Apache2 is already installed when you choose the LAMP server on Ubuntu installation.
 
 Addition necessary apache modules:
libapache2-mod-chrootlibapache2-mod-geoiplibapache2-mod-rpaflibapache2-mod-evasivegrep www-data /etc/passwd >>/usr/local/chroot.web/etc/passwd grep www-data /etc/group >>/usr/local/chroot.web/etc/group
/etc/apache2/apache2.conf 
ChrootDir /var/www
Timeout 20
KeepAliveTimeout 4
<IfModule mpm_prefork_module>
    StartServers         40
    MinSpareServers      40
    MaxSpareServers      80
    MaxClients          160
    MaxRequestsPerChild   5000
</IfModule>
DefaultType text/html
LogFormat "%v %h %l %u %t \"%r %P %T\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined_virtual
ServerTokens Prod
ServerSignature Off
 /etc/apache2/envvars 
export APACHE_PID_FILE=/var/run/apache2/apache2.pid export LANG=hu_HU.UTF-8 export LC_ALL=hu_HU.UTF-8
/etc/apache2/ports.conf 
Listen 127.0.0.1:80 Listen 127.0.0.1:443
/etc/apache2/httpd.conf 
ServerAdmin webmaster@server_name
<Directory />
    Options FollowSymLinks
    AllowOverride None
</Directory>
CustomLog /var/log/apache2/access.log combined_virtual
LimitInternalRecursion 4
# ModSecurity: SecDataDir not allowed in VirtualHost.
SecDataDir /sec_data
SetEnvIf Request_URI \.jpg nolog-request
SetEnvIf Request_URI \.jpeg nolog-request
SetEnvIf Request_URI \.gif nolog-request
SetEnvIf Request_URI \.png nolog-request
SetEnvIf Request_URI \.css nolog-request
SetEnvIf Request_URI \.js nolog-request
/etc/apache2/conf.d/charset 
AddDefaultCharset UTF-8
 
 /etc/apache2/mods-enabled
auth_basicauthz_defaultauthz_hostdirgeoipmimemod_chrootmod-security2php5rewriterpafsetenvifunique_id
 /etc/apache2/mods-enabled/mime 
#AddType application/x-compress .Z #AddType application/x-gzip .gz .tgz #AddType application/x-bzip2 .bz2 #AddLanguage ca .ca #AddLanguage cs .cz .cs #AddLanguage da .dk #AddLanguage de .de #AddLanguage el .el AddLanguage en .en #AddLanguage eo .eo #AddLanguage es .es #AddLanguage et .et #AddLanguage fr .fr #AddLanguage he .he #AddLanguage hr .hr #AddLanguage it .it #AddLanguage ja .ja #AddLanguage ko .ko #AddLanguage ltz .ltz #AddLanguage nl .nl #AddLanguage nn .nn #AddLanguage no .no #AddLanguage pl .po #AddLanguage pt .pt #AddLanguage pt-BR .pt-br #AddLanguage ru .ru #AddLanguage sv .sv #AddLanguage zh-CN .zh-cn #AddLanguage zh-TW .zh-tw #AddCharset us-ascii .ascii .us-ascii #AddCharset ISO-8859-1 .iso8859-1 .latin1 AddCharset ISO-8859-2 .iso8859-2 .latin2 .cen #AddCharset ISO-8859-3 .iso8859-3 .latin3 #AddCharset ISO-8859-4 .iso8859-4 .latin4 #AddCharset ISO-8859-5 .iso8859-5 .cyr .iso-ru #AddCharset ISO-8859-6 .iso8859-6 .arb .arabic #AddCharset ISO-8859-7 .iso8859-7 .grk .greek #AddCharset ISO-8859-8 .iso8859-8 .heb .hebrew #AddCharset ISO-8859-9 .iso8859-9 .latin5 .trk #AddCharset ISO-8859-10 .iso8859-10 .latin6 #AddCharset ISO-8859-13 .iso8859-13 #AddCharset ISO-8859-14 .iso8859-14 .latin8 #AddCharset ISO-8859-15 .iso8859-15 .latin9 #AddCharset ISO-8859-16 .iso8859-16 .latin10 #AddCharset ISO-2022-JP .iso2022-jp .jis #AddCharset ISO-2022-KR .iso2022-kr .kis #AddCharset ISO-2022-CN .iso2022-cn .cis #AddCharset Big5 .Big5 .big5 .b5 #AddCharset cn-Big5 .cn-big5 #AddCharset WINDOWS-1251 .cp-1251 .win-1251 #AddCharset CP866 .cp866 #AddCharset KOI8 .koi8 #AddCharset KOI8-E .koi8-e #AddCharset KOI8-r .koi8-r .koi8-ru #AddCharset KOI8-U .koi8-u #AddCharset KOI8-ru .koi8-uk .ua #AddCharset ISO-10646-UCS-2 .ucs2 #AddCharset ISO-10646-UCS-4 .ucs4 #AddCharset UTF-7 .utf7 AddCharset UTF-8 .utf8 #AddCharset UTF-16 .utf16 #AddCharset UTF-16BE .utf16be #AddCharset UTF-16LE .utf16le #AddCharset UTF-32 .utf32 #AddCharset UTF-32BE .utf32be #AddCharset UTF-32LE .utf32le #AddCharset euc-cn .euc-cn #AddCharset euc-gb .euc-gb #AddCharset euc-jp .euc-jp #AddCharset euc-kr .euc-kr #AddCharset EUC-TW .euc-tw #AddCharset gb2312 .gb2312 .gb #AddCharset iso-10646-ucs-2 .ucs-2 .iso-10646-ucs-2 #AddCharset iso-10646-ucs-4 .ucs-4 .iso-10646-ucs-4 #AddCharset shift_jis .shift_jis .sjis #AddHandler type-map var #AddType text/html .shtml #AddOutputFilter INCLUDES .shtml
/etc/apache2/mods-enabled/php5.conf 
<IfModule mod_php5.c> AddType application/x-httpd-php .php </IfModule>
touch /var/www/var/log/php.log /var/www/var/log/php_ssl.log chown www-data:www-data /var/www/var/log/php.log /var/www/var/log/php_ssl.log ln -s /var/www/var/run/apache2/apache2.pid /var/run/apache2/apache2.pid ln -s /var/www/usr/share/GeoIP/GeoIP.dat /usr/share/GeoIP/GeoIP.dat ln -s /var/www/var/DocRoot/ /var/DocRoot
/etc/apache2/sites-available/default: 
NameVirtualHost 127.0.0.1:80
<VirtualHost 127.0.0.1:80>
    DocumentRoot /var/DocRoot/localhost
    DirectoryIndex index.html index.php
    CustomLog /var/log/apache2/access.log combined_virtual
    ErrorLog /var/log/apache2/error.log
    Include /etc/apache2/modsecurity/*.conf
    php_admin_value open_basedir /var/DocRoot/localhost/
</VirtualHost>
/etc/apache2/sites-available/default_ssl: 
NameVirtualHost 127.0.0.1:443
<VirtualHost 127.0.0.1:443>
    DocumentRoot /var/DocRoot/localhost
    DirectoryIndex index.html index.php
    CustomLog /var/log/apache2/ssl.log combined_virtual
    ErrorLog /var/log/apache2/ssl_error.log
    <FilesMatch "^.*(|.php|.html|.htm)$">
        GeoIPEnable On
        GeoIPDBFile /usr/share/GeoIP/GeoIP.dat
        GeoIPOutput Env
        SetEnvIf GEOIP_COUNTRY_CODE HU OK_Country
        Order Deny,Allow
        Deny from all
        Allow from env=OK_Country
    </FilesMatch>
    php_admin_value open_basedir /var/DocRoot/localhost/
    php_value error_log /var/log/ssl_php.log
</VirtualHost>
You need some links from /etc/apache2/sites-available to /etc/apache2/sites-enabled.
 
ln -s /etc/apache2/sites-available/default /etc/apache2/sites-enabled/000-default ln -s /etc/apache2/sites-available/default_ssl /etc/apache2/sites-enabled/000-default_ssl
/usr/sbin/apache2ctl 
mkdir -p /var/run/apache2 ln -f -s /var/www/var/run/apache2/apache2.pid /var/run/apache2/apache2.pid
 http://httpd.apache.org/
 https://help.ubuntu.com/8.04/serverguide/C/httpd.html
