Building site security

Creating any web project, you must take care of its protection. Building site security requires complex approach that takes into consideration all possible ways of potential attack and provides robust protection from all of them.

Site security building, in spite of its difficulty, can be implemented manually by programming some features using php or JavaScript. The question is that it takes huge amount of time and doesn’t provide usable interface for protection system management and monitoring. So, often developers use ready-made site security building software, that guarantees high level of protection and offers a lot of useful features.

For understanding how it works, lets consider some simple examples of site security building codes.

Serious attack represent user data input, when some user tries to enter some malicious commands that will be interpreted by a system as a script that after submission starts to execute. The simplest way of struggle against potentially dangerous user’s data input is data processing with the help of escapeshellcmd( ). This function shields all ambiguous sharacters that can cause execution of malicious system command:

When processing user input there is another problem – possible implementation of HTML tags, especially the displaying of inputted information in browser (for example, on forums). Existence of tags in displayed message can break webpage structure, distort its visual look or even intervene its downloading. A developer building site security must take into account this fact and prevent his web project from such problems. This can be realized by using simple php function strip_tags( ), that deletes all HTML tags from the inputted line. The function has the following syntax:

string strip_tags (string line [, string allowed_tags])

First parameter defines the line, from which tags must be deleted. Secon parameter is optional, it defines tags that are not deleted from the line. The sample of using strip_tags( ) function is shown below:

Ordinary developers combine various tools from different programming languages, combining them into single site code. PHP allows to insert any encoding technologies by using рореn( )or ехес( ) functions. Site security building unites facilities of all known innovations and standards, responding to rapid development of malicious attacks in cyberspace, that updates everyday by appearing new ways of breaking web security systems.

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