS. As mentioned only files on NTFS volumes can be encrypted with EFS. If a volume is formatted as NTFS files that have the System attribute or are located in systemroot for example C Windows cannot be if the file or folder you want to encrypt is compressed you cannot use encryption. The opposite is also true if a file or folder is encrypted with EFS it cannot be compressed. Another important limitation of EFS is that it encrypts data only on NTFS volumes. When a file is accessed remotely on a file server Windows Server 2003 decrypts it and sends it across the network in unencrypted form. For data to be encrypted during transmission other technologies like IPSec must be used. IPSec ensures that data is sent securely over the network by encrypting packets and authenticating the identity of the sender and receiver. When using IPSec a policy is applied to both the sender

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