Webmin Administrator's Cookbook -- Table of Contents -- Webmin Administrator's Cookbook -- Credits -- About the Author -- About the Reviewers -- www.PacktPub.com -- Support files, eBooks, discount offers and more -- Why Subscribe? -- Free Access for Packt account holders -- Preface -- What this book covers -- What you need for this book -- Who this book is for -- Conventions -- Reader feedback -- Customer support -- Errata -- Piracy -- Questions -- 1. Setting Up Your System -- Introduction -- Installing Webmin on a Debian-based system -- How to do it... -- How it works... -- There's more... -- See also -- Installing Webmin on an RPM-based system -- How to do it... -- How it works... -- There's more... -- See also -- Installing Webmin on another system -- Getting ready -- How to do it... -- How it works... -- See also -- Connecting to Webmin -- Getting ready -- How to do it... -- How it works... -- There's more... -- Changing Webmin's listening port -- Specifying the IP address on which Webmin listens -- Installing additional Webmin modules -- Getting ready -- How to do it... -- How it works... -- There's more... -- Installing a module from a repository -- Uninstalling a module -- See also -- Monitoring what Webmin is doing -- Getting ready -- How to do it... -- How it works... -- There's more... -- Rolling back file changes -- See also -- Controlling which system services are started at boot -- How to do it... -- How it works... -- There's more... -- Creating a custom init script -- Inspecting active processes -- Inspecting the installed software packages -- How to do it... -- How it works... -- There's more... -- Viewing the files installed with a package -- Identifying which package installed a file -- Installing software packages -- Getting ready -- How to do it... -- How it works... -- There's more...

Updating the installed packages to the latest versions -- How to do it... -- How it works... -- There's more... -- Enabling Webmin to send an e-mail -- Getting ready -- How to do it... -- How it works... -- See also -- Getting an e-mail when new versions of packages become available -- Getting ready -- How to do it... -- How it works... -- There's more... -- Reading the documentation of the installed software -- How to do it... -- How it works... -- There's more... -- 2. User Management -- Introduction -- Creating a Webmin user -- Getting ready -- How to do it... -- How it works... -- There's more... -- Clone a Webmin user -- Switch to user -- See also -- Creating a Webmin group with access to specific modules and options -- How to do it... -- How it works... -- There's more... -- Permissions for all modules -- See also -- Allowing users to log in to Webmin with the system credentials -- Getting ready -- How to do it... -- How it works... -- There's more... -- Creating Webmin users based on system accounts -- Getting ready -- How to do it... -- How it works... -- Controlling who is currently using Webmin -- How to do it... -- How it works... -- Creating a system user account -- Getting ready -- How to do it... -- How it works... -- Modifying a user's UID and other information -- How to do it... -- How it works... -- Temporarily disabling a user account -- How to do it... -- How it works... -- Creating and editing a system group -- How to do it... -- How it works... -- Changing a user's password -- Getting ready -- How to do it... -- How it works... -- Exporting users and importing them into another system -- How to do it... -- How it works... -- Webmin's batch file format for operations on users -- Webmin's batch file format for operations on groups -- There's more... -- Export and import system groups -- Batch update user accounts.

Batch delete user accounts -- See also -- Installing Usermin -- How to do it... -- How it works... -- See also -- 3. Securing Your System -- Introduction -- Server security checklist -- Keeping your system up-to-date -- Turning off unnecessary services -- Building a firewall around your system -- Performing backups -- Monitoring your system -- Verifying the strength of your passwords -- Verifying the system security and setting up intrusion detection and prevention software -- Setting up a Linux firewall -- Some iptables terminology -- Getting ready -- How to do it... -- How it works... -- There's more... -- See also -- Allowing access to a service through the firewall -- Getting ready -- How to do it... -- How it works... -- There's more... -- Creating a service accessible only from the internal network -- See also -- Verifying your firewall by port scanning -- Getting ready -- How to do it... -- How it works... -- There's more... -- Host discovery with Nmap -- Scanning all ports -- Scanning without administrative privileges -- See also -- Turning off unnecessary services -- How to do it... -- How it works... -- Verifying the strength of passwords -- Getting ready -- How to do it... -- How it works... -- Disabling root login over SSH -- How to do it... -- How it works... -- Restricting Webmin access to a specific IP -- Getting ready -- How to do it... -- How it works... -- There's more... -- Allowing access from multiple IP addresses -- Allowing access from a dynamically allocated IP -- Allowing access from an IP range -- Allowing access from the local network -- Connecting to Webmin securely over an SSH tunnel -- Getting ready -- How to do it... -- How it works... -- There's more... -- Sharing the SSH tunnel with other machines -- Creating a tunnel on Windows using Putty -- See also -- Closing inactive Webmin sessions automatically.

How to do it... -- How it works... -- 4. Controlling Your System -- Introduction -- Executing a command on the server -- How to do it... -- How it works... -- There's more... -- Executing a series of commands -- Executing commands conditionally -- Executing a command from history -- Executing a command as another user -- Getting ready -- How to do it... -- How it works... -- There's more... -- Passing input to a command -- Running tasks in background -- Setting a command to be executed in the future -- Getting ready -- How to do it... -- How it works... -- There's more... -- See also -- Scheduling a command to run regularly with cron -- Getting ready -- How to do it... -- How it works... -- There's more... -- Disabling a cron task temporarily -- Cloning a cron task -- Specifying which users can schedule tasks with cron -- Creating a panel for the commands that you execute often -- Getting ready -- How to do it... -- How it works... -- There's more... -- Cloning a command -- Specifying command arguments -- Making the command available in Usermin -- See also -- Creating a panel with the database commands that you execute often -- Getting ready -- How to do it... -- How it works... -- See also -- Running a terminal emulator in the browser -- How to do it... -- How it works... -- There's more... -- 5. Monitoring Your System -- Introduction -- Viewing and searching through system logfiles -- Getting ready -- How to do it... -- How it works… -- There's more... -- Configuring system logs to refresh automatically -- See also -- Saving Syslog messages to a file -- Getting ready -- How to do it... -- How it works... -- There's more... -- Adding other logfiles to Webmin -- Getting ready -- How to do it… -- How it works... -- There's more... -- Configuring logfile rotation -- Getting ready -- How to do it... -- How it works... -- There's more...

Rotating logfiles on demand -- Editing default options -- Sending logfiles by email when rotating -- Listing recent logins -- How to do it... -- How it works... -- There's more... -- Receiving an e-mail when a service stops running -- Getting ready -- How to do it... -- How it works... -- There's more... -- Inspecting monitor history -- Using predefined monitors -- Monitoring system load -- Monitoring disk space -- See also -- Automatically restarting a service that goes down -- Getting ready -- How to do it... -- How it works... -- Monitoring a remote server -- Getting ready -- How to do it... -- How it works... -- There's more... -- Checking that a remote server is up -- Checking that a remote server is running a network service -- 6. Managing Files on Your System -- Introduction -- Downloading files from the server -- How to do it... -- How it works... -- See also -- Uploading files to the server -- Getting ready -- How to do it... -- How it works... -- There's more... -- Downloading files from the Web directly onto your server -- Downloading files from the Web in the background -- Managing files and directories on the server -- Getting ready -- How to do it... -- Copying or moving a file or directory -- Renaming a file or directory -- Deleting a file or directory -- Editing a file on the server -- Creating a directory on the server -- Creating a new file on the server -- Creating a symbolic link on the server -- Downloading a directory and its content -- Extracting files from a compressed archive -- How it works... -- See also -- Changing file ownership and permissions -- Getting ready -- How to do it... -- How it works... -- There's more... -- Enabling the setuid bit on an executable file -- Setting the sticky bit on a directory -- Changing ACLs on a directory -- Setting up network-shared folders for Windows -- Getting ready -- How to do it...

Creating a UNIX pseudo user.