Monthly Archives: May 2013

How to Configure Vyatta as DHCP Server for LAN

vyatta

Scenario:

Vyatta dhcp server with 2 network cards (eth0 & eth1), eth0 is connected to Internet, while eth1 is connected to the LAN and serve as dhcp server for 10.10.10.0/24 subnet.

Configuring the LAN–facing Ethernet interface:

Connect to the Vyatta Firewall, then enter the configuration mode and list the configuration of eth1 interface(which will serve the ip address(es) to the LAN hosts):

configure
show interfaces ethernet eth1

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How to Configure NTP Server and Timezone on Vyatta

Out of the box the Vyatta Firewall will sync to Vyatta’s NTP server pool. It really important to set your NTP server address to the standard time sources for your organization and delete the default NTP server.

Reason:This will make it easier to correlate the Vyatta logs with logs from other systems that are receiving time from the same NTP source. A difference of a  few seconds sometime can make it very difficult to compare the logs of separate systems.

By default, Vyatta set its internal clock in Universal time (UTC) a.k.a GMT:

show date

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Before proceeding, verify that the Vyatta Firewall synchronize with default NTP server:

show ntp

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Vyatta – Basic Configuration after installation

Vyatta is a routing/firewall/VPN platform based on a Debian GNU/Linux that runs on x86 or amd64 hardware and many virtual machine hypervisors. It is widely used in cloud infrastructure. It is appreciated by its robustness, reliability and the services it provides. Vyatta is more like IOS, JunOS and other enterprise platforms.

Scenario:

We’ll use the following scenario, to understand the basic configuration of vyatta.

vyatta

Booting the Vyatta:

After starting the Vyatta machine. It should go through the usual Linux boot process. Log in with the username vyatta and the password vyatta (or any other password that you have configured during the installation).

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