Although ICMP traffic is required on every TCP/IP network, it can be used as an effective scanning tool to check for live systems. Lisa Bock reveals how ICMP packets can be manipulated and used as part of a planned attack to discover live hosts, network topology, Firewall Detection and OS Fingerprinting.
- [Voiceover] ICMP can be used as an effective scanning tool…to check for live systems.…ICMP traffic is required on every TCP/IP network,…and ICMP is an integral part of the IP protocol.…IP simply could not do its job without ICMP.…There are four types of query messages…that characterize the output generated by the Ping Command,…which are structured as a request reply.…
Echo request reply is used to test for reachability.…A time stamp request reply is used to compute…delay between two time stamps.…Information, it locates the address…of a local IP network,…and Subnet mask, this is where we…exhange subnet information.…ICMP Error Messages include,…Destination Unreachable, Source Quench,…Redirect, Time Exceeded, and Parameter Problem.…
ICMP Packets are used in ethical hacking…as they can be manipulated and used as part of a planned…attack to discover live hosts, network topology,…firewall detection, and Operating System fingerprinting.…I'm in Wireshark,…and I'll apply a filter to check to see if…this was an Nmap scan,…
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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