Debian10.13 : WEB Server Apache2

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WEB Server Apache2

WEB Server Apache2

Allow http:80 and https:443 ports in UFW before installation

# ufw allow http
# ufw allow https
# ufw reload

1. Apache2 Installation and Configuration

Install Apache2

# apt -y install apache2

2. Basic Apache2 Configuration

# vi /etc/apache2/conf-enabled/security.conf
# Line 25：change
ServerTokens 　Prod

# vi /etc/apache2/mods-enabled/dir.conf
# Line 2：Check file names accessible by directory name only
DirectoryIndex index.html index.cgi index.pl index.php index.xhtml i ndex.htm

# vi /etc/apache2/apache2.conf
# Line 70：Server name added
ServerName [FQDN]
# Line 172：change
AllowOverride ALL

# vi /etc/apache2/sites-available/000-default.conf
# Line 11：Administrator address change
ServerAdmin [Mail address]

Apache restart
# systemctl restart apache2

3. Apache2; Using Perl Scripts

Enable CGI to make Perl scripts availableEnable CGI to make Perl scripts available
①Perl install

# apt -y install perl

②Enable CGI module and restart

# a2enmod cgid
# systemctl restart apache2

③Confirm CGI module is enabled
Test Script Creation

# vi /usr/lib/cgi-bin/test_script
#!/usr/bin/perl
print "Content-type: text/html\n\n" ;
print "Hello CGI\n"

Authorize script files

# chmod 705 /usr/lib/cgi-bin/test_script

operation check

# curl http://localhost/cgi-bin/test_script
“curl: If you get a "Command not found" message
# apt install curl
again
# curl http://localhost/cgi-bin/test_script
Hello CGI

4 Apache2 : Using PHP Scripts

①PHP install

# apt -y install php php-cgi libapache2-mod-php php-common php-pear php-mbstring

②Apache2 Configuration

# a2enconf php7.3-cgi
nabling conf php7.3-cgi.
To activate the new configuration, you need to run:
systemctl reload apache2

# vi /etc/php/7.3/apache2/php.ini
# Line 841 : change
#upload_max_filesize = 2M
upload_max_filesize = 200M
# Line 956：Uncomment and set time zone
date.timezone = "Asia/Tokyo"

③Create a PHP test page and check its operation

# vi /var/www/html/index.php
<?php
phpinfo();
?>

Access http://[server IP]/index.php with a browser and if the following screen appears, OK

5. Virtual Host Settings

Copy the default configuration file (file name is arbitrary, in this case vhost.conf as an example) and configure the virtual host settings

# cd /etc/apache2/sites-available/
# cp 000-default.conf vhost.conf

Edit configuration file

# vi vhost.conf
 <VirtualHost *:80>
～omission～
ServerName <FQDN>
ServerAdmin [Administrator's email address]
DocumentRoot /var/www/html/[FQDN]/
～omission～
ErrorLog ${APACHE_LOG_DIR}/[FQDN].error.log
CustomLog ${APACHE_LOG_DIR}/[FQDN].access.log combined
～omission～
 </VirtualHost>

Symbolic link to the configuration file to disable the default configuration file

# cd /etc/apache2/sites-available/
# a2ensite vhost.conf
# a2dissite 000-default.conf　　　Default Disable Apache Restart
# systemctl restart apache2

Edit hosts file

# vi /etc/hosts
127.0.0.1    [FQDN]

directory creation

# mkdir /var/www/html/[FQDN]

Create test pages and check operation

# vi /var/www/html/<FQDN>/index.html
<html>
<body>
<div style="width: 100%; font-size: 40px; font-weight: bold; text-align: center;">
Virtual Host Test Page
</div>
</body>
</html>

Access http://[FQDN]/index.html with a browser to check.

6. Digest authentication with Apache2

Since Basic Authentication, a well-known authentication authorization method for http, sends authentication information in plain text, there is a risk of ID and password leakage if the packet is intercepted.
On the other hand, Digest Authentication encrypts and transmits authentication information, so there is almost no risk of information leakage.

6.1 Create password file for Digest authentication

Specify an authenticated area called realm. This realm allows the same directory to be accessed as authenticated.
As an example, we will create a user named "secretuser" with "DigestAuth" as the realm. Execute the following command and enter the password for "secretuser" when prompted.

# /usr/bin/htdigest -c /etc/apache2/.digestauth "DigestAuth" secretuser

Confirmation

# cat /etc/apache2/.digestauth
secretuser:DigestAuth:64939177c7b7c6eac3687925b27e771d

As above, secretuser and encrypted password are created

6.2 Edit Apache configuration file

Specify the directory to which Digest authentication will be applied. (In this case, specify the secret directory.)

# vi /etc/apache2/apache2.conf

Add the following at the end

<Directory /var/www/html/[FQDN]/secret>
AuthType Digest
AuthName "DigestAuth"
AuthDigestDomain /secret/
AuthUserFile /etc/apache2/.digestauth
Require valid-user
</Directory>

Create a directory for Digest authentication

# mkdir  /var/www/html/[FQDN]/secret

1	# mkdir /var/www/html/[FQDN]/secret

Enable Digest authentication and reboot

# a2enmod auth_digest
# systemctl restart apache2

When accessing http://[FQDN]/secret with a browser, a screen will appear asking for "user name" and "password".

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