Assignment 3: Webmin [OPTIONAL]

Installation and configuration of remote configuration tools: WEBMIN

Under report. Delivery + ok --> + 0,15 in EC score.

Once that’s done, we will begin with the configuration service Webmin that allows us to configure every feature of both operating systems and services running on our servers. Webmin uses a centralized web interface, restricted access and form-based, to enable administrators to configure everything.

1. Installation of the Webmin service (1): Keep the default configuration during the installation process

   • Install it on all our virtual servers:

     • server-01

     • server-03

     • server-04

     • server-05

   • Add (link) the webmin apps on server-01, server-03 and server-05 to monitor (server-04) as webmin clients (2)

2. Initial configuration:

   • Restrict IP access to webmin to only computers in the 10.128.0.0 subnet.

   • Modify the default language to the Spanish language (Spanish ES.UTF-8).

3. Advanced configuration:

   • Administrator profiles: Enable a new administrator profile (operator). This will have a sub-set of root (administrator) rights. The administrator will have all available rights. However, the operator will only have the rights required to manage the service. For server-04, those are WEB, MySQL and SSH services. Design these profiles (roles) yourself.

   • Enable the necessary webmin modules to manage configuration of the following services and tools:

     • server-01

       1. LDAP Server/Client/Users and Groups

       2. BIND DNS

       3. DHCP

     • server-03

       1. NFS

       2. Samba File Sharing

       3. Linux RAID

       4. Logical Volume Manager

     • server-04/monitor

       1. Web server (Apache)

       2. Webalizer logfile analysis

     • server-05

       1. Postfix Mail Server

       2. Dovecot IMAP/POP3 Server

   • Perform the following setup tasks using only Webmin:

     • Set the system time two hours before.

     • Set the MTU of the default network interface to 5000.

     • Create a new LDAP group and user:

       1. Username: operator

       2. UID: 2010

       3. GID: 2000 (group1)

       4. Default shell: /bin/bash

       5. Default home: /home/operator

       6. User must change password at first login.

       7. Account expires on January 1st, 2030

       8. Force user to change password every 3 months

       9. Add GECOS data: Phone number, e-mail address …

More details in reference [2]

(1) Use the official debian software repositories

(2) [Clue]: Webmin Server Index