configure DHCP server for ubuntu

DHCP_SHH_ubuntu.sh

# Install DHCP
sudo apt-get install isc-dhcp-server

###############################
# 2 files to configure:
# /etc/default/isc-dhcp-server 
# /etc/dhcp/dhcpd.conf
# /etc/network/interfaces

### sudo vi /etc/default/isc-dhcp-server
INTERFACES="eth1"

### sudo vi /etc/dhcp/dhcpd.conf
subnet 192.168.2.0 netmask 255.255.255.0 {
  interface eth1;
  range 192.168.2.10 192.168.2.254;
#  option routers 192.168.2.1;
  option subnet-mask 255.255.255.0;
  option broadcast-address 192.168.2.255;
}

### sudo vi /etc/network/interfaces
auto eth1
iface eth1 inet static
address 192.168.2.2
netmask 255.255.255.0
# gateway 192.168.2.1 do NOT set gateway or you will lose your internet
broadcast 192.168.2.255
dns-nameservers 8.8.8.8 8.8.4.4

#####################
# Start the services
sudo service network-manager restart
sudo service networking restart
sudo service resolvconf restart
sudo service isc-dhcp-server restart
sudo service isc-dhcp-server start
sudo service isc-dhcp-server stop 
# Check status
sudo netstat -uap 

######################
# OpenSSH
sudo apt-get install openssh-server 
sudo restart ssh

# if slow log-in to ssh
# sudo nano /etc/ssh/sshd_config
GSSAPIAuthentication no
UseDNS no