switch between them. For wireless networks, their settings are automatically tied to their public
identifier (SSID).
NetworkManager also handles connections by mobile broadband (Wireless Wide Area Network
WWAN) and by modems using point-to-point protocol over ethernet (PPPoE). Last but not least,
it provides integration with many types of virtual private networks (VPN) through dedicated plu-
gins: SSH, OpenVPN, Cisco’s VPNC, PPTP, Strongswan. Check out the
network-manager-* packages;
most of them are not installed by default.
5.1.2. On the Command Line with Ifupdown
Alternatively, when you prefer not to use (or don’t have access to) a graphical desktop, you can
configure the network with the already-installed
ifupdown package, which includes the
ifup
and
ifdown
tools. These tools read definitions from the
/etc/network/interfaces
configuration file
and are at the heart of the
/etc/init.d/networking
init script that configures the network at
boot time.