O'Reilly - Practical UNIX & Internet Sec... 7015KB

More documents

Recommendations

Info

[Chapter 7] Backups Another Tale of Backup Woe One apocryphal story we saw on the net several years ago concerned a system administrator who tried to do the right thing. Every week, he'd make a full backup of his system. He would test the backups to be certain the tapes were readable. Then he would throw them into the passenger seat of his car and he'd drive home, where he would store the tapes in a fireproof safe. All proceeded without incident for many months until there was a major disaster of some sort that destroyed the computer room. Our would-be hero felt quite relieved that he had these valuable backups in a safe place. So, after an alternate site was identified, he drove home and retrieved some of the tapes. Unfortunately, the tapes contained no usable data. All the data was lost. The problem? It seems that these events occurred in the far north, during the winter. The administrator's car had heater wires in the car seats, and the current passing through the wires degaussed the data on the tapes that he stored on the passenger seat during the long ride home. Is it true? Possibly. But even if not, the lessons are sound ones: test your backup tapes after subjecting them to whatever treatment you would expect for a tape you would need to use, and exercise great care in how you store and transport the tapes The use of encryption can dramatically improve the security for backup tapes. However, if you do choose to encrypt your backup tapes, be sure that the encryption key is known by more than one person. You may wish to escrow your key (see the sidebar entitled "A Note About Key Escrow" in Chapter 6, Cryptography). Otherwise, the backups may be worthless if the only person with the key forgets it, becomes incapacitated, or decides to hold your data for ransom. Here are some ideas for storing a backup tape's encryption key: ● ● ● ● Always use the same key. Physical security of your backup tape should be your first line of defense. Store copies of the key on pieces of paper in envelopes. Give the envelopes to each member of the organization's board of directors, or chief officers. If your organization uses an encryption system such as PGP that allows a message to be encrypted for multiple recipients, encrypt and distribute the backup encryption key so that it can be decrypted by anyone on the board. Alternatively, you might consider a secret-sharing system, so that the key can be decrypted by any two or three board members working together, but not by any board member on his own. 7.1.7 Legal Issues Finally, some firms should be careful about backing up too much information, or holding it for too long. Recently, backup tapes have become targets in lawsuits and criminal investigations. Backup tapes can be obtained by subpoena or during discovery in lawsuits. If your organization has a policy regarding the destruction of old paper files, you should extend this policy to backup tapes as well. You may wish to segregate potentially sensitive data so that it is stored on separate backup tapes. For file:///C|/Oreilly Unix etc/O'Reilly Reference Library/networking/puis/ch07_01.htm (11 of 12) [2002-04-12 10:44:08]
[Chapter 7] Backups example, you can store applications on one tape, pending cases on another tape, and library files and archives on a third. Back up your data, but back up with caution. III. System Security 7.2 Sample Backup Strategies [ Library Home | DNS & BIND | TCP/IP | sendmail | sendmail Reference | Firewalls | Practical Security ] file:///C|/Oreilly Unix etc/O'Reilly Reference Library/networking/puis/ch07_01.htm (12 of 12) [2002-04-12 10:44:08]
Page 1 and 2:
Practical UNIX & Internet Security
Page 3 and 4:
Index Search | Symbols | A | B | C
Page 5 and 6:
Page 7 and 8:
Index 8.8.3.1. Joetest: a simple pa
Page 9 and 10:
Index American Society for Industri
Page 11 and 12:
Index who is logged in 10.1.2. utmp
Page 13 and 14:
Page 15 and 16:
Index 11.1. Programmed Threats: Def
Page 17 and 18:
Index modems and : 14.5.1. Hooking
Page 19 and 20:
Page 21 and 22:
Index scripts 18.2. Running a Secur
Page 23 and 24:
Index 26.2.2. Federal Jurisdiction
Page 25 and 26:
Index contacting administrator of :
Page 27 and 28:
Index E.4.3. COPS (Computer Oracle
Page 29 and 30:
Index 14.4.4.2. Protection against
Page 31 and 32:
Page 33 and 34:
Index denial-of-service attacks 1.5
Page 35 and 36:
Index Digital Signature Algorithm :
Page 37 and 38:
Index domains : 19.4.3. NIS Domains
Page 39 and 40:
Page 41 and 42:
Index embedded commands : (see comm
Page 43 and 44:
Index 8.6. The UNIX Encrypted Passw
Page 45 and 46:
Index /etc/halt command : 24.2.6. A
Page 47 and 48:
Index eavesdropping by : 12.3.1.2.
Page 49 and 50:
Page 51 and 52:
Index locating largest : 25.2.2.1.
Page 53 and 54:
Index checklist for : A.1.1.20. Cha
Page 55 and 56:
Index 11.1.2. Back Doors and Trap D
Page 57 and 58:
Index GIDs (group identifiers) 1.4.
Page 59 and 60:
Page 61 and 62:
Index 24.4.1.5. Changes to the /etc
Page 63 and 64:
Index 17.1.3. The /etc/inetd Progra
Page 65 and 66:
Index Internet Packet Exchange (IPX
Page 67 and 68:
Page 69 and 70:
Index keyserv process 19.3.1.1. Pro
Page 71 and 72:
Page 73 and 74:
Index vendor liability : 18.5.2. Tr
Page 75 and 76:
Index per-site : 10.7.1. Per-Site L
Page 77 and 78:
Index passwords : 3.3. Entering You
Page 79 and 80:
Index lsof program : 25.2.2.7. Hidd
Page 81 and 82:
Index sending via CGI scripts : 18.
Page 83 and 84:
Index message flooding : 25.3.2. Me
Page 85 and 86:
Index Muffet, Alec : 10.5.3.1. Bewa
Page 87 and 88:
Index national security : 26.2.2. F
Page 89 and 90:
Index passwords for : 17.4. Securit
Page 91 and 92:
Index checklist for : A.1.1.19. Cha
Page 93 and 94:
Index nonrepudiation : 6.5. Message
Page 95 and 96:
Index open command : 23.2. Tips on
Page 97 and 98:
Page 99 and 100:
Index avoiding conventional 8.8. Ad
Page 101 and 102:
Index 23.4. Tips on Writing SUID/SG
Page 103 and 104:
Index 5.3.2. Common umask Values UU
Page 105 and 106:
Index 2.3. Cost-Benefit Analysis 2.
Page 107 and 108:
Index privacy 2.1. Planning Your Se
Page 109 and 110:
Index ps command 6.6.2. des: The Da
Page 111 and 112:
Page 113 and 114:
Index 7.4.5. Backups Across the Net
Page 115 and 116:
Index FTP : 17.3.2.5. Restricting F
Page 117 and 118:
Index immutable files and : 9.1.1.
Page 119 and 120:
Page 121 and 122:
Index 9.1.2. Read-only Filesystems
Page 123 and 124:
Index 7.1.6. Security for Backups 7
Page 125 and 126:
Index 17.3.4. Simple Mail Transfer
Page 127 and 128:
Index on directories : 5.5.6. SGID
Page 129 and 130:
Index Simple Network Management Pro
Page 131 and 132:
Index Software Publishers Associati
Page 133 and 134:
Index string command : 12.3.5.2. X
Page 135 and 136:
Index SURFnet : F.3.4.25. Netherlan
Page 137 and 138:
Index message authentication : 6.5.
Page 139 and 140: Index Search | Symbols | A | B | C
Page 141 and 142: Index versus rlogin : 17.3.18. rlog
Page 143 and 144: Index 8.4.3. Finding Dormant Accoun
Page 145 and 146: Index 18.5. Risks of Web Browsers 1
Page 147 and 148: Index transmitters, radio : 12.2.1.
Page 151 and 152: Index processes : (see processes) p
Page 153 and 154: Index 8.4. Managing Dormant Account
Page 155 and 156: Index /usr/sbin/rexecd : (see rexec
Page 159 and 160: Index bacteria programs : 11.1.7. B
Page 161 and 162: Index 18.2.5. Other Issues authenti
Page 163 and 164: Index WRITE= command : 15.5.2. Perm
Page 167 and 168: [Chapter 12] 12.3 Protecting Data 1
Page 169 and 170: [Chapter 12] 12.3 Protecting Data M
Page 171 and 172: [Chapter 12] 12.3 Protecting Data O
Page 173 and 174: [Chapter 12] 12.3 Protecting Data p
Page 175 and 176: [Chapter 12] 12.3 Protecting Data t
Page 177 and 178: [Chapter 16] TCP/IP Networks connec
Page 179 and 180: [Chapter 16] TCP/IP Networks organi
Page 181 and 182: [Chapter 7] Backups Making backups
Page 183 and 184: [Chapter 7] Backups circumstances.[
Page 185 and 186: [Chapter 7] Backups ● An incremen
Page 187 and 188: [Chapter 7] Backups or other proble
Page 189: [Chapter 7] Backups damage or destr
Page 193 and 194: [Chapter 5] 5.2 Using File Permissi
Page 201 and 202: [Chapter 17] 17.3 Primary UNIX Netw
Page 205 and 206: To set up anonymous FTP, you must c
Page 229 and 230: [Chapter 15] UUCP 15. UUCP Contents
Page 231 and 232: [Chapter 15] UUCP You can also use
Page 233 and 234: [Chapter 15] UUCP After the files a
Page 235 and 236: [Chapter 5] The UNIX Filesystem 5.1
Page 237 and 238: [Chapter 5] The UNIX Filesystem con
Page 239 and 240: Note that we said "usually." A clev
Page 241 and 242:
[Chapter 5] The UNIX Filesystem 10.
Page 243 and 244:
[Chapter 19] 19.4 Sun's Network Inf
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
[Chapter 11] 11.5 Protecting Yourse
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
field is matched by the cron daemon
Page 257 and 258:
Page 259 and 260:
[Chapter 18] 18.2 Running a Secure
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
[Chapter 20] 20.2 Server-Side NFS S
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
[Chapter 19] 19.5 Sun's NIS+ Entiti
Page 275 and 276:
[Chapter 19] 19.5 Sun's NIS+ Like U
Page 277 and 278:
[Chapter 19] 19.5 Sun's NIS+ Enter
Page 279 and 280:
[Chapter 26] 26.4 Other Liability 2
Page 281 and 282:
[Chapter 26] 26.4 Other Liability
Page 283 and 284:
[Chapter 26] 26.4 Other Liability c
Page 285 and 286:
[Chapter 26] 26.4 Other Liability l
Page 287 and 288:
[Chapter 1] 1.4 Security and UNIX s
Page 289 and 290:
[Chapter 1] 1.4 Security and UNIX A
Page 291 and 292:
[Chapter 2] Policies and Guidelines
Page 293 and 294:
[Chapter 2] Policies and Guidelines
Page 295 and 296:
[Chapter 17] 17.2 Controlling Acces
Page 297 and 298:
[Chapter 13] 13.2 On the Job 13.2 O
Page 299 and 300:
[Chapter 13] 13.2 On the Job has ph
Page 301 and 302:
[Chapter 12] 12.2 Protecting Comput
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
[Chapter 8] Defending Your Accounts
Page 317 and 318:
Page 319 and 320:
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
[Chapter 15] 15.4 Security in Versi
Page 327 and 328:
Page 329 and 330:
Page 331 and 332:
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
[Chapter 23] 23.2 Tips on Avoiding
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
[Chapter 10] 10.3 Program-Specific
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
[Chapter 18] 18.4 Avoiding the Risk
Page 353 and 354:
[Chapter 10] 10.2 The acct/pacct Pr
Page 355 and 356:
[Chapter 3] Users and Passwords Cha
Page 357 and 358:
[Chapter 3] Users and Passwords Alt
Page 359 and 360:
[Chapter 8] 8.8 Administrative Tech
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
[Chapter 8] 8.4 Managing Dormant Ac
Page 369 and 370:
# Gives a list of users who have no
Page 371 and 372:
[Chapter 8] 8.7 One-Time Passwords
Page 373 and 374:
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
[Chapter 24] 24.4 Cleaning Up After
Page 381 and 382:
[Chapter 24] 24.4 Cleaning Up After
Page 383 and 384:
[Appendix A] UNIX Security Checklis
Page 385 and 386:
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
Page 393 and 394:
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
Page 401 and 402:
Page 403 and 404:
[Chapter 3] 3.6 The Care and Feedin
Page 405 and 406:
Page 407 and 408:
Page 409 and 410:
[Chapter 3] 3.3 Entering Your Passw
Page 411 and 412:
[Chapter 10] 10.7 Handwritten Logs
Page 413 and 414:
[Chapter 10] 10.7 Handwritten Logs
Page 415 and 416:
[Chapter 4] Users, Groups, and the
Page 417 and 418:
Page 419 and 420:
Page 421 and 422:
Page 423 and 424:
[Chapter 16] 16.2 IPv4: The Interne
Page 425 and 426:
Page 427 and 428:
Page 429 and 430:
Page 431 and 432:
Page 433 and 434:
Page 435 and 436:
Page 437 and 438:
[Appendix F] Organizations F. Organ
Page 439 and 440:
[Appendix F] Organizations F.1.5 In
Page 441 and 442:
[Appendix F] Organizations http://w
Page 443 and 444:
[Chapter 19] 19.3 Secure RPC (AUTH_
Page 445 and 446:
Page 447 and 448:
Page 449 and 450:
[Appendix C] C.4 The kill Command
Page 451 and 452:
[Chapter 15] 15.7 Early Security Pr
Page 453 and 454:
[Chapter 6] 6.4 Common Cryptographi
Page 455 and 456:
Diffie-Hellman Key exchange protoco
Page 457 and 458:
Page 459 and 460:
Page 461 and 462:
the modular inverse of e mod (n). I
Page 463 and 464:
Page 465 and 466:
Page 467 and 468:
[Appendix F] F.3 Emergency Response
Page 469 and 470:
Page 471 and 472:
Page 473 and 474:
Page 475 and 476:
Page 477 and 478:
[Chapter 8] 8.5 Protecting the root
Page 479 and 480:
[Chapter 11] Protecting Against Pro
Page 481 and 482:
Page 483 and 484:
Page 485 and 486:
Page 487 and 488:
Page 489 and 490:
[Chapter 9] 9.2 Detecting Change 9.
Page 491 and 492:
[Chapter 9] 9.2 Detecting Change {
Page 493 and 494:
[Chapter 9] 9.2 Detecting Change it
Page 495 and 496:
[Chapter 14] 14.6 Additional Securi
Page 497 and 498:
[Chapter 14] 14.3 The RS-232 Serial
Page 499 and 500:
[Chapter 14] 14.3 The RS-232 Serial
Page 501 and 502:
[Chapter 14] 14.5 Modems and UNIX C
Page 503 and 504:
[Chapter 14] 14.5 Modems and UNIX u
Page 505 and 506:
[Chapter 14] 14.5 Modems and UNIX I
Page 507 and 508:
[Chapter 14] 14.5 Modems and UNIX
Page 509 and 510:
[Chapter 16] 16.3 IP Security Ether
Page 511 and 512:
[Chapter 16] 16.3 IP Security that
Page 513 and 514:
[Chapter 7] 7.4 Software for Backup
Page 515 and 516:
Page 517 and 518:
Page 519 and 520:
[Chapter 1] 1.3 History of UNIX was
Page 521 and 522:
[Chapter 1] 1.3 History of UNIX qui
Page 523 and 524:
[Chapter 1] 1.3 History of UNIX Des
Page 525 and 526:
[Chapter 2] 2.2 Risk Assessment 2.2
Page 527 and 528:
[Chapter 2] 2.2 Risk Assessment 2.2
Page 529 and 530:
[Chapter 2] 2.5 The Problem with Se
Page 531 and 532:
[Chapter 2] 2.5 The Problem with Se
Page 533 and 534:
[Chapter 19] 19.2 Sun's Remote Proc
Page 535 and 536:
[Chapter 19] 19.2 Sun's Remote Proc
Page 537 and 538:
[Chapter 25] 25.2 Overload Attacks
Page 539 and 540:
Page 541 and 542:
Page 543 and 544:
Page 545 and 546:
Page 547 and 548:
Page 549 and 550:
[Chapter 23] 23.8 Picking a Random
Page 551 and 552:
[Chapter 4] 4.3 su: Changing Who Yo
Page 553 and 554:
Page 555 and 556:
Page 557 and 558:
[Chapter 10] Auditing and Logging C
Page 559 and 560:
[Chapter 10] Auditing and Logging v
Page 561 and 562:
[Chapter 10] Auditing and Logging f
Page 563 and 564:
[Chapter 10] Auditing and Logging f
Page 565 and 566:
[Chapter 10] Auditing and Logging 1
Page 567 and 568:
[Chapter 23] 23.3 Tips on Writing N
Page 569 and 570:
[Chapter 3] 3.2 Passwords 3.2 Passw
Page 571 and 572:
[Chapter 3] 3.2 Passwords that runs
Page 573 and 574:
[Chapter 3] 3.2 Passwords 3.2.6 Con
Page 575 and 576:
[Chapter 19] 19.6 Kerberos 19.6.1 K
Page 577 and 578:
[Chapter 19] 19.6 Kerberos ● ●
Page 579 and 580:
[Chapter 19] 19.6 Kerberos electron
Page 581 and 582:
[Chapter 19] 19.6 Kerberos But Kerb
Page 583 and 584:
[Chapter 6] 6.5 Message Digests and
Page 585 and 586:
Page 587 and 588:
Page 589 and 590:
[Chapter 23] 23.5 Tips on Using Pas
Page 591 and 592:
[Chapter 2] 2.4 Policy 2.4 Policy C
Page 593 and 594:
[Chapter 2] 2.4 Policy 2.4.3 Guidel
Page 595 and 596:
[Chapter 2] 2.4 Policy Spaf's first
Page 597 and 598:
[Chapter 11] 11.3 Authors 11.3 Auth
Page 599 and 600:
[Chapter 7] 7.3 Backing Up System F
Page 601 and 602:
[Chapter 7] 7.3 Backing Up System F
Page 603 and 604:
to: [Chapter 15] 15.6 Additional Se
Page 605 and 606:
[Chapter 6] 6.2 What Is Encryption?
Page 607 and 608:
[Chapter 27] Who Do You Trust? Chap
Page 609 and 610:
[Chapter 27] Who Do You Trust? 27.1
Page 611 and 612:
[Chapter 27] Who Do You Trust? 26.4
Page 613 and 614:
[Chapter 13] Personnel Security con
Page 615 and 616:
[Chapter 3] 3.4 Changing Your Passw
Page 617 and 618:
[Chapter 9] Integrity Management Ch
Page 619 and 620:
[Chapter 9] Integrity Management 9.
Page 621 and 622:
[Chapter 9] Integrity Management th
Page 623 and 624:
[Chapter 24] 24.2 Discovering an In
Page 625 and 626:
Page 627 and 628:
Page 629 and 630:
Page 631 and 632:
Page 633 and 634:
[Chapter 26] 26.2 Criminal Prosecut
Page 635 and 636:
Page 637 and 638:
Page 639 and 640:
Page 641 and 642:
[Chapter 24] 24.5 An Example If the
Page 643 and 644:
[Chapter 7] 7.2 Sample Backup Strat
Page 645 and 646:
Page 647 and 648:
Page 649 and 650:
[Chapter 10] 10.8 Managing Log File
Page 651 and 652:
Chapter 6 Cryptography 6.6 Encrypti
Page 653 and 654:
[Chapter 6] 6.6 Encryption Programs
Page 655 and 656:
Page 657 and 658:
Page 659 and 660:
Page 661 and 662:
Page 663 and 664:
Page 665 and 666:
[Chapter 21] Firewalls 21.1 What's
Page 667 and 668:
[Chapter 21] Firewalls connections
Page 669 and 670:
[Chapter 21] Firewalls kernel will
Page 671 and 672:
[Chapter 21] Firewalls If you allow
Page 673 and 674:
[Chapter 21] Firewalls ● ● Runs
Page 675 and 676:
[Chapter 14] Telephone Security Cha
Page 677 and 678:
[Chapter 10] 10.6 Swatch: A Log Fil
Page 679 and 680:
[Chapter 10] 10.6 Swatch: A Log Fil
Page 681 and 682:
[Chapter 14] 14.4 Modems and Securi
Page 683 and 684:
Page 685 and 686:
Page 687 and 688:
[Chapter 8] 8.6 The UNIX Encrypted
Page 689 and 690:
[Chapter 8] 8.6 The UNIX Encrypted
Page 691 and 692:
[Chapter 17] TCP/IP Services Chapte
Page 693 and 694:
[Chapter 17] TCP/IP Services to the
Page 695 and 696:
[Chapter 17] TCP/IP Services daytim
Page 697 and 698:
[Chapter 5] 5.6 Device Files consol
Page 699 and 700:
[Chapter 15] 15.5 Security in BNU U
Page 701 and 702:
Page 703 and 704:
Page 705 and 706:
Page 707 and 708:
[Appendix C] C.5 Starting Up UNIX a
Page 709 and 710:
[Chapter 26] Computer Security and
Page 711 and 712:
[Chapter 24] Discovering a Break-in
Page 713 and 714:
[Chapter 24] Discovering a Break-in
Page 715 and 716:
[Chapter 24] 24.6 Resuming Operatio
Page 717 and 718:
[Chapter 25] 25.3 Network Denial of
Page 719 and 720:
[Chapter 25] 25.3 Network Denial of
Page 721 and 722:
[Preface] Which UNIX System? Which
Page 723 and 724:
[Preface] Which UNIX System? to pro
Page 725 and 726:
[Appendix D] Paper Sources D. Paper
Page 727 and 728:
[Appendix D] Paper Sources Sebastop
Page 729 and 730:
[Appendix D] Paper Sources D.1.6 Cr
Page 731 and 732:
[Appendix D] Paper Sources Pfleeger
Page 733 and 734:
[Appendix D] Paper Sources year pri
Page 735 and 736:
[Appendix D] Paper Sources C.5 Star
Page 737 and 738:
[Appendix C] UNIX Processes such as
Page 739 and 740:
[Appendix C] UNIX Processes root 20
Page 741 and 742:
[Appendix C] UNIX Processes michell
Page 743 and 744:
[Appendix B] B.3 SUID and SGID File
Page 745 and 746:
Page 747 and 748:
Page 749 and 750:
Page 751 and 752:
[Chapter 1] Introduction HACKER nou
Page 753 and 754:
[Chapter 1] Introduction policies.
Page 755 and 756:
[Chapter 23] Writing Secure SUID an
Page 757 and 758:
[Chapter 23] Writing Secure SUID an
Page 759 and 760:
[Chapter 27] 27.2 Can You Trust You
Page 761 and 762:
Page 763 and 764:
Page 765 and 766:
[Appendix E] Electronic Resources A
Page 767 and 768:
[Appendix E] Electronic Resources y
Page 769 and 770:
[Appendix E] Electronic Resources E
Page 771 and 772:
Preface ● ● ● [1] "Securing t
Page 773 and 774:
Preface administrator or manager. I
Page 775 and 776:
[Chapter 25] Denial of Service Atta
Page 777 and 778:
[Chapter 2] 2.3 Cost-Benefit Analys
Page 779 and 780:
[Chapter 2] 2.3 Cost-Benefit Analys
Page 781 and 782:
[Chapter 6] 6.7 Encryption and U.S.
Page 783 and 784:
[Chapter 6] 6.7 Encryption and U.S.
Page 785 and 786:
[Chapter 5] 5.5 SUID ------s--- SGI
Page 787 and 788:
[Chapter 5] 5.5 SUID learn more abo
Page 789 and 790:
[Chapter 5] 5.5 SUID filesystem bou
Page 791 and 792:
[Chapter 5] 5.9 Oddities and Dubiou
Page 793 and 794:
[Chapter 5] 5.9 Oddities and Dubiou
Page 795 and 796:
[Appendix E] E.4 Software Resources
Page 797 and 798:
Page 799 and 800:
Page 801 and 802:
[Chapter 27] 27.3 Can You Trust Peo
Page 803 and 804:
[Chapter 27] 27.3 Can You Trust Peo
Page 805 and 806:
[Chapter 18] WWW Security Chapter 1
Page 807 and 808:
[Chapter 18] WWW Security There are
Page 809 and 810:
[Chapter 15] 15.2 Versions of UUCP
Page 811 and 812:
[Chapter 8] 8.2 Monitoring File For
Page 813 and 814:
[Chapter 5] 5.8 chgrp: Changing a F
Page 815 and 816:
[Appendix C] C.2 Creating Processes
Page 817 and 818:
[Chapter 8] 8.3 Restricting Logins
Page 819 and 820:
[Chapter 5] 5.7 chown: Changing a F
Page 821 and 822:
[Chapter 23] 23.4 Tips on Writing S
Page 823 and 824:
[Chapter 26] 26.3 Civil Actions As
Page 825 and 826:
[Appendix E] E.3 WWW Pages E.3.4 NI
Page 827 and 828:
[Chapter 18] 18.6 Dependence on Thi
Page 829 and 830:
[Chapter 10] 10.5 The UNIX System L
Page 831 and 832:
Page 833 and 834:
Page 835 and 836:
[Chapter 6] Cryptography 6. Cryptog
Page 837 and 838:
[Chapter 6] Cryptography The revela
Page 839 and 840:
[Chapter 10] 10.4 Per-User Trails i
Page 841 and 842:
[Chapter 11] 11.2 Damage 11.2 Damag
Page 843 and 844:
[Chapter 1] 1.2 What Is an Operatin
Page 845 and 846:
[Chapter 19] 19.7 Other Network Aut
Page 847 and 848:
[Chapter 16] 16.4 Other Network Pro
Page 849 and 850:
[Chapter 5] 5.4 Using Directory Per
Page 851 and 852:
[Chapter 1] 1.5 Role of This Book 1
Page 853 and 854:
[Chapter 23] 23.7 UNIX Pseudo-Rando
Page 855 and 856:
[Chapter 11] 11.6 Protecting Your S
Page 857 and 858:
[Chapter 11] 11.6 Protecting Your S
Page 859 and 860:
[Chapter 12] 12.4 Story: A Failed S
Page 861 and 862:
[Chapter 13] 13.3 Outsiders 13.3 Ou
Page 863 and 864:
[Chapter 6] 6.3 The Enigma Encrypti
Page 865 and 866:
[Chapter 17] 17.4 Security Implicat
Page 867 and 868:
[Chapter 17] 17.4 Security Implicat
Page 869 and 870:
[Chapter 4] 4.2 Special Usernames 4
Page 871 and 872:
[Chapter 4] 4.2 Special Usernames 4
Page 873 and 874:
[Chapter 20] NFS 20. NFS Contents:
Page 875 and 876:
[Chapter 20] NFS The NFS Version 3
Page 877 and 878:
[Chapter 20] NFS the RPC program nu
Page 879 and 880:
[Chapter 20] NFS If the NFS client
Page 881 and 882:
[Chapter 20] NFS the clients virtua
Page 883 and 884:
[Chapter 20] NFS [ Library Home | D
Page 885 and 886:
[Chapter 15] 15.3 UUCP and Security
Page 887 and 888:
[Chapter 21] 21.4 Setting Up the Ga
Page 889 and 890:
Page 891 and 892:
Page 893 and 894:
[Chapter 21] 21.5 Special Considera
Page 895 and 896:
[Appendix G] Table of IP Services A
Page 897 and 898:
[Appendix G] Table of IP Services 2
Page 899 and 900:
[Appendix G] Table of IP Services 1
Page 901 and 902:
[Appendix G] Table of IP Services h
Page 903 and 904:
[Appendix G] Table of IP Services F
Page 905 and 906:
[Chapter 20] 20.4 Improving NFS Sec
Page 907 and 908:
Page 909 and 910:
Page 911 and 912:
[Chapter 15] 15.8 UUCP Over Network
Page 913 and 914:
[Chapter 23] 23.6 Tips on Generatin
Page 915 and 916:
[Chapter 5] 5.3 The umask 0666 defa
Page 917 and 918:
[Chapter 23] 23.9 A Good Random See
Page 919 and 920:
[Chapter 23] 23.9 A Good Random See
Page 921 and 922:
[Chapter 12] Physical Security as d
Page 923 and 924:
[Chapter 17] 17.6 Network Scanning
Page 925 and 926:
[Chapter 24] 24.3 The Log Files: Di
Page 927 and 928:
[Chapter 18] 18.5 Risks of Web Brow
Page 929 and 930:
[Chapter 18] 18.5 Risks of Web Brow
Page 931 and 932:
[Chapter 22] 22.4 SOCKS Figure 22.1
Page 933 and 934:
22.4.5 SOCKS Identification Policy
Page 935 and 936:
[Chapter 22] 22.4 SOCKS Obviously,
Page 937 and 938:
[Chapter 22] 22.4 SOCKS [ Library H
Page 939 and 940:
[Chapter 20] 20.3 Client-Side NFS S
Page 941 and 942:
[Appendix F] F.2 U. S. Government O
Page 943 and 944:
[Chapter 17] 17.5 Monitoring Your N
Page 945 and 946:
[Chapter 19] RPC, NIS, NIS+, and Ke
Page 947 and 948:
[Chapter 19] RPC, NIS, NIS+, and Ke
Page 949 and 950:
[Chapter 11] 11.4 Entry environment
Page 951 and 952:
[Chapter 3] 3.5 Verifying Your New
Page 953 and 954:
[Chapter 3] 3.5 Verifying Your New
Page 955 and 956:
[Chapter 21] 21.2 Building Your Own
Page 957 and 958:
[Chapter 21] 21.2 Building Your Own
Page 959 and 960:
[Appendix D] D.2 Security Periodica
Page 961 and 962:
[Appendix D] D.2 Security Periodica
Page 963 and 964:
[Chapter 14] 14.2 Serial Interfaces
Page 965 and 966:
[Appendix C] C.3 Signals C.3 Signal
Page 967 and 968:
[Appendix C] C.3 Signals overflows)
Page 969 and 970:
[Chapter 27] 27.4 What All This Mea
Page 971 and 972:
[Appendix E] E.2 Usenet Groups E.2
Page 973 and 974:
[Chapter 15] 15.9 Summary 15.9 Summ
Page 975 and 976:
[Preface] Scope of This Book into y
Page 977 and 978:
[Preface] Scope of This Book Append
Page 979 and 980:
[Preface] Conventions Used in This
Page 981 and 982:
[Preface] Acknowledgments Acknowled
Page 983 and 984:
[Preface] Acknowledgments [ Library
Page 985 and 986:
[Preface] A Note to Computer Cracke
Page 987 and 988:
[Part II] User Responsibilities Par
Page 989 and 990:
[Part III] System Security Part III
Page 991 and 992:
[Chapter 20] 20.5 Some Last Comment
Page 993 and 994:
[Chapter 20] 20.5 Some Last Comment
Page 995 and 996:
[Chapter 22] Wrappers and Proxies C
Page 997 and 998:
[Chapter 21] 21.3 Example: Cisco Sy
Page 999 and 1000:
destination Specifies the address o
Page 1001 and 1002:
[Chapter 21] 21.3 Example: Cisco Sy
Page 1003 and 1004:
[Chapter 21] 21.6 Final Comments
Page 1005 and 1006:
[Chapter 22] 22.2 sendmail (smap/sm
Page 1007 and 1008:
Page 1009 and 1010:
Page 1011 and 1012:
[Chapter 22] 22.3 tcpwrapper ● Tr
Page 1013 and 1014:
[Chapter 22] 22.3 tcpwrapper 6. 7.
Page 1015 and 1016:
[Chapter 22] 22.3 tcpwrapper # # /e
Page 1017 and 1018:
} [Chapter 22] 22.3 tcpwrapper sed
Page 1019 and 1020:
[Chapter 22] 22.6 Writing Your Own
Page 1021 and 1022:
[Chapter 22] 22.6 Writing Your Own
Page 1023 and 1024:
[Part VI] Handling Security Inciden
Page 1025 and 1026:
[Appendix B] Important Files B. Imp
Page 1027 and 1028:
[Appendix B] Important Files /etc/d
Page 1029 and 1030:
[Appendix B] Important Files chgrp
Page 1031 and 1032:
[Appendix B] Important Files rc? Bo
show all

O'Reilly - Practical UNIX & Internet Sec... 7015KB

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?