What is Scapy used for?

Scapy is a library made in Python, with its own command line interpreter (CLI), which allows to create, modify, send and capture network packets. It can be used interactively through the command line interface or as a library by importing it into Python programs. It can also run on Linux, Mac OS X and Windows systems.

How do you sniff with Scapy?

Sniffing packets using scapy: To sniff the packets use the sniff() function. The sniff() function returns information about all the packets that has been sniffed. To see the summary of packet responses, use summary(). The sniff() function listens for an infinite period of time until the user interrupts.

What is Scapy Haslayer?

Scapy uses Python dictionaries as the data structure for packets. Each packet is a collection of nested dictionaries with each layer being a child dictionary of the previous layer, built from the lowest layer up. Scapy has packet methods for viewing the layers and fields that I will introduce next.

What is sr1 in Scapy?

The function sr1() is a variant that only returns one packet that answered the packet (or the packet set) sent. The packets must be layer 3 packets (IP, ARP, etc.).

Can you use psdump on a Scapy terminal?

Won’t be able to use psdump() or pdfdump(). The basic features of sending and receiving packets should still work, though. Before you actually start using Scapy, you may want to configure Scapy to properly render colors on your terminal. To do so, set conf.color_theme to one of of the following themes:

Why do we want to use Scapy in Python?

After the last tutorial, you must have gained enough understanding about what you can do using dpkt module. In this lesson we will have a look at another python module which allows us to send, sniff, dissect and forge network packets. This capability allows construction of tools that can probe, scan or attack networks. Why do we want to use scapy?

Where can I find the documentation for Scapy?

The Scapy project’s documentation is written using reStructuredText (files *.rst) and can be built using the Sphinx python library. The official online version is available on readthedocs.

What happens if you do not have all optional packages installed in Scapy?

If you do not have all optional packages installed, Scapy will inform you that some features will not be available: INFO: Can’t import python matplotlib wrapper. Won’t be able to plot. INFO: Can’t import PyX. Won’t be able to use psdump() or pdfdump(). The basic features of sending and receiving packets should still work, though.