Tech Notes :- CentOS 7 / RHEL 7 - No Internet Access From Virtual Box

Often after the default installation of RHEL 7 or CentOS 7 on VirtualBox internet access or for that matter network connectivity don't work . The solution is simple. Just make the below edits

vi /etc/sysconfig/network-scripts/ifcfg-enp0s3

Change the entry

ONBOOT=no 

to

ONBOOT=yes

reboot your machine or just restart network service.

Thats it !!! :)