Get all network interface via ifconfig -a
root@kali:~# ifconfig -a
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::a00:27ff:feb9:4199 prefixlen 64 scopeid 0x20<link>
ether 08:00:27:b9:41:99 txqueuelen 1000 (Ethernet)
RX packets 519 bytes 48678 (47.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 435 bytes 67138 (65.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.3.15 netmask 255.255.255.0 broadcast 10.0.3.255
ether 08:00:27:50:61:71 txqueuelen 1000 (Ethernet)
RX packets 87 bytes 18078 (17.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 203 bytes 21117 (20.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 160 bytes 9648 (9.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 160 bytes 9648 (9.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
For this case, we have eth0, eth1 to connect.
add the following lines to your /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
### Add the following
allow-hotplug eth0
iface eth0 inet dhcp
allow-hotplug eth1
iface eth1 inet dhcp
Save it.
And activate the network via ifup
ifup eth0
ifup eth1
Now you should be able to connect via 2 networks at the sametime, confirm it via ifconfig
root@kali:~# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.56.101 netmask 255.255.255.0 broadcast 192.168.56.255
inet6 fe80::a00:27ff:feb9:4199 prefixlen 64 scopeid 0x20<link>
ether 08:00:27:b9:41:99 txqueuelen 1000 (Ethernet)
RX packets 655 bytes 58846 (57.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 543 bytes 93098 (90.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.3.15 netmask 255.255.255.0 broadcast 10.0.3.255
ether 08:00:27:50:61:71 txqueuelen 1000 (Ethernet)
RX packets 87 bytes 18078 (17.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 203 bytes 21117 (20.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 160 bytes 9648 (9.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 160 bytes 9648 (9.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0