Week Sixteen - A+ Guide to Managing and Maintaining Your...

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A+ Guide to Managing and Maintaining Your PC, 7e Chapter 20 Security Practices
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A+ Guide to Managing and Maintaining Your PC, 7e 2 Objectives Learn how to protect against and remove malicious software Learn how to implement security using Windows Learn how to use BIOS security features
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A+ Guide to Managing and Maintaining Your PC, 7e 3 Controlling Access to Computer Resources Types of access control – Controlling access to data folders and files – Hiding network resources – Using encryption technologies • Windows Encrypted File System (EFS) • BitLocker Encryption – Using BIOS features to control security
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Controlling Access to Data Folders and Files Permissions are assigned to individual user accounts or user groups • Vista user accounts: Administrator, Standard, Guest • Windows XP accounts: Administrator, Guest, Limited, Power User, Backup Operator • You can also create account groups Access control based on job descriptions – Create user group for each job class and assign data permissions Default user groups – Authenticated Users, Everyone, Anonymous users A+ Guide to Managing and Maintaining Your PC, 7e 4
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Controlling Access to Data Folders and Files (cont’d.) Tips on using shared folders – Monitor user permissions: consider read-only access – Use Advanced Security Settings box – Subfolder assigned inherited permissions • Change via parent folder – Permissions manually set for a subfolder or file • Override inherited permissions – Ensure each user account needs a password – Remote computer users need same user account and password A+ Guide to Managing and Maintaining Your PC, 7e 5
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Hidden Network Resources and Administrative Shares Enhance security for a computer – Disable File and Printer Sharing – Hide a shared folder: $ at end of folder name – Make Windows XP personal folders private – Local share: folders on a computer shared with others using a folder’s Properties box – Administrative shares: folders shared by default on a network that administrator accounts can access • %systemroot% folder: most likely C:\Windows • Any volume or drive: \\BlueLight\C$ – Do not share all the drives on all computers A+ Guide to Managing and Maintaining Your PC, 7e 6
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Encrypting Files and Folders Encrypting File System (EFS) certificate – Required to decrypt the files NTFS file system – Used on drive holding the encrypted file or folder EFS encryption – Public key and private key created – Recovery key created for administrator use • Unlock encrypted file or folder if user key not available A+ Guide to Managing and Maintaining Your PC, 7e 7
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A+ Guide to Managing and Maintaining Your PC, 7e 8 Encrypting Files and Folders (cont’d.) Encrypt a file or folder – Right-click folder or file, select Properties – In General tab click Advanced button – Check Encrypt contents to secure data, click OK • In Properties window click Apply • Make choice about encrypting subfolders
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Week Sixteen - A+ Guide to Managing and Maintaining Your...

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