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OPS335 Lab 6

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INVESTIGATION 3: INSTALL, CONFIGURE & RUN WEBMAIL APPLICATION (Roundcube Mail)
[[Category:OPS335]][[Category:OPS335 Labs]]
==OBJECTIVE & PREPARATION==[[Image:lamp.png|thumb|right|300px|To provide additional help make your web resource more dynamic (for web apps such as webmail) several services are also required. A popular acronym to represent these foundations and servers is referred to as '''LAMP'''. It stands for '''Linux''', '''Apache''', '''MySQL''', and '''PHP''' (or ''Python'').<br><br>Image by Shmuel Csaba Otto Traian,<br>https://commons.wikimedia.org/w/index.php?curid=28224098)<br>(via: [http://creativecommons.org/licenses/by-sa/3.0 Commons Attribution-Share Alike 3.0]) ]]In this lab, we will look at several separate technologies that are used with the Apache web server to install, configure and run web applications.
According The basic purpose of the Apache web server is to serve text pages, images, and other static files. You can format those web-pages to appear nice, but they would lack dynamic functionality (i.e. the ability to change colors or font-size when the sambamouse moves over a link, button, etc). In other words using Apache web-server as a sole application would not make your web-pages more interesting.org website:
''"Samba is the standard Windows interoperability suite of programs If we want to add more features for Linux and Unixour web-page (eg. Samba is Free Software licensed under the GNU General Public Licensedynamic functionality, security, e-commerce, etc), your webserver would need additional help. To provide additional help requires several resources - more than just the Samba project web server itself. A popular acronym to represent these foundations and servers is a member of the Software Freedom Conservancyreferred to as '''LAMP'''."It stands for '''Linux''', '''Apache''', '''MySQL''', and '''PHP''' (or ''Python'').
Although In your previous OPS235 course, your second assignment may have required you setup a similar series of services in order to run a Samba server can provide many features such as printer sharing and backups, Wiki on one of your virtual machines. In this lab's primary focus is to , we will set up another example of a Samba server on '''"LAMP solution"''' that will allow the user to run webmail in a Linux server in order web-browser to allow MS Windows users to share common files from the Linux's Samba serversend and receive e-mail messages.
This lab will first === Online Resources=== * [http://www.liquidweb.com/kb/how-to-install-apache-on-centos-7/ Installing Apache Webserver on Centos7]* [http://www.w3schools.com/php/default.asp PHP Tutorial] (w3schools.com)* [http://www.w3schools.com/sql/ MySQL / SQL Language Resources] (w3schools.com) == INVESTIGATION 1: SETTING UP A WEBSERVER WITH DYNAMIC WEBPAGES == === Install, Configure & Run a Webserver (Apache) === Next we need to install, setupconfigure and run a webserver on one of our Linux VMs. '''Perform the following steps:''' #Make certain you are in your '''VM1''' machine.#Install the Apache package (the name of the package is '''httpd''').#Start the httpd service, and enable this service to start automatically upon system startup.#Using a Samba text browser such as '''lynx''' on vm1 go to http://localhost. You should get the Apache Test Page which indicates your web serveris running on the local virtual machine.#Make certain to configure your firewall to allow access to the httpd service (i. Then e. the Apache serves HTTP traffic which goes over TCP port '''80''') and keep the changes past rebooting.#Open a web-browser in your '''host''' machine and enter the following URL: '''vm1.youruserid.ops'''.<br />If you setup your Apache webserver correctly, you should be able to view the Apache Test page.#Although we will not be exploring webservers in depth, we will have you create a simple webpage for testing purposes, then later setup a web resource for webmail.#The term '''DocumentRoot''' specifies where the Apache webserver will search for documents to serve. Create the file '''index.html''' in your '''DocumentRoot''' directory with the following contents (replace the date with the current one):<br><source>Hello, this is a web page on vm1.youruserid.ops and the current time is Mar 28 22:16:27 EDT 2016!</source><ol><li value="9">If you refresh your web-browser page in your browser, you should see the contents of your ''index.html'' document. If you wish, you can specify the filename index.html in the address, but it is not necessary, since the file index.html is automatically loaded by default when the URL refers to that directory containing that file.</li></ol>  {{Admon/tip |Using the '''index.html''' file|It is considered to be a "best practice" to create '''index.html''' files for newly-created subdirectories within the '''DocumentRoot''' (or users ' '''public_html''' directories) to force a display of a web-page, instead of viewing the directories "index" listing of files (from "curious eyes"): that is why the name of the file is called ''"index.html"''.}}  <ol><li value="10">Refresh your web-page by issuing the keycombination: '''ctrl-r'''. Notice that the time doesn't change as you refresh the page. This indicates that the page is static (not dynamic) indicating that the page does not change (i.e. boring!).</li></ol> === Creating a PHP Script === In order to allow us to run a webserver application in a web-browser, we need a scripting language that will allow the web-browser to function dynamically (i.e. being able to change frequently, as opposed to being "static" or unchanging). In this section, we will access files demonstrate how a scripting language (PHP) can be used for the web-browser to react in a more dynamic fashion. {{Admon/tip |PHP Scripting Language|PHP code is considered to be a language that runs on the Linux Samba web-server (i.e. "server from Linux -side programming"). PHP code can be embedded in an HTML document (HTML code), and Windows client machines use the resources on the "server-side" to make the web document or resource more dynamic (both graphically eg. database access, etc). Although it is not the purpose of this course to learn about and command line)create PHP documents, here is a quick resource on PHP: [http://www.w3schools.com/php/default.asp PHP Tutorial]}}
=== Online Resources==='''Perform the following steps:'''* (Course Notes on Samba Server)*[http://www#'''Copy''' the '''index.tomsitprohtml''' file as '''index.com/articles/linux-server-configuration-guide-book-excerptphp''' and modify it to contain:<br><source>Hello,2-777-2this is a web page on vm1.youruserid.html Samba Server Setup] ops and the current time is <?php system(Simple setup guide for samba server]"date"); ?>!</source>
<ol><li value==INVESTIGATION 1"2">On your host machine, in the web-browser manually add '''/index.php'''. Notice that in a web browser the ''index.php'' file isn't treated as a default page and the contents don't contain the date, but instead are displaying the text in the php code you entered into the index.php file (refer to above code).</li><li>The reason this occurs is that the PHP interpreter hasn't been installed on your vm by default.</li><li>Install the '''php''' package on your vm1 machine, and restart your webserver. NOTE: INSTALLING &amp; CONFIGURING A SAMBA SERVER==The php package comes with a working default Apache configuration so you don't need to enable it manually.</li><li>Refresh the webpage in your web-browser on your host machine. You should now notice that you see the date instead of the call to the date command. Refresh your webpage several times to see how the time changes. This is simply a "trivial example" of dynamic web content does it does provide a simple demonstration of how scripting languages can be used to create more dynamic webpages.</li></ol>
In this investigation, we will set up a '''Samba server''' on our '''VM2''' machine. We will first install, configure and enable the samba server on our virtual machine, and then we will quickly test === Controlling Access to see if the Samba server works.Pages ===
For security, it is important to allow access to general areas of your webpage, but also limit access to other sub-directories that contain other webpages or documents. Penetration Testers or hackers may be able to navigate your file systems within your html directory to obtain unauthorised information.
{{Admon/important|Prerequistites|Due to the changes made in lab3There are many common-sense safeguards, '''you will now need your vm1 running (such as the DNS server)''' creating an index.html file in order for any your default directory that will display a webpage instead of your virtual machines the directory index. On the other hand, there are also safeguards that you can setup to be able provide additional protection to use the internetyour data on your web server.}}
'''Perform the following steps:'''
#Make certain As the root user on your gateway/host, try to forward incoming http connections that both arrive on your '''VM1''' and '''VM2''' machines are running.#Switch host to your '''VM2''' machine as the '''root''' userweb server on vm1.#Issue the following Linux Use an iptables command something like this:<br><source>iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to install Samba server utlity192.168.X.2</source>OR this (whichever works):<br>'''yum install samba samba<source>iptables -t nat -A PREROUTING -i *externalinterface* -p tcp --dport 80 -j DNAT --client'''to 192.168.X.2<br/source{{Admon/important |Do not save these rules|The PREROUTING rule above will redirect all HTTP requests to vm1. That will be a problem in the future when you run yum install or yum update, which downloads things over HTTP.}} #Copy You will also need to create a rule in the FORWARD chain in the file '''/etc/samba/smbdefault table to accept connections to port 80.conf''# To test this setup you' ll need to use another filename by issuing machine outside your own network. For this purpose you can simply use the host (machine running Vmware). # Have the following command:<br>external machine view both '''cp /etc/samba/smbindex.conf /etc/samba/smb.conf.originalhtml'''#Clear the contents of the configuration file by running and '''cat /dev/null > /etc/samba/smbindex.confphp'''#Edit Create a new directory called '''/etc/samba/smb.confprivate''' so that the file that contains the following lines: [global] workgroup = WORKGROUP server string = "put inside your real name here without the quotes" encrypt passwords = yes smb passwd file = /etc/samba/smbpasswd [home] comment = "put your real name here without the quotes" path = /home/<yourSenecaID> public = no writable = yes printable = no create mask = 0765<ol><li value="3">Append (add) the following parameter to the bottom of the '''[global] sectionDocumentRoot''' that will limit access to the share so that only machines in your virtual network will be able to access and move index.php inside it:</li></ol>. hosts allow = 192.168.x. 127.0# View both files again.0.1<olbr><li value="4"br>Append (add) You will now modify the settings on the following parameter web-server to prevent machines outside our network from accessing the '''[home] section''' so that only your user account can access that share:private directory.</libr></olbr> valid users = <yourSenecaID><ol><li value="5">Create a Samba account and password # Add the following directory statement to your apache configuration file. The default pathname for yourSenecaID by issuing the following commandapache configuration file is:<br>'''smbpasswd -a <yourSenecaID>/etc/httpd/conf/httpd.conf'''</li></ol>(NOTE: replace the X with your own network octet):
{{Admon/tipimportant |Changing Existing Samba Account PasswordsDo not overwrite existing settings|If you need to change a userThere should already be two Directory statements in that file. One for '''s existing Samba account password, you can issue the following command as root: /var/www''' and one for '''smbpasswd username/var/www/html'''. Add your new Directory statement after them. Do not overwrite them.}}
<olsource><li value="6Directory ">Confirm the user you created has been added using the following command:<br>'''pdbedit -L -v'''</li><li>Test and review your configuration with the command:<br>'''testparm'''</li><li>Use the '''systemctl''' command to start the smb.service and enable the service to run on boot-up<var/li><li>Since we set SELinux to enforcing, we will need to tell it to allow samba access to home directories: '''setsebool -P samba_enable_home_dirs 1'''<www/li><li>Use the '''ss -nautp''' command to see with port Samba is running on.<html/li><li>Use the information in the previous step to modify the firewall on VM2 machine to allow samba traffic.</li><li>Test to see that you can connect to your Samba server (locally) by issuing the following command:<br>'''smbclient -U <yourSenecaID> -L 127.0.0.1'''</li><li>When prompted, enter your Samba account password.</li><li>The output from that issued command show appear similar to example displayed below:</li></olprivate"> Sharename Type Comment --------- ---- ------- home Disk Your Name AllowOverride None IPC$ IPC IPC Service ("Your Name") Domain=[WORKGROUP] OS=[Windows 6 Require ip 192.1] Server=[Samba 4168.2.3] Server Comment ------ ------- WorkGroup Master --------- ------ <ol><li value="13">To access the Samba client shell on your local Samba share, issue the following command:<br>'''smbclient '\\127.0X.0.1\home' -U <yourSenecaID>'''</li><li>Enter your Samba account password.24</li><li>Issue the help command to note common commands (''dir'', ''cd'', ''ls'', ''put'', ''get''). Note how similar they are to ''sftp'' commands.</li><li>Enter '''exit''' to terminal your local Samba session.</liDirectory></olsource>
You can use smbclient This sets up separate rules and access permissions for that subdirectory. Your should no longer be able to accessany pages in the private directory (or any sub-directories of it) from external machines, browse and share files within other Linux and Windows servers using a variety of tools which will be demonstrated in Investigations 2 and 3but your internal machines (including your host) should still have access.
'''Record steps, commands, and your observations in INVESTIGATION 1 in your OPS335 lab log-book'''
==INVESTIGATION 2: CONNECTING TO A LINUX SMB SERVER FROM A LINUX CLIENTSETTING UP AN ONLINE DATABASE==
In this investigation you will explore some The next piece of the different ways puzzle is installing, configuring, and running a database server to access a shared directory from a Linux client machine (VM1)support your webmail application that will be installed and setup later in this lab.
'''Perform the following steps on your VM1'''=== Install, Configure and Run MySQL Database Server ===
=== Using smbclient ===*Install the '''samba-client''' MySQL is used to allow storage and '''cifs-utils''' packagesretrieval of structured data.*Use the "smbclient" SQL is a command in a terminal window. smbclient '\\vm2\home' -U <learnid>*After entering your password you should get a prompt similar language (used by scripting languages such as PHP) to smb: \>*Enter the ls command allow programmers to see access databases contained within a list of the files in your home directory. smb: \> ls*Once you have access to the directory use the get and put commands server (similar to ftpor other servers via a network) to move files.*When you are finished close be used within web-based applications via the connection.*Note that this tool only gave temporary access with a limited set of commandsweb-browser.
=== Using We won'mount -t cifs' ===*The next way is to use spend much time learning the mount commanddetails of MySQL configuration but you need a basic server set up.*Use the mount command on '''vm1''' to mount your home directory mkdir /tmp/vm2-home mount -t cifs //vm2/home /tmp/vm2-home -o username=<learnid> ls /tmp/vm2You may remember when setting up MySQL from OPS235 -home*Create a file in that directory, then switch to '''vm2''' to confirm that it was created.*Use umount on '''vm1''' to unmount that directory.*Note that this tool would leave is basically the directory mounted until the machine rebooted or it was manually unmounted. It would also allow other users access to the directory, as it effectively became part of the local filesystem. It could even be added to fstab to be mounted on boot (if it didn't need a password)same concept.
'''The following steps require {{Admon/tip |MySQL / SQL Language Resources|Again, MySQL can be a graphical interface; perform them complex topic: Seneca has an entire course that concentrates on your HOST'''using SQL commands! Here is a link to MySQL / SQL Language resources: [http://www.w3schools.com/sql/ MySQL / SQL Language Resources].}}
=== Using Nautilus to browse Samba shares ===*Install the '''samba-client''' and '''cifs-utils''' packages.*Use Perform the "Places" menu from the desktop and open 'Browse Network'.*From the menu in the side-bar of the files tool, choose 'Connect to Server'. *Enter 'smbfollowing steps://vm2/home' as the location, and enter your samba password in the prompt.**Where vm2 is the name of the server, and home is the name of the directory it is sharing.*After you have checked that you can access your files, unmount the share by right-clicking its icon in the side-bar and clicking 'Unmount'.
=== Using a browser ===*You #Install '''mariadb-server'''.<br /><br /> The MySQL and MariaDB are actually two <u>separate</u> projects run by different groups, yet they are compatible; therefore, you can also use a web browser with support for documentation from one to configure the SMB protocol such as Konquerorother.<br><br>**Note #'''NOTE:''' When installing mariadb, make certain that firefox does you have not have such supportjust the '''client''' but also the '''server software'''. *If Konqueror is not installed then install it with #When you start the command: yum install kdebase*Start KonquerorMySQL service, check the web/system log file browser, and in for instructions regarding how to set the address bar enter root password. Even though we will '''not''' configure our MySQL service to be '''accessible over the followingnetwork''', it is accepted as a "best practice" configuring for network access for each MySQL installation. smb#Note that the MySQL service has two root passwords:<ul><li>For the localhost</li><li>For external requests</vm2li></homeul>*Enter your username and password when prompted#Start the mariadb server, then refer to the log file (by running '''journalctl -xe''') to learn how to run the two commands in order to generate the appropriate passwords.*Double click on <br><br>NOTE: Use a file password you have some text in.**Open it with gedit, make some changesup yourself, and save it.**When promptedbut do <u>not</u> use your own secret password, choose to upload the since you will be storing that password in a plain text filefor later reference.*Close Konqueror.*cat #Start the file on your VM2 to service and ensure that it will start automatically every time the changes were properly uploadedmachine boots.
'''Record steps, commands, and your observations from this INVESTIGATION in your OPS335 lab log-book'''=== Test Connection to MySQL Database Server ===
==INVESTIGATION 3: CONNECTING TO A SAMBA SERVER FROM A WINDOWS CLIENT==While the web server (with php), and MySQL server may be working individually, we need to ensure that they can connect to each other. Since this test will involve storing the database password in a plain-text html file, we want to make sure no one else can access it.
This investigation will configure your VM2 machine to act as a Samba File server to allow Windows OS Users access to '''Perform the Linux Samba server files.following steps:'''
# Modify the Directory statement for your '''private''' directory to prevent any machine other than your vm1 from accessing it.# Re-start the web-server and try to access the page from another machine. Make sure that you can '''not''' do so before you continue.# Install the '''php-mysql''' module so that the installation of php your web server is using can execute sql statements. You will have to restart the service after installing it.#Modify the '''index.php''' page in your '''private''' directory to match the code below. This will test that your web server can connect to the database (replace the <user> and <password> with values appropriate for your machine):<br><source><?php$mysqli ===Accessing Files new mysqli("localhost", "<user>", "<password>");if ($mysqli->connect_errno) { echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;}echo $mysqli->host_info . "\n";?></source>#Once that page shows a successful connection on a Linux Samba Server your VM ('''Localhost via UNIX socket''' via Windows Explorer ===the '''lynx''' application) this step is complete.
With some additional "tweaking" to your Linux Samba You have now established that the web server configuration file, you should be is able to access files on that file from a Windows machine on run code which can interract with the same networkdatabase. You This will be creating a Samba share for your home directory allow dynamic pages to make use of information stored there when providing resources to your regular user accountusers.
'''Perform the following tasks:Record steps, commands, and your observations in INVESTIGATION 2 in your OPS335 lab log-book'''
# Make certain that your '''VM2''' machine is running, is still allowing samba traffic through the firewall, and is still running the samba service.# Power up a Windows system in the lab and login.# Add the prerouting and forwarding rules to your host's iptables necessary to redirect samba traffic from outside your network to your VM 2.# Modify the hosts allow setting on your '''vm2''' to also accept connections from the windows machine you are using.# Open the Windows Explorer application.# At the top of the application== INVESTIGATION 3: INSTALL, enter the following:<br>'''\\IPADDR_OF_HOST_MACHINE\home'''CONFIGURE &amp; RUN WEBMAIL APPLICATION (Roundcube Mail) ==
{| cellpadding="15" width="40%" align="right" cellpadding="10"
|- valign="top"
 |width="10%" |[[Image:samba-loginRoundcube.png|thumb|right|300px200px|You will be prompted (once only) for the Samba user-name and password for your '''VM2Roundcube''' machine)webmail application Logo<br>GPL,<br> https://commons. wikimedia.org/w/index.php?curid=1772791]] |width="10%" |[[Image:samba3roundcube-map-drivepic.png|thumb|right|300px|You can create a Screencapture of '''mapped network drive (z:)roundcube''' for your Linux Samba server network share)webmail application running in order to send and receive mail messages via a web-browser. ]]  
|}
In the investigation, we will simply install, configure and run the '''roundcube''' webmail application.'''Perform the following steps on vm1:'''<ol><li value=>Download the lastest '''Complete''' "5zipped tarball"> You will be prompted to enter your VM2 username and password from their website (one time onlyhttps://roundcube.net/download/). Refer to diagram using wget on rightthe download link .<br/li><brli>Extract the "zipped tarball" and rename the generated directory that contains download source code to: '''webmail'''NOTE:. Also make sure that '''webmail''' is a sub-directory of your '''DocumentRoot'''.* Use the '''--no-same-owner''' It may take approximately 30 seconds option when extracting the tar achive to display ensure that the files do not keep the file contentsoriginal owner (who will not exist on your system).<br/li><brli>Change the ownership of the '''temp''' and '''logs''' directories so they belong to '''apache'''.</li><li>Where your successfulIf you're not in Andrew's sections and you have SELinux enabled: This service needs to be able to write to several directories ('''temp''' and '''logs''') that SELinux prevents write access to. If you are in a section that has SELinux set to '''enforcing''', run the following commands to let it know that apache should be allowed to write to files in those directories.<source>semanage fcontext -a -t httpd_log_t '/var/www/html/webmail/temp(/.*)?'semanage fcontext -a -t httpd_log_t '/var/www/html/webmail/logs(/.*)? 'restorecon -v -R /var/www/html/webmail</source>::NOTE: If your machine does nothave the '''semanage''' command, try use yum to troubleshoot install the problem first, then ask your lab assistant or instructor for assistance'''policycoreutils-python''' package.You will also need to tell selinux to allow the webserver to open connections to the MTAs with <source>setsebool -P httpd_can_network_connect 1</source></li><li>Close In the Windows Explorer application windowdirectory now named "webmail", there will be a file named '''INSTALL''' which will walk you through the rest of the Roundcube installation.<br /li><libr />Click on Some installation tips to consider:::* Be careful about copying &amp; pasting the MySQL setup part: take time and pay attention to detail: do not try to "rush it".::* You will need to install additional Apache modules including: '''STARTphp-xml''' menu, and click on '''This PCphp-mbstring'''.::* Don't forget to set the password in the roundcube configuration.</li><li>Click To make things easier, RoundCube has a well configured installation page available through your local web browser (You will see a note about it in the '''INSTALL''' file).</li>  ::* Go onto your host, open Firefox and on the address bar type '''vm1.<yourSenecaID>.ops/webmail/installer''', make sure your dns on host can resolve the web address. Alternatively, instead of "vm1.<yourSenecaID>.ops" you can input the Map Network Drive buttonip address of your vm1, '''192.168.X.2/webmail/installer''', and create a change X to your own IP octet. ::* Inside the web browser installer, ensure all required options are "'''mapped network driveok''' (called it drive ", if "'''ZDOM:not ok'''" it means you need to install additional php packages (yum install php-xml php-mbstring) which . Once everything is a Samba share of your VM2 machine for ready (it will not let you continue otherwise) click next go to the next page. ::* On the next page, under the home directory'''IMAP settings''' insert '''vm3.</liyourSenecaID>.ops''' in '''default_host''' field and '''143''' in '''default_port''' field. Under '''SMTP settings''' insert '''vm2.<liyourSenecaID>When finished.ops''' in '''smtp_server''' field, click on and '''Network25''' in Windows file manager to confirm '''smtp_port''' field. Ensure '''smtp_user/smtp_pass''' is '''empty''' and '''uncheck''' the "Use the current IMAP username and password for SMTP authentication" checkbox.::* Under '''Database setup''' '''db_dsnw''', enter "localhost" as your database server, "roundcubemail" for database name. Put "roundcube" as Database user, and the password you set for the roundcube user when you configured that in the network share is presentprevious step for database password. Everything else can be left as default.</li><li>Try ::* Click Next to create a the configuration file on Windows on , then download it to your Linux Samba machine'''host'''. By default it will be saved under '''~yourSenecaID/Downloads'''. Were you able to create a save a Transfer that file?</li><li>Switch '''to your VM2 machine vm1''' using '''scp''' and check place it inside '''/var/www/html/webmail/config''' folder. ::* Go to see test config page if that you are not there already and "Check config file was created " should be ok. "Check DB config" should also be ok, if not check your mysql settings. ::* Make sure your SMTP and IMAP servers are running, then finally test your configuration by sending email using your smtp server through test field provided by webmail installer, you should receive a test email sent by RoundCube. Test your IMAP settings by simply loging in with your home directorySenecaID and vm3 password on the same webpage. ::* If everything works properly you can '''skip to''' step 9. *Remember you can edit the configuration file manually by editing "/var/www/html/webmail/config/config.inc.php".</li></olli>Note that both of your IMAP and SMTP servers are on different machines (i.e. not on vm1). Therefore, you should see custom values in the following parameters in the Roundcube configuration file:
<source>$config['smtp_server']
$config['smtp_user'] = '';
$config['smtp_pass'] = '';
$config['default_host']
$config['default_port']</source>
:::'''Record steps, commands, and your observations from this INVESTIGATION in your OPS335 lab log-bookNOTE:'''The last <u>two</u> entries above refer to your IMAP server
==COMPLETING THE LAB==</li>In completing this lab <li>Now that you have gained experience using a service that allows remote access Roundcube installed it is time to files stored test if the roundcube webmail application is working by logging on a Linux server, then sending and receiving e-mail messages:*Using the Firefox webbrowser, navigate to '''vm1.<yourdomain>. You have also learned how ops/webmail''' and login (using the username only).*Use the interface provided to use several different tools to access those files, both send and receive email.</li><li>If mail sent through roundcube is sending from a Linux and Windows clientthe wrong domain (i.e. user@vm3.yourdomain.ops instead of user@yourdomain.ops), each user can override it in the settings tab, or you can set:::* '''$config['mail_domain']''' </li></ol>
'''Depending on Record steps, commands, and your professor you will either be asked to submit the observations in INVESTIGATION 3 in your OPS335 lab in class, or online. Follow the appropriate set of instructions below.log-book'''
===Online Submission (Peter Callaghan{{Admon/important |Backup your VMs!|You MUST perform a 's Classes only)===Follow ''full backup''' of ALL of your VMs whenever you complete your '''OPS335 labs''' or when working on your '''OPS335 assignments'''. You should be using the instructions for lab 6 on moodledump or rsync command, and you should use the Bash shell script that you were advised to create in order to backup all of your VMs.}}
===In Class Submission=COMPLETING THE LAB =='''Arrange evidence (command output) for each You now have a complete LAMP stack and could host a variety of these items web-pages that could include dynamically generated content and database access. You also have a webpage that is relying on your screen, then ask your instructor a number of different services cooperating in order for it to review them and sign off on the lab's completion:'''work properly.
::<span style="color:green;font-size:1==Online Submission===Follow the instructions for lab 6 on blackboard.5em;">&#x2713;</span> Proof of network share of VM2 machine from Windows VM via Windows Explorer application!--::<span style="color==Andrew's sections=== You may choose to:green;font-size:1* Submit screenshots of your work on Blackboard, in which case you don't need to come to the lab.5em;">&#x2713;</span> Firewall settings on * Or come to the lab, show me your Windows VM work, and talk to allow Linux Samba network share::<span style="color:green;font-size:1me about it.5em;">&#x2713;</span> Display contents of I want to hear what you've learned and answer any questions you have. You''/etc/samba/smbll get the same grade regardless of how you choose to submit your work.conf''' file on VM2 machine::<span style="color:green;font-size:1.5em;">&#x2713;</span> Firewall exceptions (both machines) to allow Samba traffic::<span style="color:green;font-size:1.5em;">&#x2713;</span>Download the labcheck6.bash checking bash shell script by issuing the command:<br><br>and run '''wget httphttps://matrix.senecacict.onsenecacollege.ca/~peterandrew.callaghansmith/filesops335/OPS335/labcheck6labcheck5.bash'''<br><br>set execute permission and run the shell script on your '''c7hosthost''' machine. ::*For '''Peter's classes''', follow his Online Submission instructions in Moodle.::*For '''Murray's classes''', run command (piping to the '''more''' command) and show output to instructor.
::<span style="color:green;font-size:1.5em;">&#x2713;</span>Completed Lab6 log-book notes.
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==EXPLORATION QUESTIONS==
 #What does SMB stand for?#What does CIFS the term LAMP stand for?Briefly describe the purpose of each of the following items in LAMP.#What is the purpose of the '''testparm''' commandmajor difference between a static web document and a dynamic document?#What does the text inside square brackets in the '''smb.conf''' file term "server-side programming" mean? (e.g., "[home]").#Explain What is the meaning purpose of the line "create mask = 0765" in the smbcreating and using an index.conf html file?#What does is the '''smbpasswd''' command dopurpose of creating and using an index.php file?
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