Calin's Humble Scanner - User Guide

## Scan method ICMP - Ping sweep

- Finds the IPv4 hosts that responds to ICMP Echo Requests.
- After receiving an ICMP Echo Request packet, any IPv4 host should respond with an ICMP Echo Reply packet. This standard behaviour may be blocked by a firewall or by some operating system specific settings, as a security measure.
- The ICMP Echo Request packets carry a payload. The payloads are constructed to mimic the payloads sended by the `ping` application found in various operating systems. If random is specified the payload consists of 56 bytes with a value of 0.
- If a payload is supplied as parameter, that payload will be used. Maximum payload length is hardcoded to 1024 bytes. If the supplied one is bigger it will be truncated.

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