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ngrep, aka "network grep", isolate strings in packets, show packet data in human-friendly output. Nmap, a port-scanning and fingerprinting network utility; Pirni, a discontinued network security tool for jailbroken iOS devices. Scapy, a packet manipulation tool for computer networks, written in Python by Philippe Biondi.
Promiscuous mode is often used to diagnose network connectivity issues. There are programs that make use of this feature to show the user all the data being transferred over the network. Some protocols like FTP and Telnet transfer data and passwords in clear text, without encryption, and network scanners can see this data.
This allows using Twisted as the network layer in graphical user interface (GUI) programs, using all of its libraries without adding a thread-per-socket overhead, as using Python's native library would. A full-fledged web server can be integrated in-process with a GUI program using this model, for example.
A network socket is a software structure within a network node of a computer network that serves as an endpoint for sending and receiving data across the network. The structure and properties of a socket are defined by an application programming interface (API) for the networking architecture.
The Berkeley socket API is a general interface for networking and interprocess communication, and supports the use of various network protocols and address architectures. The following lists a sampling of protocol families (preceded by the standard symbolic identifier) defined in a modern Linux or BSD implementation:
In 1999, an operational programming interface was given to Portals so that it could be implemented for intelligent or programmable network interfaces outside of a lightweight kernel environment. [2] This standard was designed for systems where the work required to prepare, transmit, and deliver messages is longer than the round-trip to the ...
The Web Server Gateway Interface (WSGI, pronounced whiskey [1] [2] or WIZ-ghee [3]) is a simple calling convention for web servers to forward requests to web applications or frameworks written in the Python programming language. The current version of WSGI, version 1.0.1, is specified in Python Enhancement Proposal (PEP) 3333. [4]
NetworkManager is a daemon that sits on top of libudev and other Linux kernel interfaces (and a couple of other daemons) and provides a high-level interface for the configuration of the network interfaces.