Debian Network Setup: Difference between revisions
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= Basic setup = | |||
Set up networking in /etc/network/interfaces | Set up networking in /etc/network/interfaces | ||
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... | ... | ||
</pre> | </pre> | ||
The '''allow hotplug''' line allows the interface to be controlled using the '''ifup''' and '''ifdown''' scripts, which Debian uses as standard. | |||
[https://wiki.debian.org/NetworkConfiguration Debian NetworkConfiguration wiki page] | [https://wiki.debian.org/NetworkConfiguration Debian NetworkConfiguration wiki page] | ||
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[https://www.debian.org/doc/manuals/debian-reference/ch05.en.html Debian reference manual Chapter 5. Network setup] | [https://www.debian.org/doc/manuals/debian-reference/ch05.en.html Debian reference manual Chapter 5. Network setup] | ||
For more advanced iproute2 information | = To resolvconf or not resolvconf = | ||
If using pdnsd - use resolvconf configuration | |||
= For more advanced iproute2 information = | |||
[[Multiple IP addresses on one NIC and Multiple internet connections on one nic]] | [[Multiple IP addresses on one NIC and Multiple internet connections on one nic]] | ||
{{:Iproute2}} | |||
Latest revision as of 07:17, 1 April 2019
Basic setup
Set up networking in /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug eth0
#auto eth0
iface eth0 inet static
address 192.168.0.112
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
# gateway 192.168.0.1
dns-nameservers 213.75.63.36 213.75.63.70 192.168.0.1
# dns-nameservers 192.168.0.1 192.168.0.2
# dns-search mynet.int internal.mynet.int ops.mynet.int
auto eth1
iface eth1 inet static
address 188.204.140.195
netmask 255.255.255.224
network 188.204.140.192
broadcast 188.204.140.223
gateway 188.204.140.193
dns-nameservers 213.75.63.36 213.75.63.70 192.168.0.1
NB for dns-search or dns-domain lines to work in the above stanzas you need to have the resolvconf package installed. Otherwise you will have to add the following to /etc/resolve.conf
search mynet.int search internal.mynet.int ...
The allow hotplug line allows the interface to be controlled using the ifup and ifdown scripts, which Debian uses as standard.
Debian NetworkConfiguration wiki page
Debian reference manual Chapter 5. Network setup
To resolvconf or not resolvconf
If using pdnsd - use resolvconf configuration
For more advanced iproute2 information
Multiple IP addresses on one NIC and Multiple internet connections on one nic
http://www.policyrouting.org/iproute2.doc.html#ss9.16
ip link list - shows the physical devices
ip addr list - shows the adressees the links have
ip addr show dev eth0
Basic ip route - http://linux-ip.net/html/tools-ip-route.html
ip route list - like netstat -rn
/etc/iproute2/rt_tables - contains the routing tables
ip route show table local / main - shows the specified table
ip -s route show cache
ip route flush cache
NB - ip route flush kills all the routing tables!!!
More on routing tables - http://linux-ip.net/html/routing-tables.html
| legacy net-tools commands | iproute2 replacement commands |
|---|---|
| arp | ip n (ip neighbor) |
| ifconfig | ip a (ip addr), ip link, ip -s (ip -stats) |
| iptunnel | ip tunnel |
| nameif | ip link |
| netstat | ss, ip route (for netstat -r), ip -s link (for netstat -i), ip maddr (for netstat -g) |
| route | ip r (ip route) |
eth0 82.94.91.77
eth0:0 188.204.140.196/27