Ubuntu /etc/network/interfaces DHCP setup
To setup eth0 to dhcp in /etc/network/interfaces
auto eth0
iface eth0 inet dhcp
/etc/network/interfaces Ubuntu Static Network setup
Following example setup eth0 with 192.168.1.1 IP address and gateway (router) to 192.168.1.2
iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.0
gateway 192.168.1.2
With IPtables
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.downrules
Another Example -
auto lo
iface lo inet loopback
auto eth1
iface eth1 inet static
address [...]
To configure your Ethernet device with a static IP address and custom configuration, some more information will be required.
Suppose you want to assign the IP address 192.168.0.2 to the device eth1, with the typical netmask of 255.255.255.0.
Your default gateway’s IP address is 192.168.0.1. You would enter something like this into /etc/network/interfaces:
iface eth1 inet [...]
tshark – Dump and analyze network traffic
# tshark -n -i ppp0 port 80
Running as user “root” and group “root”. This could be dangerous.
Capturing on ppp0
-n Disable network object name resolution (such as hostname, TCP and UDP port names), the -N flag might override this one.
-i [capture interface]
TShark is a [...]