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OpenSUSE

The Perfect Server - OpenSUSE 11.4 x86_64 [ISPConfig 3]

Post date: March 17, 2011, 12:03 Category: Installing Views: 2998 Comments
Tutorial quote: This is a detailed description about how to set up an OpenSUSE 11.4 64bit (x86_64) server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable) with PHP, CGI and SSI support, Postfix mail server with SMTP-AUTH, TLS and virtual mail users, BIND DNS server, Pureftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc.
OpenSUSE

The Perfect Server - OpenSUSE 11.2 x86_64 [ISPConfig 3]

Post date: November 22, 2009, 14:11 Category: Installing Views: 3580 Comments
Tutorial quote: This is a detailed description about how to set up an OpenSUSE 11.2 64bit (x86_64) server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable) with PHP, CGI and SSI support, Postfix mail server with SMTP-AUTH, TLS and virtual mail users, MyDNS DNS server, Pureftpd FTP server, MySQL server, Courier POP3/IMAP, Quota, Firewall, etc.
FreeBSD

Creating A DNS Cache With djbdns

Post date: May 5, 2007, 22:05 Category: Installing Views: 3751 Comments
Tutorial quote: Building a local DNS cache will speed up your internet connection since the time for the translation job (converting domain names into IP addresses) will become negligible with the assumption that the DNS cache gets the information from the parent DNS.
Unix+clones

How to scan your Linux-Distro for Root Kits

Post date: May 19, 2006, 18:05 Category: Security Views: 3218 Comments
Tutorial quote: Do you suspect that you have a compromised system ?
Check now for root kits that the intruder may have installed !!!

So... What in the hell is a root kit ???
A root kit is a collection of programs that intruders often install after they have compromised the root account of a system.
These programs will help the intruders clean up their tracks, as well as provide access back into the system.
Root kits will sometimes leave processes running so that the intruder can come back easily and without the system administrator's knowledge !

Solution....
Scripts like chkrootkit will do the job for you automatically.
Solaris

Configuring Apache

Post date: April 13, 2005, 05:04 Category: Network Views: 4121 Comments
Tutorial quote: Apache can respond to browser requests from machines on your local network (i.e. an "Intranet" Web server) or from the Internet. The installation of the Solaris OS installed and set up most of the necessary Apache files. As a result, if you want to use your system as a Web server you only need to modify one file.
Debian

Setting Up A Mail Server Using Exim4, Clamav, Dovecot, SpamAssassin On Debian

Post date: September 23, 2010, 11:09 Category: Installing Views: 2855 Comments
Tutorial quote: This howto describes one way to build a scalable, secure, full-featured mail platform. It offers virtual hosting of mailboxes in maildir format with support for quotas and server-side filtering, domain aliasing, address aliasing, address forwarding, catchall addresses. Relaying is secured with STARTTLS and SMTP-AUTH. Incoming mails are checked for viruses, spam, and checked against SPF policy and DNSBL.
Linux

Delete Qmail Server messages Queue

Post date: January 12, 2007, 18:01 Category: Software Views: 2731 Comments
Tutorial quote: qmail is a mail transfer agent that runs on Unix. It was more secure replacement for the popular Sendmail program. The author offered a $500 prize for the first person to publish a verifiable security hole in the latest version of the software.

This is a useful thing to do in a number of situations. For instance, if you are hit with a spamming attack, you can temporarily instate a second Qmail installation (once the spam run is finished), allow it to take over mail receipt,and then use this tool to clean the offending mails out of the queue before switching over to the main Qmail installation once again.
Unix+clones

Tunneling SSH over HTTP(S)

Post date: March 12, 2006, 09:03 Category: Network Views: 3401 Comments
Tutorial quote: This document explains how to set up an Apache server and SSH client to allow tunneling SSH over HTTP(S). This can be useful on restricted networks that either firewall everything except HTTP traffic (tcp/80) or require users to use a local (HTTP) proxy.
Fedora+Core

Resolving Domains Internally And Externally With Bind9 And Caching Nameserver

Post date: February 11, 2007, 19:02 Category: Network Views: 8080 Comments
Tutorial quote: Sometimes, we are required to resolve our internal domains on a local nameserver and external (internet) domains on our ISP's nameserver. There are different solutions to this problem, but in this tutorial, we are going to solve it through configuring a combination of caching-nameserver and BIND 9.
Linux

How To Block Spam Before It Enters The Server (Postfix)

Post date: June 4, 2007, 23:06 Category: Security Views: 4279 Comments
Tutorial quote: The last few weeks have seen a dramatic increase in spam (once again). Estimates say that spam makes now up for 80 - 90% of all emails, and many mail servers have difficulties in managing the additional load caused by the latest spam, and spam filters such as SpamAssassin do not recognize large parts of that spam as they did before. Fortunately, we can block a big amount of that spam at the MTA level, for example by using blacklists, running tests on the sender and recipient domains, etc. An additional benefit of doing this is that it lowers the load on the mail servers because the (resource-hungry) spamfilters have to look at less emails.
Web-based applications and online marketing solutions - LumoLink