Apache HTTP Server

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[[Category:Network]] ==Apache HTTP Server== ==Modules== ===UserDir=== UserDir module allows users on the server have a web site in their home directory. ===Configuration=== -Check if the module is available in the directory <code>/etc/apache2/mods-available/</code> -Open the conf file, <code>/etc/apache2/mods-available/userdir.conf</code>. <pre> $ gksudo gedit /etc/apache2/mods-available/userdir.conf & </pre> <IfModule mod_userdir.c> UserDir public_html UserDir disabled root '''UserDir disabled''' '''UserDir enabled username''' <Directory /home/*/public_html> AllowOverride FileInfo AuthConfig Limit # Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec Options MultiViews SymLinksIfOwnerMatch IncludesNoExec </Directory> </IfModule> -To prevent the files and directories from being listed when there are no index files such as index.html, index.htm and so on, remove '''Indexes''' from the following line Options MultiViews '''Indexes''' SymLinksIfOwnerMatch IncludesNoExec So it would be like this Options MultiViews SymLinksIfOwnerMatch IncludesNoExec It is already commented out from the above example. -Enable the module. <pre> $ cd cd /etc/apache2/mods-enabled/ $ sudo ln -s ../mods-available/userdir.load userdir.load $ sudo ln -s ../mods-available/userdir.conf userdir.conf </pre> -Restart the Apache server <pre> $ sudo /etc/init.d/apache2 restart </pre> ===References=== http://httpd.apache.org/docs/2.0/en/mod/mod_userdir.html ==Virtual Hosts== -make a copy of the default virtual host configuration to have your own. <pre> $ sudo cp /etc/apache2/sites-available/default /etc/apache2/sites-available/mysite </pre> -e.g. Ubuntu Linux 8.04 Hardy NameVirtualHost * <VirtualHost *> ServerAdmin kevin@localhost DocumentRoot /var/www/ <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> # Options Indexes FollowSymLinks MultiViews Options FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined ServerSignature On Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> </VirtualHost> <div style="font-weight: bolder;"> <VirtualHost *> ServerAdmin kevin@localhost DocumentRoot /home/kevin/public_html ServerName kevin.kevin-home ErrorLog /home/kevin/logs/error_log TransferLog /home/kevin/logs/access_log </VirtualHost> </div> -Many virtual hosts with http & https, NameVirtualHost *:80 NameVirtualHost *:443 <VirtualHost *:443> ServerAdmin kevin@yoursite.com SSLEngine on SSLOptions +StrictRequire SSLCertificateFile /etc/ssl/certs/server.crt SSLCertificateKeyFile /etc/ssl/private/server.key DocumentRoot /var/www/ ServerName yoursite.com <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> # Options Indexes FollowSymLinks MultiViews Options FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined ServerSignature On Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> </VirtualHost> <VirtualHost *:80> ServerAdmin kevin@yoursite.com DocumentRoot /var/www/ ServerName yoursite.com <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> # Options Indexes FollowSymLinks MultiViews Options FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined ServerSignature On Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> </VirtualHost> #<VirtualHost *:80> # ServerAdmin kevin@yoursite.com # # DocumentRoot /home/kevin/public_html # ServerName kevin.yoursite.com # ErrorLog /home/kevin/logs/error_log # TransferLog /home/kevin/logs/access_log #</VirtualHost> <VirtualHost *:80> ServerAdmin kevin@yoursite.com DocumentRoot /var/www/blog ServerName blog.yoursite.com </VirtualHost> -<code>NameVirtualHost *:443</code> is not necessary if there is only one virtual host using 443 port. -Ubuntu Linux 8.10 Intrepid <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName your-domain.com DocumentRoot /var/www/ <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> # Options Indexes FollowSymLinks MultiViews Options FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> </VirtualHost> -Copy <code>default-ssl</code> to <code>mysite-ssl</code> and add the key file info. <IfModule mod_ssl.c> <VirtualHost *:443> ServerAdmin webmaster@localhost ServerName your-domain.com DocumentRoot /var/www/ <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> # Options Indexes FollowSymLinks MultiViews Options FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/ssl_access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> # SSL Engine Switch: # Enable/Disable SSL for this virtual host. SSLEngine on # A self-signed (snakeoil) certificate can be created by installing # the ssl-cert package. See # /usr/share/doc/apache2.2-common/README.Debian.gz for more info. # If both key and certificate are stored in the same file, only the # SSLCertificateFile directive is needed. # SSLCertificateFile /etc/ssl/certs/ssl-cert-snakeoil.pem # SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key '''SSLCertificateFile /etc/ssl/certs/server.crt''' '''SSLCertificateKeyFile /etc/ssl/private/server.key''' # Server Certificate Chain: # Point SSLCertificateChainFile at a file containing the # concatenation of PEM encoded CA certificates which form the # certificate chain for the server certificate. Alternatively # the referenced file can be the same as SSLCertificateFile # when the CA certificates are directly appended to the server # certificate for convinience. #SSLCertificateChainFile /etc/apache2/ssl.crt/server-ca.crt # Certificate Authority (CA): # Set the CA certificate verification path where to find CA # certificates for client authentication or alternatively one # huge file containing all of them (file must be PEM encoded) # Note: Inside SSLCACertificatePath you need hash symlinks # to point to the certificate files. Use the provided # Makefile to update the hash symlinks after changes. #SSLCACertificatePath /etc/ssl/certs/ #SSLCACertificateFile /etc/apache2/ssl.crt/ca-bundle.crt # Certificate Revocation Lists (CRL): # Set the CA revocation path where to find CA CRLs for client # authentication or alternatively one huge file containing all # of them (file must be PEM encoded) # Note: Inside SSLCARevocationPath you need hash symlinks # to point to the certificate files. Use the provided # Makefile to update the hash symlinks after changes. #SSLCARevocationPath /etc/apache2/ssl.crl/ #SSLCARevocationFile /etc/apache2/ssl.crl/ca-bundle.crl # Client Authentication (Type): # Client certificate verification type and depth. Types are # none, optional, require and optional_no_ca. Depth is a # number which specifies how deeply to verify the certificate # issuer chain before deciding the certificate is not valid. #SSLVerifyClient require #SSLVerifyDepth 10 # Access Control: # With SSLRequire you can do per-directory access control based # on arbitrary complex boolean expressions containing server # variable checks and other lookup directives. The syntax is a # mixture between C and Perl. See the mod_ssl documentation # for more details. #<Location /> #SSLRequire ( %{SSL_CIPHER} !~ m/^(EXP|NULL)/ \ # and %{SSL_CLIENT_S_DN_O} eq "Snake Oil, Ltd." \ # and %{SSL_CLIENT_S_DN_OU} in {"Staff", "CA", "Dev"} \ # and %{TIME_WDAY} >= 1 and %{TIME_WDAY} <= 5 \ # and %{TIME_HOUR} >= 8 and %{TIME_HOUR} <= 20 ) \ # or %{REMOTE_ADDR} =~ m/^192\.76\.162\.[0-9]+$/ #</Location> # SSL Engine Options: # Set various options for the SSL engine. # o FakeBasicAuth: # Translate the client X.509 into a Basic Authorisation. This means that # the standard Auth/DBMAuth methods can be used for access control. The # user name is the `one line' version of the client's X.509 certificate. # Note that no password is obtained from the user. Every entry in the user # file needs this password: `xxj31ZMTZzkVA'. # o ExportCertData: # This exports two additional environment variables: SSL_CLIENT_CERT and # SSL_SERVER_CERT. These contain the PEM-encoded certificates of the # server (always existing) and the client (only existing when client # authentication is used). This can be used to import the certificates # into CGI scripts. # o StdEnvVars: # This exports the standard SSL/TLS related `SSL_*' environment variables. # Per default this exportation is switched off for performance reasons, # because the extraction step is an expensive operation and is usually # useless for serving static content. So one usually enables the # exportation for CGI and SSI requests only. # o StrictRequire: # This denies access when "SSLRequireSSL" or "SSLRequire" applied even # under a "Satisfy any" situation, i.e. when it applies access is denied # and no other module can change it. # o OptRenegotiate: # This enables optimized SSL connection renegotiation handling when SSL # directives are used in per-directory context. #SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire <FilesMatch "\.(cgi|shtml|phtml|php)$"> SSLOptions +StdEnvVars </FilesMatch> <Directory /usr/lib/cgi-bin> SSLOptions +StdEnvVars </Directory> # SSL Protocol Adjustments: # The safe and default but still SSL/TLS standard compliant shutdown # approach is that mod_ssl sends the close notify alert but doesn't wait for # the close notify alert from client. When you need a different shutdown # approach you can use one of the following variables: # o ssl-unclean-shutdown: # This forces an unclean shutdown when the connection is closed, i.e. no # SSL close notify alert is send or allowed to received. This violates # the SSL/TLS standard but is needed for some brain-dead browsers. Use # this when you receive I/O errors because of the standard approach where # mod_ssl sends the close notify alert. # o ssl-accurate-shutdown: # This forces an accurate shutdown when the connection is closed, i.e. a # SSL close notify alert is send and mod_ssl waits for the close notify # alert of the client. This is 100% SSL/TLS standard compliant, but in # practice often causes hanging connections with brain-dead browsers. Use # this only for browsers where you know that their SSL implementation # works correctly. # Notice: Most problems of broken clients are also related to the HTTP # keep-alive facility, so you usually additionally want to disable # keep-alive for those clients, too. Use variable "nokeepalive" for this. # Similarly, one has to force some clients to use HTTP/1.0 to workaround # their broken HTTP/1.1 implementation. Use variables "downgrade-1.0" and # "force-response-1.0" for this. BrowserMatch ".*MSIE.*" \ nokeepalive ssl-unclean-shutdown \ downgrade-1.0 force-response-1.0 </VirtualHost> </IfModule> *Although Apache does not support SSL name based virtual hosts, it might be required that more than one sub-domain has to be accessed through SSL only. There is a simple workaround that is added <code>NameVirtualHost *:443</code> to the <code>ports.conf</code> file. So it may look like # If you just change the port or add more ports here, you will likely also # have to change the VirtualHost statement in # /etc/apache2/sites-enabled/000-default NameVirtualHost *:80 Listen 80 <IfModule mod_ssl.c> # SSL name based virtual hosts are not yet supported, therefore no # NameVirtualHost statement here '''NameVirtualHost *:443''' Listen 443 </IfModule> ==Enable .htaccess== -Change '''<code>AllowOverride None</code>''' e.g) <Directory /> Options FollowSymLinks AllowOverride None </Directory> to <Directory /> Options FollowSymLinks <span style="color:red; font-weight: bolder;">AllowOverride All</span> </Directory> -make changes as you wish then disable the default one and enable yours. <pre> $ sudo a2dissite default && sudo a2ensite mysite </pre> -To check the virtual host setting <pre> $ apache2 -S </pre> -If it displays an error message like this <pre> apache2: bad user name ${APACHE_RUN_USER} </pre> -Try this <pre> $ apache2ctl -S </pre> ==Using SSL== ===Generating a Certificate Signing Request (CSR)=== ====Generate A Key for the CSR==== -To generate the keys for the Certificate Signing Request (CSR) run the following command from a terminal prompt: $ openssl genrsa -des3 -out server.key 1024 Generating RSA private key, 1024 bit long modulus .......................++++++ .++++++ e is 65537 (0x10001) Enter pass phrase for server.key:'''your passphrase''' Verifying - Enter pass phrase for server.key:'''your confirm passphrase''' -To See the details of the RSA private key. <pre> $ openssl rsa -noout -text -in server.key </pre> ====Remove Passphrase from Key File==== If there is a problem with starting apache when the computer is booted, remove passphrase from the key file can be used to solve it. -Make backup file first <pre> $ cp server.key server.key.original </pre> -Remove the encryption from the RSA private key. <pre> $ openssl rsa -in server.key.original -out server.key </pre> -Make sure the server.key file is only readable by root: <pre> $ chmod 400 server.key </pre> ====Create the CSR==== -To create the CSR, run the following command at a terminal prompt: $ openssl req -new -key server.key -out server.csr Enter pass phrase for server.key:'''your passphrase''' You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter '.', the field will be left blank. ----- Country Name (2 letter code) [AU]:'''Country''' State or Province Name (full name) [Some-State]:'''State''' Locality Name (eg, city) []:'''City''' Organization Name (eg, company) [Internet Widgits Pty Ltd]:'''Company or Organisation Name''' Organizational Unit Name (eg, section) []:'''Section''' Common Name (eg, YOUR name) []:'''your-domain.com''' Email Address []:'''email@address''' Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []:'''(e.g. a74mf94ns62kjdf8e)''' An optional company name []: -To see the details of this CSR <pre> $ openssl req -noout -text -in server.csr </pre> ===Creating a Self-Signed Certificate=== -To create the self-signed certificate, run the following command at a terminal prompt: $ openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt Signature ok subject=/C=**/ST=***/L=******/O=**********/OU=******/CN=*********/emailAddress=*********** Getting Private key Enter pass phrase for server.key:'''your passphrase''' -To see the details of this certificate <pre> $ openssl x509 -noout -text -in server.crt </pre> ===Installing the Certificate=== <pre> $ sudo cp server.crt /etc/ssl/certs/ $ sudo cp server.key /etc/ssl/private/ </pre> ===Enable Module SSL=== <pre> $ sudo a2enmod ssl Module ssl installed; run /etc/init.d/apache2 force-reload to enable. </pre> <pre> $ sudo /etc/init.d/apache2 force-reload * Reloading web server config apache2 [ OK ] </pre> ===Edit Site Enabled=== -Add the following in the VirtualHost section under the DocumentRoot <pre> SSLEngine on SSLOptions +StrictRequire SSLCertificateFile /etc/ssl/certs/server.crt SSLCertificateKeyFile /etc/ssl/private/server.key </pre> So it should look like: <pre> <VirtualHost *> ServerAdmin blade2@localhost SSLEngine on SSLOptions +StrictRequire SSLCertificateFile /etc/ssl/certs/server.crt SSLCertificateKeyFile /etc/ssl/private/server.key ...blah blah </VirtualHost> </pre> -Restart the Apache server $ sudo /etc/init.d/apache2 restart * Restarting web server apache2Apache/2.2.8 mod_ssl/2.2.8 (Pass Phrase Dialog) Some of your private key files are encrypted for security reasons. In order to read them you have to provide the pass phrases. Server blade2-home:443 (RSA) Enter pass phrase: '''type your passphrase''' OK: Pass Phrase Dialog successful. ===Reference=== https://help.ubuntu.com/8.04/serverguide/C/certificates-and-security.html http://httpd.apache.org/docs/2.2/ssl/ssl_faq.html http://httpd.apache.org/docs/2.2/ssl/ssl_howto.html http://www.apache-ssl.org/ http://www.apache-ssl.org/httpd.conf.example http://httpd.apache.org/docs/2.2/mod/mod_ssl.html http://en.wikipedia.org/wiki/Https

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