ServerBuddies Support Blog

Preparing Ubuntu System before Webmin Install.

You can install webmin for your server web interface to configure apache2,mysql,FTp servers and many more.

Preparing your system

First you need to install the following packages

Now download the latest webmin using the following command or from

http://www.webmin.com/download.html

Changing the proxy ports and addresses in Webmin

By default, Squid listens for proxy requests on TCP port 3128 on all of your system’s IP addresses. Because this is not the usual port that proxies are run on (8000 and 8080 seem to be the most common), you may want to change it. You might also want to edit the listening address so that only clients on your internal network can connect, if your system has more than one network interface.

To specify the ports that Squid uses, follow these steps :

1. On the module’s main page, click on the Ports and Networking icon.

2. In the Proxy addresses and ports table, select the Listed below option. In the table below, each row defines a listening port and optionally an address to bind to. Any existing ports and addresses will be listed, followed by a single blank row for adding a new one. In the first empty field in the Port column, enter a port number like 8000 or 8080. In the Hostname/IP address column, either select All to accept connections on any of your system’s interfaces, or the second option to enter an IP address in the adjacent text box. Using this table, Squid can be configured to listen on as many ports as you like. However, because only one blank row appears at a time you will need to save and re-open the form to add more than one new port.

3. ICP is a protocol used by Squid to communicate with other proxies in a cluster. To listen on a port other than the default of 3130 for ICP, fill in the ICP port field. This is not generally necessary though, as only other proxies ever use this protocol.

4. Squid will normally accept ICP connections on any IP address. To change this, select the second radio button in the Incoming UDP address field and enter one of your system’s interface IPs into its text field. This can be useful if all of the other proxies that your server might want to communicate with are on a single internal LAN.

5. Click the Save button at the bottom of the page to update the configuration file with your new settings, then click the Apply Changes link back on the main page to activate them.

Article taken from http://doxfer.com/

Module access control for users in Webmin

Once a user has been given access to the module, you can limit him to just mounting or un-mounted selected filesystems by following these steps :

In the Webmin Users module, click on Disk and Network Filesystems next to the user’s name to bring up the access control form.

Change the Can edit module configuration? field to No to stop him from configuring the module to use a different fstab file or mount commands.

In the Filesystems that can be edited field, select Under listed directories and enter a list of mount points into the adjacent text box.

For example, you might enter /mnt/floppy /mnt/cdrom. It is also possible to enter a directory like /mnt to allow access to all filesystems under it.

Change the Can add new filesystems? field to No.

Change the Only allow mounting and unmounting? field to Yes, so that the user cannot actually edit filesystem details.

Hit the Save button to activate the new restrictions.

For more please visit - http://doxfer.com/Webmin/DiskAndNetworkFilesystems

Enabling quotas for a filesystem in Webmin

If the main page of the module shows User Quotas Active (or *Group Quotas Active*) under the Status column for the filesystem, then quotas have already been enabled. If not, to configure and turn on quotas for an ext2 or ext3 filesystem, follow these steps :

If the filesystem already appears in the list on the main page of the module, quotas have already been configured and you can skip to step 5.

Go to the Disk and Network Filesystems module and click on the filesystem you want to enable quotas on.

Change the Use Quotas? option to either User only, Group only or User and Group depending on which kinds of quota you want to enforce.

Click the Save button.

If an error saying that the filesystem is already in use appears, just click the

Apply to Permanent List button. Quotas can still be enabled without needing to reboot, and will be automatically re-enabled when the system is next rebooted.

Back in the Disk Quotas module, your filesystem should now be visible. Click on the Enable Quotas link to activate quotas now.

Assuming all goes well, after a short delay the browser will return to the list of quotas and the Status column will have changed to User Quotas Active.

more at .. http://doxfer.com/Webmin/

Change Language and Theme in Webmin

Changing Your Language

Open the Change Language and Theme module under the Webmin category.

In the Webmin UI language field, select Personal choice and select a language from the menu.

Click Make Changes.

Once this is done, a change to the global langage in the Webmin Configuration module will not effect your selection.

Changing Your Theme
To change the theme for your current login only, do the following :

Open the Change Language and Theme module under the Webmin category.

In the Webmin UI theme field, select Personal choice and select a theme from the menu.

Click Make Changes.

For more details visit docs at http://doxfer.com/Webmin/Modules