DoS Guide | Fork Bomb | IP Spoofing

Denial of attacks

.0. FOREWORD

.A. INTRODUCTION

• .A.1. WHAT IS A DENIAL OF SERVICE ATTACK?
• .A.2. WHY WOULD SOMEONE CRASH A SYSTEM?
  • .A.2.1. INTRODUCTION
  • .A.2.2. SUB-CULTURAL STATUS
  • .A.2.3. TO GAIN ACCESS
  • .A.2.4. REVENGE
  • .A.2.5. POLITICAL REASONS
  • .A.2.6. ECONOMICAL REASONS
  • .A.2.7. NASTINESS
• .A.3. ARE SOME OPERATING SYSTEMS MORE SECURE?

.B. SOME BASIC TARGETS FOR AN ATTACK

• .B.1. SWAP SPACE
• .B.2. BANDWIDTH
• .B.3. KERNEL TABLES
• .B.4. RAM
• .B.5. DISKS
• .B.6. CACHES
• .B.7. INETD

.C. ATTACKING FROM THE OUTSIDE

• .C.1. TAKING ADVANTAGE OF FINGER
• .C.2. UDP AND SUNOS 4.1.3.
• .C.3. FREEZING UP X-WINDOWS
• .C.4. MALICIOUS USE OF UDP SERVICES
• .C.5. ATTACKING WITH LYNX CLIENTS
• .C.6. MALICIOUS USE OF telnet
• .C.7. MALICIOUS USE OF telnet UNDER SOLARIS 2.4
• .C.8. HOW TO DISABLE ACCOUNTS
• .C.9. LINUX AND TCP TIME, DAYTIME
• .C.10. HOW TO DISABLE SERVICES
• .C.11. PARAGON OS BETA R1.4
• .C.12. NOVELLS NETWARE FTP
• .C.13. ICMP REDIRECT ATTACKS
• .C.14. BROADCAST STORMS
• .C.15. EMAIL BOMBING AND SPAMMING
• .C.16. TIME AND KERBEROS
• .C.17. THE DOT DOT BUG
• .C.18. SUNOS KERNEL PANIC
• .C.19. HOSTILE APPLETS
• .C.20. VIRUS
• .C.21. ANONYMOUS FTP ABUSE
• .C.22. SYN FLOODING
• .C.23. PING FLOODING
• .C.24. CRASHING SYSTEMS WITH PING FROM WINDOWS 95 MACHINES
• .C.25. MALICIOUS USE OF SUBNET MASK REPLY MESSAGE
• .C.26. FLEXlm
• .C.27. BOOTING WITH TRIVIAL FTP

.D. ATTACKING FROM THE INSIDE

• .D.1. KERNEL PANIC UNDER SOLARIS 2.3
• .D.2. CRASHING THE X-SERVER
• .D.3. FILLING UP THE HARD DISK
• .D.4. MALICIOUS USE OF eval
• .D.5. MALICIOUS USE OF fork()
• .D.6. CREATING FILES THAT IS HARD TO REMOVE
• .D.7. DIRECTORY NAME LOOKUPCACHE
• .D.8. CSH ATTACK
• .D.9. CREATING FILES IN /tmp
• .D.10. USING RESOLV_HOST_CONF
• .D.11. SUN 4.X AND BACKGROUND JOBS
• .D.12. CRASHING DG/UX WITH ULIMIT
• .D.13. NETTUNE AND HP-UX
• .D.14. SOLARIS 2.X AND NFS
• .D.15. SYSTEM STABILITY COMPROMISE VIA MOUNT_UNION
• .D.16. trap_mon CAUSES KERNEL PANIC UNDER SUNOS 4.1.X

.E. DUMPING CORE

• .E.1. SHORT COMMENT
• .E.2. MALICIOUS USE OF NETSCAPE
• .E.3. CORE DUMPED UNDER WUFTPD
• .E.4. ld UNDER SOLARIS/X86

.F. HOW DO I PROTECT A SYSTEM AGAINST DENIAL OF SERVICE ATTACKS?

• .F.1. BASIC SECURITY PROTECTION
  • .F.1.1. INTRODUCTION
  • .F.1.2. SECURITY PATCHES
  • .F.1.3. PORT SCANNING
  • .F.1.4. CHECK THE OUTSIDE ATTACKS DESCRIBED IN THIS PAPER
  • .F.1.5. CHECK THE INSIDE ATTACKS DESCRIBED IN THIS PAPER
  • .F.1.6. EXTRA SECURITY SYSTEMS
  • .F.1.7. MONITORING SECURITY
  • .F.1.8. KEEPING UP TO DATE
  • .F.1.9. READ SOMETHING BETTER
• .F.2. MONITORING PERFORMANCE
  • .F.2.1. INTRODUCTION
  • .F.2.2. COMMANDS AND SERVICES
  • .F.2.3. PROGRAMS
  • .F.2.4. ACCOUNTING

.G. SUGGESTED READING

• .G.1. INFORMATION FOR DEEPER KNOWLEDGE
• .G.2. KEEPING UP TO DATE INFORMATION
• .G.3. BASIC INFORMATION

.H. COPYRIGHT

.I. DISCLAIMER

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