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Our server has been probably hacked

Our server is highy instable in the past 2 weeks, I run YaST to update all packages, and also start chkrootkit

chkrootkit (Check Rootkit) is a common unix-based program intended to help system administrators check their system for known rootkits. It is a shell script using common UNIX/Linux tools like the strings and grep commands to search core system programs for signatures and for comparing a traversal of the /proc filesystem with the output of the ps (process status) command to look for discrepancies.

chkrootkit report that WE have a problem:

Checking `bindshell'... INFECTED (PORTS:  465)

Read more: Our server has been probably hacked

Category: incidents on my Homepage

Stability of my Site

2005.11.04 My site is currently creating 60 request / second to the hosting mysql company

So my site has been deactivated yesterday and today. It has been reactivated today 04.11.2005 at 10:00 GMT+1 in order to let me do some actions

I am currently working on it...
* I have supress the redirect (index.html) to /Mambo/index.php
* I have moved Joomla from /Mambo to the root of {www.waltercedric.com}
* I have empty all content cache of Joomla
* I have modified the .htaccess accordingly (rewrite from /Mambo to /)
* I have suppres all 15500 known rewriting URL from {SEF404} database!
Together with the Company {www.cineteck-fr.com} (monitoring).
Next status from Cineteck at 18:00 GMT+1, if it is still catastrophic, I will slowly deactivated Joomla Components/Modules/Mambots in the hope to localize the problem.
If everything goes well, You will be able to read me tonight and tomorrow, if not the site will be switch off as it overcharge the hosting company.


Category: incidents on my Homepage

Site down 01-02-2006

01 February 2006

My site has been put offline because of the workload it put on my provider infrastructure...

It seems that the {SEO/SEF} engine (www.open-sef.org) combined with the number of visitors (1300 daily), hits (1.8M monthly), bandwidth (11 to 16Gb monthly) stress the mySQL server too much. My site also run on a machine where there is already 90 others clients. My recent popularity is related to the open source development I am doing for Joomla (7 GPL projects hosted at {www.joomla.org}):

* com_akobookPlus Modified version of the great akobook from arthur konze, This version now protect JOOMLA Guestbook entry from spammers using: - com_security (captcha), - com_hashcash (crypto hashkey), - com_bayesianNaiveFilter (learning filters) all these methods can be defeat through...using advanced techniques

* com_akocommentPlus Modified version of the great akocomment from arthur konze, This version now protect JOOMLA comments from spammers using: - com_security (captcha), - com_hashcash (crypto hashkey), - com_bayesianNaiveFilter (learning filters) all these methods can be defeat through...using advanced techniques

* com_bayesianSpamFiltering A spam filter that evaluates email message content to determine the probability that it is spam. Bayesian filters are adaptable and can learn to identify new patterns of spam by analyzing incoming email.. Instead of identifying subject line or headers of the email, Bayesian filter will review the content of the email to prevent or block spamming. Bayesian filtering is the process of using Bayesian statistical methods to classify documents into categories.

* com_hashcash Hashcash technology for Joomla Forcing the spammer to pay the price (computing power) before submitting rubish to Your homepage (comments, guestbook for example). The user will have to create a new cryptographic value of a hidden field (Javascript code provided) and that may take 1 to 2 seconds, but may be more with RSA 1024.... This also do not allow robot to easily submit code without parsing Your HTML page before... Hashcash definition: A sender of non-spam posting attached a hidden field from his post which proves that he has invested a modest amount of computer time into solving a small puzzle, often involving the recipient's email address. The receiver can, at negligible computational cost, verify that a sender had solved the puzzle. This can be regarded as a form of numerical stamp, where the 'cash' part is the effort invested by the sender. The theory is that spammers, whose business model relies on their ability to send large numbers of emails with very little cost per message, cannot afford this investment into each individual piece of spam they send. Receivers can verify whether a sender made such an investment and use the results to help filter email.

* com_Log4php Consistent and quality logging at a glance for JOOMLA Log4php is a php port of Log4j, the most popular Java logging framework (see Log4J for details). It has been packed for Joomla by me. Home of Log4PHP at Apache.logging * Configuration through xml and properties file (same structure as log4j). * File, RollingFile, DailyFile, Echo, Console, Mail, PEAR::Db, PHP error, Syslog or NT events and Socket appenders. * Simple, TTCC, Pattern, Html and Xml Layouts. * Nested (NDC) and Mapped (MDC) Diagnostic Contexts. * Switchable internal debug.

* com_securityimages Security Images or CAPTCHA for Joomla Ever been to a site where you had to register and the registration form required that you type in the same phrase that is found in a hard-to-read image? Joomla has now this possibility thanks to my component com_securityimages. CAPTCHA definition: A captcha (an acronym for "completely automated public Turing test to tell computers and humans apart") is a type of challenge-response test used in computing to determine whether or not the user is human. The term was coined in 2000 by Luis von Ahn, Manuel Blum, and Nicholas J. Hopper of Carnegie Mellon University, and John Langford of IBM. A common type of captcha requires that the user type the letters of a distorted and/or obscured sequence of letters or digits that appears on the screen.

* com_joomlacloud Tag Cloud technology for Joomla A tag cloud (more traditionally known as a weighted list in the field of visual design) is a visual depiction of content tags used on a website. Often, more frequently used tags are depicted in a larger font or otherwise emphasized, while the displayed order is generally alphabetical. Thus both finding a tag by alphabet and by popularity is possible. Selecting a single tag within a tag cloud will generally lead to a collection of items that are associated with that tag.

* And the number of pages known: {59900 sites} [Google] - {15200 sites} [Altavista],
* The list of referer {HERE,} with some prestigious like www.xboxmediacenter.com
* My Google Ranking: 5/10 which is huge for a personal page.
* Domain: www.waltercedric.com is reserved till 2015

Basically, I will have to go from a mutualised Server web hosting (45€/yearly) to a Dedicated Server web hosting (159€/monthly)

Months Unique visitors Visites Pages Hits Bandwidth
Jan 2006 25391 32363 123894 1861073 10.70 Gb

{detailled statistics available here}, statistics from 2005 available

If You want to
* Sponsor me and take some of the costs of hosting, I will look carefully at all offers,
* Have ideas on how to resolve this issue,
* Have experience something similar,

I stay in touch with my current provider : {www.cineteck-fr.com} and will hopefully have more info soon. Please come back soon. Thanks for your patience.


Category: incidents on my Homepage

Site down 10-02-2006 but revival soon

10 February 2006
First I wish to Thanks all persons that have proposed me solutions to my problem (in no particular order):

Hosting
I will be hosting my new homepage at www.strato.de  along with the THE xDreamTeam BUT All of You will have a "free banner and links" for 1 years on my new site, and my support,  in order to thanks You all !!!

Templates

  • Colin (Canada) from www.coffeecrew.com has offered me to do a new templates, so the previous orange templates will disappear during the migration to the new server.
Load
  • While I can not reduce the number of visitors, I will contact developer of www.open-sef.org and will help them in their development (temporary I have too many things to do) and optimize the speed of their SEO/SEF engine (probably serializing rules in htaccess)....
Deadline
  • Server MR2 has been ordered, hope to be online end of next week
News
  • Securityimages will be ready in 3.0.0 just after the migration
  • Joomlacloud will be ready in 1.0.X just after the migration
  • I will also make a new release of akocomment
I wish also to thanks all other persons, from the Joomla community, who sent me emails,. Thanks it was also reconforting :-)
Category: incidents on my Homepage

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