Centrora Security Basic Firewall Explanations

Enable Stop Forum Spam Scanning

This will check if the IP address being scanned or the email address being scanned have been detected as spammers from the Stop Forum Spam website.

Block blacklisted methods (Trace / Delete / Track)

Every time a client attempts to connect to your server, it sends a message indicating the type of connection it wishes to make. There are many different types of request methods recognized by Apache. The two most common methods are GET and POST requests, which are required for “getting” and “posting” data to and from the server. In most cases, these are the only request methods required to operate a dynamic website. Allowing more request methods than are necessary increases your site’s vulnerability. Here we are blocking delete and head because they are unecessary, and also blocking trace and track because they violate the same-origin rules for clients. (Reference: Perishable Press)

Checks Malicious User Agent

Blocking hundreds of the worst bots can ensure open-access for normal traffic, major search engines (Google, Bing, et al), good browsers (Chrome, Firefox, Opera, et al), and everyone else. Blocking malicious user agent can help you avoid traffics that are known to be associated with malicious activity

Checks Basic DoS Attacks

This helps prevent your website against the HTTP Flood Attacks at the web application level. Massive crawling / scanning tools, HTTP Flood tools can be detected and blocked if it exceeds the defined thresholds / number of visits to your website in a specific time.

Checks Basic Remote File Inclusion

Remote File Inclusion (RFI) is a type of vulnerability most often found on websites. It allows an attacker to include a remote file, usually through a script on the web server. The vulnerability occurs due to the use of user-supplied input without proper validation.

Checks Basic Direct File Inclusion

Direct File Inclusion / Local File Inclusion (LFI) is similar to a Remote File Inclusion vulnerability except instead of including remote files, only local files i.e. files on the current server can be included. The vulnerability is also due to the use of user-supplied input without proper validation. (Reference: WikiPedia)

Checks Basic Javascript Injection

JavaScript injection is a nifty little technique that allows you to alter a sites contents without actually leaving the site. This can be very useful when say, you need to spoof the server by editing some form options. This includes I. Injection Basics, II. Cookie Editing and III. Form Editing

Checks Basic Database SQL Injection

SQL injection is a technique where malicious users can inject SQL commands into an SQL statement, via web page input. Injected SQL commands can alter SQL statement and compromise the security of a web application.

Detect Directory Traversal

A directory traversal (or path traversal) consists in exploiting insufficient security validation / sanitization of user-supplied input file names, so that characters representing “traverse to parent directory” are passed through to the file APIs. (Reference: WikiPedia)

Block Queries longer than 255 characters

Queries that are more than 255 characters long can use a lot of resources and slow your site down for legitimate users.  Usually queries longer than 255 characters have “eval” or “base64″ methods in it. This is very likely that the codes are looking for a way to inject script on your site that could create a backdoor, launch spam or some other malicious activity.

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New Affiliate Portal Page Released

Banner Creation

We are happy to announce that a new affiliate portal page with affiliate banner design tool is released for your convenience to promote our security products. To use the new function, just simply log in our Affiliate Page, select a subscription plan and banner size you like, and the banner codes will be generated to function in your website.

Please note that we offer 35% commission on recurring purchase base,  get your money now.

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New Subscription Packages are Released

Centrora Security Subscription Packages

To meet your diversified needs for web protection and help you manage your subscription plans, we have set up two new subscription package:

Buy one get one free sale is on going for Developer Package.


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Centrora 4.2.0 for WordPress CMS is released

Download it here: Download

4.2.0 Less Email Notifications
4.2.0 Less Email Notifications

Centrora 4.2.0 for WordPress CMS is released, here is the change log, the new version can reduce the amount of emails being sent to you when an alert is triggerred.

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Centrora Security 4.1.1 for WordPress Firewall is released

Version 4.1.1 is released, here are the change logs:

* Improved: Improve respond actions for virus scanner to hanle network error
* Improved: Added restrictions on SQL user connection for Virus scanner, so it will queue until the connection is released to avoid heavy mysql server load
* Improved: Improved language tags in the virus scanner
* Improved: Improved Development mode detection function to avoid errors for some servers

The virus scanner function has been improved in order to avoid heaving SQL server burdens when the 8 scanning threads starts at the same time. See below for a capture of how it works.

Virus Scanner in version 4.1.1
Virus Scanner in version 4.1.1

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[SQL Injection Vulnerabilities] WordPress Plugin Symposium 14.10

If your website is infected by SoakSoak malicious codes, simply subscribe a plan and activate the subscription in your website. We will help you clean the website shortly.

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This vulnerabilities has been fixed, if you are using version lower then 14.11, please update to version 14.11




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