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Problem Solutions

  




 

 

DHCP Server

1. What is a DHCP Server?
2. How do I install a DHCP Server?
1.

What is a DHCP Server?

A Dynamic Host Configuration Protocol (DHCP) server dynamically assigns IP addresses and other network setting for a given network to other networked PCs that ask. This simplifies network administration and makes connecting new PCs to a network much easier.

2.

How do I install a DHCP Server?

[Note]

For these examples we are using “eth0” and the following:

IP address range: 192.168.0.100 to 192.168.0.200

Subnet Mask: 255.255.255.0

DNS Servers: 202.188.0.133, 202.188.1.5

Domains: tm.net.my

Gateway Address: 192.168.0.1

  1. Read How do I add Universe and Multiverse?

  2. Install the dhcp3-server package with Synaptic(See How do I use Synaptic to install packages?)

    Networking > dhcp3-server

  3. sudo cp /etc/default/dhcp3-server /etc/default/dhcp3-server_backup 
    sudo gedit /etc/default/dhcp3-server

  4. Find this line

    ... INTERFACES=""
  5. Replace with the following line

    INTERFACES="eth0"
  6. Save the edited file (How do I install a DHCP Server?)

  7. sudo cp /etc/dhcp3/dhcpd.conf /etc/dhcp3/dhcpd.conf_backup 
    sudo gedit /etc/dhcp3/dhcpd.conf

  8. Find this section

    ...
        # option definitions common to all supported networks...
        option domain-name "example.org";
        option domain-name-servers ns1.example.org, ns2.example.org;
        
        default-lease-time 600;
        max-lease-time 7200;
    ...
  9. Replace with the following lines

    # option definitions common to all supported networks...
    #option domain-name "example.org";
    #option domain-name-servers ns1.example.org, ns2.example.org;
    
    #default-lease-time 600;
    #max-lease-time 7200;
  10. Find this section

    ...
    # A slightly different configuration for an internal subnet.
    #subnet 10.5.5.0 netmask 255.255.255.224 {
    #  range 10.5.5.26 10.5.5.30;
    #  option domain-name-servers ns1.internal.example.org;
    #  option domain-name "internal.example.org";
    #  option routers 10.5.5.1;
    #  option broadcast-address 10.5.5.31;
    #  default-lease-time 600;
    #  max-lease-time 7200;
    #}
    ...

  11. Replace with the following lines

    # A slightly different configuration for an internal subnet.
    subnet 192.168.0.0 netmask 255.255.255.0 {
    range 192.168.0.100 192.168.0.200;
    option domain-name-servers 202.188.0.133, 202.188.1.5;
    option domain-name "tm.net.my";
    option routers 192.168.0.1;
    option broadcast-address 192.168.0.255;
    default-lease-time 600;
    max-lease-time 7200;
    }
  12. Save the edited file (sample/dhcpd.conf_installdhcpserver)

  13. sudo /etc/init.d/dhcp3-server restart

 
 
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