Lisa Bock reviews IP Spoofing Detection Techniques that include Direct TTL Probes and IP ID number and TCP Flow Control Method.
- [Instructor] With IP spoofing, a malicious party…impersonates another entity.…The objective might be to steal data,…spread malware, or circumvent access controls.…There are a couple ways that we can detect IP spoofing.…One is a direct time-to-live probe.…Now, in this case, we send a packet to the claimed host,…and we're waiting for a reply.…Now, once we get that, we check the time-to-live value…in the reply in the IP header,…and if it's not the same as the packet that we're checking,…this is a spoofed packet.…
This technique is only successful…if the attacker is in a different subnetwork,…and that's because, of course,…if it's passing through the router,…the time-to-live value will change.…Another one is by checking the IP identification number.…Now, sending a probe to the claimed host…will result in a reply.…Now, if the Internet protocol…header identification number in the reply…is not quite right, it's most likely a spoofed packet.…
Now, let's check in Wireshark.…Now, I've opened up a packet capture,…and I just ran a quick capture,…
This course investigates the scanning tools and techniques used to obtain information from a target system, including specially crafted packets, TCP flags, UDP scans, and ping sweeps. Lisa Bock discusses how hackers can identify live systems via protocols, blueprint a network, and perform a vulnerability scan to find weaknesses. She also introduces some of the tools and techniques that hackers use to counter detection via evasion, concealment, and spoofing. In addition, learn how to reduce the threat of tunneling, a method hackers use to circumvent network security.
Note: Our Ethical Hacking series maps to the 18 parts of the EC-Council Certified Ethical Hacker (CEH) exam (312_50). This course maps to the 03 Scanning Networks domain.
- Scanning overview
- Port scanning countermeasures
- Scanning and querying DNS
- Scanning with ICMP
- Mapping (or blueprinting) a network
- Scanning for vulnerabilities
- Using tools such as hping and NetScan
- Evading detection
- Concealing your network traffic
- Preventing tunneling
Skill Level Intermediate
1. Scanning Overview and Methodology
2. Identifying Live Systems Using Protocols
3. Blueprint the Network
4. Vulnerability Scanning
Commercial and free scanners3m 17s
5. Scanning Tools
6. Evading Detection
7. Concealing and Spoofing
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