4. Configuring Postfix

4.1. main.cf and master.cf

Your postfix main.cf file should look like:

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This tutorial will explain how to run a mail server with virtual domains and users using a MySQL backend to store email informations.
Postfix will be our SMTP server, Dovecot will be handling IMAP (optionally one could configure POP3 also) so that users can retrieve their email.

Another tutorial will cover SPAM fighting using DSPAM based on this implementation (yet to be done).

This tutorial was done on Debian Etch using postfix 2.3.8-2etch4 and 1.0.rc15-2etch4.

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3. Creating users

Here we will be using sha1 password. To create a password, you can use the following command:

# echo -n ‘password’ | sha1sum
5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8 -

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this tutorial will explain how to use a MySQL backend in order to authentication users against your Apache website.

To achieve this we will use Apache2 and its auth_mysql module.

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While doing a server migration, it happens that some traffic still go to the old machine because the DNS servers are not yet synced or simply because some people are using the IP address instead of the domain name….

By using iptables and its masquerade feature, it is possible to forward all traffic to the old server to the new IP.

This tutorial will show which command lines are required to make this possible.

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3. Setting BGP

As told earlier on, vyatta-bgp1 will advertise AS 1 with network 1.1.1.0/24 to its neighbor vyatta-bgp2 handling AS 2
and
vyatta-bgp2 will advertise AS 2 with network 2.2.2.0/24 to its neighbor vyatta-bgp1 handling AS 1

They will use a common password for this communication, which is BGPtutorial.

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2. Setting the network interfaces

During this part, we are going to set up the 2 Border Gateway routers’network interfaces. In vyatta world, you need to enter the interactive configuration shell by typing:

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Vyatta is a Linux based distro that ease the set up of VPN, Routers, antivirus…. It has a really small footprint on your system as it only requires something like 800M to be installed and is based on Debian. On the top of that, it offers configuration wrappers to facilitate service settings.

This tutorial will explain how to set up 2 Border Gateway Protocol (BGP) boxes to route the traffic from one Autonomous System (AS) to the other using Vyatta.
Vyatta Community Edition 4.1.4 was used during this set up.

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Bazaar (bzr) is a distributed version control system (VCS) sponsored by Canonical and thus bzr is widely used by the Ubuntu community.

Like any vcs, bzr will let you track the different version of your code locally and let you push the changes to a remote server.

One cool feature of bzr is that you can maintain a remote copy of your code history without having a bzr server running, nor having a copy of bzr on the remote server running and simply by using ssh to transport the data.

This tutorial will not explain how bzr works, but will show the couple few step to create your local repository, add a few files, commit the changes, push them to a remote server and copy the branch newly created to another machine.

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4. Installing the system

we are now going to install the distro over our layout. Start the installer and make sure you choose manual partitioning. Then set up your filesystem like the one on the screenshot.

luks encryption over-lvm ubuntu installer

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