Configuring Network on FreeBSD

FreeBSD


Operating System	FreeBSD 9
Website	FreeBSD Website

Introduction

The network is an essential part of system configuration, so I'll cover some aspects of it here.

The command is always the same:

1	`ifconfig`

We can declare the interfaces to manage at startup by simply listing the interfaces separated by spaces:

# Network
network_interfaces="lo0 vr0 vr1 vr2"
ifconfig_lo0="inet 127.0.0.1"

Here I've declared 4 interfaces and configured lo0.

If you want to set an interface to use DHCP, it's very simple:

# Network
ifconfig_vr0="DHCP"

Here my vr0 interface is configured with DHCP.

If you want to set a static IP address to an interface, it's very simple:

# Network
ifconfig_vr0="inet 192.168.10.254 netmask 255.255.255.0"

Here my vr0 interface is configured with a static IP.

To configure the default gateway:

# Network
defaultrouter="192.168.10.138"

To display routes:

1	`netstat -rn`

To add a route, simply define one or more route names and define them line by line:

static_routes="route1 route2"
route_route1="-net 222.2.90.0/24 222.2.30.1"
route_route2="-net 222.2.100.0/24 222.2.30.1"

To restart network services:

1	`/etc/rc.d/netif restart`

And for routing services:

1	`/etc/rc.d/routing restart`