Linux Tutorials on the topic “centos”

  • Integrating XCache Into PHP5 (Fedora 8/CentOS 5.1 & Apache2)

    Author: falkoTags: , , , Comments: 0

    Integrating XCache Into PHP5 (Fedora 8/CentOS 5.1 & Apache2) This guide explains how to integrate XCache into PHP5 on a Fedora 8 or CentOS 5.1 system (with Apache2). From the XCache project page: "XCache is a fast, stable PHP opcode cacher that has been tested and is now running on production servers under high load." It's similar to other PHP opcode cachers, such as eAccelerator and APC.

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  • How to add two-factor authentication to Google Apps for your Domain using open source software

    Author: nowenTags: , , , Comments: 2

    How to add two-factor authentication to Google Apps for your Domain using open source software Everybody loves GMail. With Google Apps for you Domain, you can use GMail with your own domain, allowing organizations to outsource their email - and the requisite anti-spam filtering to Google. Webmail is very convenient, but for frequent travellers and those who use public wifi, it can be quite dangerous. Logging in from a kiosk or shared computer is a sure way to get your username and password stolen by a keystroke logger. Using a public WiFi system can lead to a man-in-the-middle attack. In this document we will take advantage of two open source projects to add two-factor authentication to Google Apps. The first is Gheimdall, a a TurboGears project for Google Apps SSO service. Gheimdall supports PAM and LDAP authentication natively. It also includes sample code to add new authentication methods, which made it very easy to add two-factor authentication from WiKID. WiKID is a dual-source two-factor authentication solution that uses public key cryptography to strongly authenticate users.

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  • Monitoring With Groundwork Open Source On CentOS 5.1

    Author: shakey_1Tags: , Comments: 4

    Monitoring With Groundwork Open Source On CentOS 5.1 Nagios is (in my opinion) one of the finest availability and monitoring solutions available. The stability, extendability and cost effectiveness (it is free under the GPL), are second to none (again, my opinion). That being said, it is far from being the easiest monitoring solution to implement. The build process itself, while not being overly complicated, can be vexing to new Linux users. That doesn't even include the configuration, which sometimes still makes me cringe.

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  • Zimbra Collaboration Suite Open Source Edition On CentOS

    Author: christensen143Tags: , , Comments: 10

    Zimbra Collaboration Suite Open Source Edition On CentOS This tutorial shows how to set up Zimbra Collaboration Suite - Open Source Edition on CentOS. This tutorial covers installation of CentOS, dependencies for ZCS and setup of Split DNS when working behind a firewall. This tutorial is based on the way I set this server up and is only a suggestion. It carries no guarantees and it is highly suggested that you do this on a test server first to verify functionality. If you don't have a test server available you should download VMWare Server 1.0 and perform this tutorial on a test virtual server.

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  • Virtual Users And Domains With Postfix, MailScanner, Mailwatch & MySQL On CentOS 5.1

    Author: o.meyerTags: , , , Comments: 0

    Virtual Users And Domains With Postfix, MailScanner, Mailwatch & MySQL On CentOS 5.1 This document describes how to customize Falko's "Virtual Users And Domains" - setup for CentOS 5.1 so that it works with MailScanner and Mailwatch. The resulting system provides a web interface (Mailwatch) where you can manage quarantined emails, train SpamAssassin, edit the white- and blacklist, view configuration files and the detailed MySQL database status ...

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  • How To Implement Domainkeys In Postfix Using dk-milter

    Author: topdogTags: , , Comments: 8

    How To Implement Domainkeys In Postfix Using dk-milter Domainkeys is "DomainKeys is a method of e-mail authentication. Unlike some other methods, it offers almost end-to-end integrity from a signing to a verifying Mail Transfer Agent (MTA). In most cases the signing MTA acts on behalf of the sender, and the verifying MTA on behalf of the receiver. DomainKeys is specified in Historic RFC 4870, which is obsoleted by Standards Track RFC 4871, DomainKeys Identified Mail (DKIM) Signatures." according to the wikipedia. So why a how to on it when there is DKIM ? Well domainkeys is still actively being used and is more widely deployed than DKIM, the developer Yahoo still uses it to sign and verify mail although they are contributers to the DKIM standard.

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  • CentOS 5 - Home Gateway Firewall With DHCP Server For Connection Sharing

    Author: unclecameronTags: Comments: 9

    CentOS 5 - Home Gateway Firewall With DHCP Server For Connection Sharing If you're trying to set up a home network, you probably want to set up a permiter facing computer connected to your DSL/Cable modem, and then put all of your computers behind that firewall box to keep them safe. This tutorial will show you how to use a single external connection on the gateway computer (using Iptables firewall), and a second internal connection on the same box so you can connect the computers on the inside of your home/office to it.

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  • How To Configure ISP Mail Server With Virtual Users/Domain On Centos 4.5 Using Postfix, Dovecot, MySQL, phpMyAdmin, TLS/SSL

    Author: babarsaleemTags: , Comments: 1

    How To Configure ISP Mail Server With Virtual Users/Domain On  Centos 4.5 Using Postfix, Dovecot, MySQL, phpMyAdmin, TLS/SSL This tutorial describes how to set up a mail server where Postfix is the SMTP service, and Dovecot provides IMAP and POP services. The users are virtual and user information is stored in a MySQL database.

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  • Installation Guide: CentOS 5.1 Desktop

    Author: o.meyerTags: , Comments: 2

    Installation Guide: CentOS 5.1 Desktop This document describes how to set up a CentOS 5.1 desktop. The result is a fast, secure and extendable system that provides all you need for daily work and entertainment.

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  • Virtual Users And Domains With Postfix, Courier And MySQL (CentOS 5.1)

    apache Author: falkoTags: , , Comments: 19

    Virtual Users And Domains With Postfix, Courier And MySQL (CentOS 5.1) This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota (quota is not built into Postfix by default, I'll show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses.

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