Hands-on Guide to the Red Hat(R) Exams: RHCSATM and RHCE(R) Cert Guide and Lab Manual (Certification Guide)

Table of Contents......Page 5 Preface......Page 17 Introduction......Page 36 Starting the Installation......Page 62 An Older Install with RHEL5......Page 66 The Firstboot Process......Page 70 Verifying the Installation......Page 73 Summary......Page 74 Answers to Review Questions......Page 75 The Boot Process......Page 80 Working with GRUB......Page 84 The Config File......Page 85 The GRUB Command Line......Page 87 Runlevels......Page 88 Runlevel Utilities......Page 89 Service Management......Page 92 The Upstart Conversion......Page 97 Review Questions......Page 99 Answers to Review Questions......Page 100 Basic Partitions......Page 104 Creating a Partition......Page 108 Making a Swap Partition......Page 114 Deleting a Partition......Page 116 Logical Volume Manager......Page 118 Creating an LVM Partition......Page 122 Adjusting the Size of LVM Partitions......Page 126 Migrating Data......Page 129 Deleting an LVM Partition......Page 132 Setting Up RAID......Page 134 Creating a RAID Array......Page 135 What to Do When a Disk Fails......Page 138 Deleting a RAID Array......Page 141 Answers to Review Questions......Page 142 File System Setup......Page 146 Creating a File System......Page 147 Creating a Swap......Page 149 Mounting a File System......Page 152 Extra File System Commands......Page 158 Encryption with LUKS......Page 161 Creating Encrypted Partitions......Page 162 Setting Up Quotas......Page 165 Enabling Quotas......Page 167 File System Security......Page 170 Setting Up ACLs......Page 171 Using AutoFS......Page 174 Review Questions......Page 177 Answers to Review Questions......Page 178 Setting Up Networking......Page 182 Static IP Addresses......Page 184 Routing......Page 188 Troubleshooting Network Connections......Page 189 Networking Utilities......Page 190 Network Monitoring and Analysis......Page 192 Ethernet Bonding......Page 193 Client DNS Troubleshooting......Page 194 Summary......Page 197 Answers to Review Questions......Page 198 Working with RPM......Page 202 Installing and Removing Packages......Page 203 Querying and Verifying Packages......Page 205 Doing It Again with Yum......Page 210 Installing and Removing Packages......Page 211 Searching for Packages......Page 215 Configuring Additional Repositories......Page 216 Making Your Own RPM......Page 217 Creating an RPM......Page 218 Creating Your Own Repository......Page 221 The Red Hat Network......Page 223 Summary......Page 224 Answers to Review Questions......Page 225 Users and Groups......Page 228 Users......Page 229 Passwords......Page 232 The Password File......Page 233 The Shadow File......Page 234 The Group File......Page 237 Switching Accounts......Page 239 User-Specific Files......Page 240 Global User Configuration......Page 241 Group Collaboration......Page 242 Network User Authentication......Page 244 Review Questions......Page 248 Answers to Review Questions......Page 249 Kickstart Server Setup......Page 254 Firewall and SELinux Configuration......Page 257 Mastering Kickstart Config Files......Page 258 Advanced Partitioning......Page 260 Automating Kickstart......Page 261 TFTP Server......Page 262 PXE Boot......Page 265 Firewall and SELinux Configuration......Page 266 Other Network Installs......Page 267 Review Questions......Page 268 Answers to Review Questions......Page 269 Working with Syslog......Page 272 The Config File......Page 274 Log Rotation......Page 276 Centralized Logging......Page 277 Centralized Logging (The RHEL5 Way)......Page 279 User Login Events......Page 280 Monitoring System Performance......Page 281 Automation with cron and at......Page 285 Creating cron Jobs......Page 287 Single Jobs with at......Page 291 Review Questions......Page 294 Answers to Review Questions......Page 295 Kernel Basics......Page 298 Updating the Kernel......Page 301 Tuning the Kernel with /proc/sys......Page 305 Summary......Page 307 Answers to Review Questions......Page 308 Understanding SELinux......Page 310 File Contexts......Page 312 Service and Boolean Options......Page 316 Policy Violations......Page 319 Review Questions......Page 320 Answers to Review Questions......Page 321 Security Through TCP Wrappers......Page 324 Firewall Rules Using iptables......Page 326 Configuring iptables......Page 327 Troubleshooting Firewall Rules......Page 332 Working with NAT......Page 333 Securing Access......Page 334 PAM Troubleshooting......Page 336 Managing Password Policies......Page 337 Review Questions......Page 338 Answers to the Review Questions......Page 339 Secure SHell (SSH)......Page 342 Configuring SSH......Page 343 Firewall and SELinux Configuration......Page 346 SSH Security......Page 347 SSH Security Revisited......Page 348 Public/Private Keys......Page 349 Port Forwarding......Page 350 VNC Servers......Page 351 Connecting Clients......Page 353 Answers to Review Questions......Page 354 Installing Apache......Page 358 Configuring the Web Server......Page 359 Firewall and SELinux Configuration......Page 362 Troubleshooting Apache......Page 365 Host-Based Security......Page 367 User-Based Security......Page 369 Setting Up HTTPS......Page 372 CGI Applications......Page 374 Virtual Hosts......Page 375 Squid Web Proxy......Page 376 Configuring the Proxy......Page 377 Firewall and SELinux Configuration......Page 378 Web Proxy Security......Page 379 Review Questions......Page 380 Answers to Review Questions......Page 381 Network File Systems......Page 384 Installing an NFS Server......Page 385 Configuring NFS......Page 386 Firewall and SELinux Configuration......Page 391 NFS Security......Page 393 Troubleshooting NFS......Page 394 Connecting Clients......Page 397 Answers to Review Questions......Page 399 Samba......Page 402 Configuring Samba......Page 403 Samba Clients......Page 410 Summary......Page 412 Answers to Review Questions......Page 413 File Transfer Protocol......Page 416 Configuring vsftp......Page 417 Firewall and SELinux Configuration......Page 419 FTP Security......Page 421 Troubleshooting FTP......Page 422 Review Questions......Page 423 Answers to Review Questions......Page 424 Setting Up BIND......Page 426 Firewall and SELinux Configuration......Page 427 Configuring a DNS Server......Page 429 Master Server......Page 430 Slave Server......Page 434 Caching-Only Server......Page 437 DNS Utilities and Troubleshooting......Page 439 BIND Security......Page 445 Review Questions......Page 450 Answers to Review Questions......Page 451 Xinetd: The Master Service......Page 454 Installing a DHCP Server......Page 459 Configuring the DHCP Server......Page 460 Security Configuration......Page 464 Troubleshooting DHCP......Page 465 Network Time Protocol......Page 466 Configuring NTP......Page 467 Firewall and SELinux Configuration......Page 469 NTP Security......Page 470 Troubleshooting NTP......Page 471 Answers to Review Questions......Page 472 SMTP with Postfix......Page 476 Configuring Postfix......Page 478 Firewall and SELinux Configuration......Page 482 Postfix Security......Page 483 Alias Mapping......Page 484 Configuring Dovecot......Page 485 Firewall and SELinux Configuration......Page 486 Dovecot Security......Page 487 Testing the Mail Server......Page 489 Summary......Page 491 Answers to Review Questions......Page 492 I Lost My Root User Password......Page 496 The MBR Is Corrupt......Page 497 The Partition or Root File System Can’t Be Found......Page 498 The Superblock Has Become Corrupt......Page 499 Users Can’t Create Files in Their Home Directories......Page 500 I Can’t Access Service X......Page 501 I Get the Error Message “No Route to Host”......Page 502 Summary......Page 503 Setting Up the Physical Host......Page 506 Installing a Virtual Client......Page 507 Managing a Virtual Client......Page 510 Monitoring Virtual Resources......Page 512 Review Questions......Page 513 Answers to Review Questions......Page 514 Lab Exam 1......Page 516 Lab Exam 2......Page 518 B......Page 520 C......Page 521 D......Page 523 E......Page 524 H......Page 525 J-K......Page 526 M......Page 527 O-P......Page 528 S......Page 530 U......Page 533 V......Page 534 X-Y-Z......Page 535

Master every topic on Red Hat’s new RHCSATM and RHCE® exams.

• Assess your knowledge and focus your learning.
• Get the practical workplace knowledge you need!

Start-to-finish RHCSATM and RHCE® preparation from leading Linux system administrator, IT trainer, and certification expert Damian Tommasino!

Master every RHCSATM and RHCE® topic!

• Red Hat Enterprise Linux 6 local and network installation
• System services, runlevels, and bootup
• Disks, partitions, and file systems, including LUKS encryption
• Networking
• Package management
• User administration
• Logging, monitoring, and automation
• Kernel updates and tuning
• Security, including SELinux, firewalls, and policies
• Remote access, including SSH
• Apache, Squid, DNS, DHCP, NTP, and email
• NFS and Samba
• Client and network troubleshooting
• KVM virtualization

Test your knowledge, build your confidence, and succeed!

• 22 hands-on RHCSATM and RHCE® Labs, each with multiple real-world tasks
• Downloadable troubleshooting scripts
• Practical tutorials and real-world tips
• Exam tips
• Red Hat Enterprise Linux 6 Command Quick Reference
• Exclusive Red Hat exam prep advice and task lists
• Two full length lab-based practice exams

Damian Tommasino (RHCE, RHCSA, MCSA, CCNA, CCENT, MCP, Security+, Network+, A+) is a Linux system administrator at TradeCard and CEO of Modular Learning Inc., an online IT training company. He blogs on Red Hat, Linux, and security at Security Nut (http://secnut.blogspot.com), and actively contributes to the popular IT exam certification forums at techexams.net.