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276 Part V: Hacking Applications Countermeasures against VoIP vulnerabilities Locking down VoIP can be tricky. You can get off to a good start, though, by segmenting your voice network into its own VLAN — or even a dedicated physical network if that fits into your budget. You should also make sure that all VoIP-related systems are hardened according to vendor recommendations and widely accepted best practices (such as NIST’s SP800-58 document at http://csrc.nist.gov/publications/nistpubs/800-58/SP800- 58-final.pdf) and that software and firmware are fully patched.
In This Chapter Chapter 14 Websites and Applications ▶ Testing websites and web applications ▶ Hacking with Google ▶ Protecting against SQL injection and cross-site scripting ▶ Preventing login weaknesses ▶ Countering web abuse ▶ Analyzing the source code W ebsites and web applications are common targets for attack because they’re everywhere and often open for anyone to poke and prod. Basic websites used for marketing, contact information, document downloads, and so on are especially easy for the bad guys to play around with. However, for criminal hackers, websites that provide a front end to complex applications and databases that store valuable information, such as credit card and Social Security numbers, are especially attractive. This is where the money is, both literally and figuratively. Why are websites and applications so vulnerable? The consensus is that they’re vulnerable because of poor software development and testing practices. Sound familiar? It should; this same problem affects operating systems and practically all aspects of computer systems. This is the side effect of relying on software compilers to perform error checking, waning user demand for higher-quality software, and emphasizing time-to-market instead of security and quality. This chapter presents website and application tests to run on your systems. Given all the custom software configuration possibilities, you can test for literally thousands of web vulnerabilities. In this chapter, I focus on the ones I see most often using both automated scanners and manual analysis. I also outline countermeasures to help minimize the chances that someone with ill intent can carry out these attacks against what are likely considered your most critical systems. I want to point out that this chapter merely skims the surface of all possible web security flaws and ways to test for them. Additional sources for building your web security testing skills are the tools and standards (such as the Top 10 Web Application Security Risks) provided by the Open Web Application Security Project (www.owasp.org).
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Hacking FOR DUMmIES‰ 4TH EDITION
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About the Author Kevin Beaver is an
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Mega thanks to Queensrÿche, Rush,
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Contents at a Glance Introduction .
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Table of Contents Introduction ....
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Table of Contents Performing Social
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Table of Contents Gathering Informa
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Table of Contents Part VI: Ethical
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Introduction W elcome to Hacking Fo
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Introduction Before you start hacki
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Introduction well-known vulnerabili
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Part I Building the Foundation for
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Chapter 1 Introduction to Ethical H
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Chapter 1: Introduction to Ethical
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Obeying the Ethical Hacking Command
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Formulating your plan Chapter 1: In
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Chapter 2 Cracking the Hacker Minds
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Malicious attackers often think and
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Chapter 2: Cracking the Hacker Mind
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In This Chapter Chapter 3 Developin
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Chapter 3: Developing Your Ethical
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Attack tree analysis is the process
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Timing Chapter 3: Developing Your E
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In This Chapter Chapter 4 Hacking M
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Chapter 4: Hacking Methodology no o
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Chapter 4: Hacking Methodology ✓
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Chapter 4: Hacking Methodology One
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Chapter 4: Hacking Methodology test
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Figure 4-1: Netcraft’s web server
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Chapter 4: Hacking Methodology docu
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Penetrating the System Chapter 4: H
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Part II Putting Ethical Hacking in
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In This Chapter ▶ Discovering soc
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Chapter 5: Social Engineering A cas
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Chapter 5: Social Engineering Socia
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Chapter 5: Social Engineering Regar
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Chapter 5: Social Engineering years
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✓ Threatening reprimands if reque
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Chapter 5: Social Engineering In so
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Chapter 5: Social Engineering reque
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In This Chapter Chapter 6 Physical
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Chapter 6: Physical Security A Q&A
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Chapter 6: Physical Security ✓ Do
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Chapter 6: Physical Security ✓ Do
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Chapter 6: Physical Security cellul
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Chapter 6: Physical Security ✓ Ke
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In This Chapter ▶ Identifying pas
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Chapter 7: Passwords A case study i
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Chapter 7: Passwords The National V
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Chapter 7: Passwords they should’
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Chapter 7: Passwords ✓ John the R
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Chapter 7: Passwords Dictionary att
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Chapter 7: Passwords this password
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Chapter 7: Passwords Cracking UNIX/
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Chapter 7: Passwords The financial
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Chapter 7: Passwords (www.identityf
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Chapter 7: Passwords Weak BIOS pass
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Storing passwords Chapter 7: Passwo
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Chapter 7: Passwords your systems.
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Linux and UNIX Chapter 7: Passwords
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Part III Hacking Network Hosts
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In This Chapter ▶ Selecting tools
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Chapter 8: Network Infrastructure U
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Chapter 8: Network Infrastructure
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Chapter 8: Network Infrastructure I
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Chapter 8: Network Infrastructure 3
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Figure 8-3: NetScan- Tools Pro OS F
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Figure 8-5: Management interface us
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Chapter 8: Network Infrastructure W
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Chapter 8: Network Infrastructure C
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Figure 8-8: Connecting a network an
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Figure 8-9: OmniPeek can help uncov
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Chapter 8: Network Infrastructure N
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Figure 8-12: Selecting your victim
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UNIX-based systems Chapter 8: Netwo
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Chapter 8: Network Infrastructure W
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Chapter 8: Network Infrastructure C
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Figure 8-14: Cisco Global Exploiter
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In This Chapter ▶ Understanding r
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A case study with Joshua Wright on
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Discovering Wireless LANs Figure 9-
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Figure 9-3: NetStumbler displays de
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You undoubtedly have various Blueto
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Chapter 9: Wireless LANs Airodump a
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Figure 9-8: Using Elcomsoft Wireles
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Figure 9-10: The Reaver startup win
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Figure 9-12: NetStumbler showing po
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Figure 9-15: CommView for Wifi show
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Chapter 9: Wireless LANs ✓ If pos
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Figure 9-17: Looking for the MAC ad
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Figure 9-19: Ensure that your SSID
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Chapter 9: Wireless LANs encryption
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In This Chapter Chapter 10 Mobile D
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Chapter 10: Mobile Devices You have
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Figure 10-3: Usernames extracted vi
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Chapter 10: Mobile Devices Power-on
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Figure 10-5: iOS Forensic Toolkit
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Chapter 10: Mobile Devices So, havi
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Part IV Hacking Operating Systems
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In This Chapter ▶ Port scanning W
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Choosing Tools Chapter 11: Windows
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Chapter 11: Windows Windows XP SP2
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Figure 11-2: Gathering detailed vul
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Figure 11-5: Using LanGuard to scan
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Figure 11-6: Mapping a null session
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✓ Local usernames ✓ Drive share
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Figure 11-9: Default local security
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Figure 11-10: Using LanGuard’s sh
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Figure 11-11: Exploitable vulnerabi
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Figure 11-13: Browsing the availabl
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Figure 11-17: Checking final parame
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Figure 11-19: Metasploit Pro’s gr
Page 243 and 244: Running Authenticated Scans Figure
Page 245 and 246: In This Chapter ▶ Examining Linux
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Page 249 and 250: Figure 12-3: LanGuard revealing use
Page 251 and 252: Figure 12-6: Using NetScan Tools Pr
Page 253 and 254: Figure 12-7: Using Nmap to check ap
Page 255 and 256: Figure 12-9: Viewing the process ID
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Page 259 and 260: Chapter 12: Linux ✓ Block spoofed
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Page 263 and 264: Figure 12-11: /etc/inittab showing
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Page 267 and 268: Part V Hacking Applications
Page 269 and 270: In This Chapter ▶ Attacking e-mai
Page 271 and 272: E-mail bombs Chapter 13: Communicat
Page 273 and 274: Figure 13-1: Limiting the number of
Page 275 and 276: Figure 13-4: smtpscan gathers versi
Page 277 and 278: Figure 13-7: Using EmailVerify to v
Page 279 and 280: Chapter 13: Communication and Messa
Page 281 and 282: Manual testing Chapter 13: Communic
Page 283 and 284: Figure 13-11: Critical information
Page 291 and 292: Figure 13-15: SiVuS discovered seve
Page 293: Figure 13-16: Using Cain & Abel to
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Page 299 and 300: Figure 14-1: Using HTTrack to crawl
Page 301 and 302: Countermeasures against directory t
Page 303 and 304: Figure 14-2: Using Firefox Web Deve
Page 305 and 306: Figure 14-3: Using SPI Proxy to fin
Page 307 and 308: Figure 14-4: WebInspect discovered
Page 309 and 310: Figure 14-7: Script code reflected
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Page 315 and 316: Figure 14-11: The Brutus tool for t
Page 321 and 322: Figure 14-13: Using CxDeveloper to
Page 323 and 324: Chapter 15 Databases and Storage Sy
Page 325 and 326: The Situation Chapter 15: Databases
Page 327 and 328: Figure 15-2: Using Cain & Abel to c
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Page 331 and 332: Figure 15-3: Using FileLocator Pro
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Page 335 and 336: Part VI Ethical Hacking Aftermath
Page 337 and 338: In This Chapter Chapter 16 Reportin
Page 339 and 340: Chapter 16: Reporting Your Results
Page 341 and 342: ✓ Summary of the vulnerabilities
Page 343 and 344: In This Chapter Chapter 17 Plugging
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Patch management Chapter 17: Pluggi
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I was once involved in an incident
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Chapter 18 Managing Security Proces
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Chapter 18: Managing Security Proce
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Part VII The Part of Tens
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Chapter 19 Ten Tips for Getting Upp
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Chapter 19: Ten Tips for Getting Up
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Chapter 19: Ten Tips for Getting Up
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Chapter 20 Ten Reasons Hacking Is t
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Chapter 20: Ten Reasons Hacking Is
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Chapter 21 Ten Deadly Mistakes S ev
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Thinking That You Know It All Chapt
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Appendix Tools and Resources T o st
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Exploits Appendix: Tools and Resour
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Keyloggers Appendix: Tools and Reso
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mailsnarf — www.monkey.org/~dugso
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Appendix: Tools and Resources PortS
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Appendix: Tools and Resources pwdum
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Source Code Analysis Storage Checkm
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Appendix: Tools and Resources NIST
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Windows Appendix: Tools and Resourc
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• A • aboveboard, 11 Abuse.net
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Cobb, Chey (author) Network Securit
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802.11 encryption protocols, 165, 1
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Health Insurance Portability and Ac
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malware, 151, 266-267, 355 Managing
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• P • packet filtering, 156 Pan
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Remember icon, 6 remote access serv
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SUSE, 247 SUSE Linux Security Alert
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Virtual Private Network (VPN) servi
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Apple & Mac iPad 2 For Dummies, 3rd
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