Centos 7 minimal in VirtualBox

Change network config
vi /etc/sysconfig/network-scripts/ifcfg-eth0 (or ifcfg-eX named)

ONBOOT="NO"
->
ONBOOT="YES"

Save and restart network with the following command
service network restart

Change network mode from NAT mode to Bridged mode.

if need ifconfig, yum install net-tools


if need iptables,
yum install iptables-services
systemctl mask firewalld
systemctl stop firewalld
systemctl enable iptables 
systemctl enable ip6tables 
systemctl start iptables 
systemctl start ip6tables

if want to enable ping,
iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT
iptables -A OUTPUT -p icmp --icmp-type echo-reply -j ACCEPT
service iptables save
systemctl restart iptables

if want to enable ssh, check ssh server is installed and add to iptables
iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --set --name ssh --rsource

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