Topic 208: Web Services

Perteneciente a LPIC-2

Deberás poder instalar y configurar un servidor web. Configurar un servidor web para proporcionar HTTPS e instalar y configurar un servidor proxy, incluidas las políticas de acceso, la autenticación y el uso de recursos. Por último, deberás poder instalar y configurar un servidor proxy inverso, Nginx. Se incluye la configuración básica de Nginx como servidor HTTP.

Módulos:

• 208.1 Implementing a web server (4)
• 208.2 Apache configuration for HTTPS (3)
• 208.3 Implementing a proxy server (2)
• 208.4 Implementing Nginx as a web server and a reverse proxy (2)

De cara al examen, habría que tener claro:

• Configuración un servidor Apache básico.
• Conocer las principales directivas de Apache.
• Configuración hosts virtuales.
• Configuración la autentificación de usuarios.
• Conocer los conceptos de certificados digitales.
• Configurar un sitio web seguro con SSL.
• Configuración básica del servidor proxy squid.
• Configuración un servidor web Nginx.
• Configuración un proxy reverso con Nginx.

There is a restricted area in an Apache site, which requires users to authenticate against the file /srv/www/security/site-passwd. Which command is used to CHANGE the password of existing users, without losing data, when Basic authentication is being used.

• htpasswd -c /srv/www/security/site-passwd user
• htpasswd /srv/www/security/site-passwd user (Solución)
• htpasswd -n /srv/www/security/site-passwd user
• htpasswd -D /srv/www/security/site-passwd user
• None of the above.

Con la primera opción estaríamos creando el fichero de nuevo, cargándonos el existente.

When Apache is configured to use name-based virtual hosts:

• it's also necessary to configure a different IP address for each virtual host.
• The Listen directive is ignored by the server.
• it starts multiple daemons (one for each virtual host).
• it's also necessary to create a VirtualHost block for the main host. (Solución)
• only the directives ServerName and DocumentRoot may be used inside a block

Which of the following lines in the Apache configuration file would allow only clients with a valid certificate to access the website?

• SSLCA conf/ca.crt
• AuthType ssl
• IfModule libexec/ssl.c
• SSLRequire
• SSLVerifyClient require (Solución)

In which Apache context should SSL support be activated?

• In a VirtualHost directive (Solución)
• In a Location directive
• In a Directory directive which is set to /
• In a SSLHost directive

Which of the following is recommended to reduce Squid's consumption of disk resources?

• Disable the use of access lists.
• Reduce the size of cache_dir in the configuration file. (Solución)
• Rotate log files regularly.
• Disable logging of fully qualified domain names.
• Reduce the number of child processes to be started in the configuration file.

Which ACL type in Squid's configuration file is used for authentication purposes?

• proxyAuth
• proxy_auth (Solución)
• proxy_passwd
• Auth
• auth_required

When trying to reverse proxy a web server through Nginx, what keyword is missing from the following configuration sample?

location / {
__________ http://proxiedserver:8080;
}

• remote_proxy
• reverse_proxy
• proxy_reverse
• proxy_pass (Solución)

With Nginx, which of the following directives is used to proxy requests to a FastCGI application?

• fastcgi_pass (Solución)
• fastcgi_proxy
• proxy_fastcgi
• proxy_fastcgi_pass

Name the two kinds of virtual hosts that can be configured in Apache.

• name-based, ip-based (Solución)
• public, private
• None of the above
• internal, external

The command 'htpasswd -c /etc/httpd/passswd user' would:

• Copy the /etc/passwd file to /etc/httpd/passwd and add the user account to it
• None of the above
• Create a new password file in /etc/httpd and prompt for a password for the user account to add to it (Solución)
• Remove the user account for the password file at /etc/httpd/passwd

Which of the following directories is the default site content directory (initial installation configuration)?

• /var/www/html (Solución)
• /var/www
• /var/html
• /usr/share/html

The 'mod_ssl' module provides the ability for you to generate an SSL certificate for use within your website

• Verdadero
• Falso (Solución)

When installing the Apache web server, the primary configuration file can be called either 'httpd.conf' or 'apache2.conf' depending on the distribution type and version.

• Verdadero (Solución)
• Falso