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Master on Free Software

Systems Integration on Free Software

Enrique Ocaña González

(Block III)


Index (1/3)

● Web Server: Apache– Introduction– Install– Configuration


Index (2/3)

● Webmail: Squirrelmail– Introduction– Install– Configuration


Index (3/3)

● Web proxy: Squid– Introduction– Install– Configuration


Web server: Apache


Index

● Web Server: Apache– Introduction– Install– Configuration


Introduction

● Multi-Processing Modules (MPMs)– event, prefork, worker, itk– winnt, netware, os2...

● Dynamic Shared Objects (DSOs), APXS– Cgi– Server side scripting languages:

● perl, php, python, tcl...

– Virtual hosts, direct/reverse proxy, URL rewriting...


Install

● Packages: apache2 apache2-mpm-prefork apache2.2-common


Configuration

● Configuration: /etc/apache2– apache2.conf– httpd.conf (user configuration)

● Modules: a2enmod a2dismod● Sites: sites-available, sites-enabled


Configuration

● Global environment– Config root: ServerRoot /etc/apache– Performance: Timeout, Keepalive,

MaxKeepAliveRequests, KeepaliveTimeout, MinSpareServers, MaxSpareServers, StartServers, MaxClient, MaxRequestsPerChild

– Listen ports (ports.conf): Listen ip:port, BindAddress host

– <IfModule>: Parses config only if selected module has been loaded


Configuration

● Virtual hosts (sites-available/-enabled)– Where to listen for VHosts: NameVirtualHost– Vhost definition: <VirtualHost>

● Virtual host options– ServerName, ServerAlias– ServerAdmin– DocumentRoot


Configuration

● Virtual host directory options– <Directory>, <DirectoryMatch>– <Files>, <FilesMatch>– <Location>, <LocationMatch>– <Options>

● ExecCGI, FollowSymLinks, Indexes, SymlinksIfOwnerMatch...

– Allow/Deny from ip/host/mask(*), Order


Configuration

● Virtual host directory options– Unix process user: User, Group – Access control: AccessFileName .htaccess– UseCanonicalName– Default data types: DefaultType text/plain– Resolve hostnames to log: HostNameLookups – Log levels and files: ErrorLog, LogLevel,

LogFormat, CustomLog, ForensicLog


Configuration

● Virtual host directory options– Server version: ServerSignature,

ServerTokens – Aliases: Alias, ScriptAlias– Icons, descriptions and headers

● AddIconByEncoding, AddIconByType, AddIcon, DefaultIcon, AddDescription, ReadmeName, HeaderName, IndexIgnore


Configuration

● Virtual host directory options– Mime types and i18n: AddLanguage,

AddCharset, LanguagePriority, AddType, AddHandler

– Meta info: MetaDir, MetaSuffix– Personal error messages: ErrorDocument


Configuration

● Htaccess files for authentication– Basic (plain text password)

● Create pass/group filehtpasswd c /etc/apache2/mypass username

● Configure authenticationAuthType Basic

AuthName “By Invitation Only”

AuthUserFile /etc/apache2/mypassAuthGroupFile /etc/apache2/mygroup

Require group authors


Configuration

● Htaccess files for authentication– Digest (MD5 sum of the password)

● Create pass/group filehtdigest c /etc/apache2/mypass “By Invitation Only” username

● Configure authenticationAuthType Digest

AuthName “By Invitation Only”

AuthDigestFile /etc/apache2/mydigAuthDigestGroupFile /etc/apache2/mydiggroup

Require user john peter


Web mail: Squirrelmail


Index

● Webmail: Squirrelmail– Introduction– Install– Configuration


Introduction

● Features– Written in PHP, Lightweight– No dependencies (eg: DB), No JavaScript– MIME support– IMAP Folder manipulation– Address book– Themeable– Wide range of plugins


Install

● Packages: squirrelmail● Post-installation:

– /usr/sbin/squirrelmail-configure– Create symlink to enable virtual host:

● /etc/apache2/conf.d/squirrelmail.conf /etc/squirrelmail/apache.conf


Configuration

● Example: gmail as IMAP serverSquirrelMail Configuration : Read: config.php (1.4.0)Server Settings

General1. Domain : gmail.com2. Invert Time : false3. Sendmail or SMTP : SMTP

IMAP Settings4. IMAP Server : imap.gmail.com5. IMAP Port : 9936. Authentication type : login7. Secure IMAP (TLS) : true8. Server software : other9. Delimiter : detect

B. Update SMTP Settings : localhost:25H. Hide IMAP Server Settings


Web proxy: Squid


Index

● Web proxy: Squid– Introduction– Install– Configuration


Introduction

● Features:– Web caching proxy (http, https, ftp)– High performance– Multiplatform (Unix, NT)– Flexible Access Control List (ACL) rules– Interoperable:

● Content/antivirus filters (dansguardian, squidguard, addzaper)

● Internet Cache Protocol (ICP)


Installation

● Packages: squid (squid-common)


Configuration

● /etc/squid/squid.conf

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