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ifconfig (short for interface config) is a system administration utility in Unix-like operating systems for network interface configuration. The utility is a command-line interface tool and is also used in the system startup scripts of many operating systems. It has features for configuring, controlling, and querying TCP/IP network interface ...
Being network devices supported entirely in software, they differ from ordinary network devices which are backed by physical network adapters. The Universal TUN/TAP Driver originated in 2000 as a merger of the corresponding drivers in Solaris, Linux and BSD. [1] The driver continues to be maintained as part of the Linux [2] and FreeBSD [3] [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.
Wireless tools for Linux is a collection of user-space utilities written for Linux kernel-based operating systems to support and facilitate the configuration of device drivers of wireless network interface controllers and some related aspects of networking using the Linux Wireless Extension.
IP aliasing is associating more than one IP address to a network interface. With this, one node on a network can have multiple connections to a network, each serving a different purpose. According to the Linux Kernel documentation, [1] IP-aliases are an obsolete way to manage multiple IP-addresses/masks per interface.
Consistent Network Device Naming is a convention for naming Ethernet adapters in Linux. It was created around 2009 to replace the old ethX naming scheme that caused problems on multihomed machines because the network interface controllers (NICs) would be named based on the order in which they were found by the kernel as it booted.
Other network utilities include: netstat, displays network connections (both incoming and outgoing), routing tables, and a number of network interface and network protocol statistics. It is used for finding problems in the network and to determine the amount of traffic on the network as a performance measurement. [1]
On a Linux host for example, these interfaces would be called tun0 or ppp0. As there are only two endpoints on a tunnel, the tunnel is a point-to-point connection and PPP is a natural choice as a data link layer protocol between the virtual network interfaces.