how to prevent xss attacks

Functionstrinput ($ input) {$ inputstrval ($ input); $ replacearray (union, load, and, or, select, update, insert, delete, create, char, ascII, ord, conv, --, #, *, %, _, \, function strinput ($ input) { $ Input = strval ($ input ); $ Replace = array ('Union ', 'load', 'and', 'or', 'select', 'update', 'insert', 'delete ', 'create', 'Char ', 'ascii', 'ord ', 'conv',' = ',' -- ',' # ',' * ',' % ', '_','\\','\'',"\""); $ Input = str_ireplace ($ replace, "0", $ input ); Return $ input; } Define a f

If the cookie is set with the HTTPONLY flag, you can avoid javascript from reading cookies when XSS occurs, which is why HttpOnly was introduced.Implementation method:Settings in PHP1. In the php.iniSession.cookie_httponly = True2. Global settings in the program:Ini_set ("Session.cookie_httponly", 1);OrSession_set_cookie_params (0, NULL, NULL, NULL, TRUE);?>The 3.Cookie operator function Setcookie function and the Setrawcookie function are also specif

cause different damages, which is mainly determined by the security permissions of the application to access the database. If the user's account has administrator or other advanced permissions, attackers may perform various operations on the database table, including adding, deleting, or updating data, you may even directly Delete the table. 2. How to prevent such attacks? Fortunately, Asp. it is not parti

is obvious. With the development of computer and network technology, the computer's processing ability grows rapidly, the memory increases greatly, at the same time also has the Gigabit level network, this makes the DoS attack's difficulty degree to be increased, the target has strengthened many to the malicious attack packet digestion ability. This is when distributed denial of service (DDoS) attacks have emerged. DDoS is the use of more puppet mach

security permissions of the application to access the database. If the user's account has administrator or other advanced permissions, attackers may perform various operations on the database table, including adding, deleting, or updating data, you may even directly Delete the table. 2. How to prevent such attacks? Fortunately, Asp. it is not particularly difficult for a net application to be intruded

[Original address] Tip/Trick: Guard Against SQL Injection Attacks[Original article publication date] Saturday, September 30,200 6 AM SQL injection attacks are a very annoying security vulnerability. All web developers, No matter what platform, technology, or data layer, need to be sure what they understand and prevent. Unfortunately, developers tend to spend less

function Strinput ($input) { $input =strval ($input); $replace =array (' Union ', ' load ', ' and ', ' or ', ' select ', ' Update ', ' Insert ', ' delete ', ' create ', ' char ', ' AscII ', ' ord ', ' Conv ', ' = ', '--', ' # ', ' * ', '% ', ' _ ', ' \ \ ', ' \ ', ' \ ' "; $input =str_ireplace ($replace, "0", $input); return $input; } Define a filter function that passes through the string data for all GPC. Does this completely prevent MySQL injectio

Comments: A DDoS attack uses a group of controlled machines to initiate an attack on a single machine. Such a rapid attack is hard to guard against, so it is highly destructive. If the network administrator can filter IP addresses Against Dos in the past, there is no way to face the current DDoS many spoofed addresses. Therefore, it is more difficult to prevent DDoS attacks. How can we take effective measur

always been a leader in layer-3 and multi-layer exchange technologies. It provides users with powerful bandwidth and speed while also providing a complete set of network management tools, in particular, Extreme Ware provides effective identification mechanisms and strong control measures for the most difficult-to-solve traffic-type DoS attacks. Combining the most advanced layer-3 switching technology with a multi-layer security defense system is the

This article describes in detail how to prevent network paralysis and how to prevent router attacks and set security vulnerabilities? The following article will give you a detailed answer. It is usually easier for hackers to launch attacks by exploiting vro vulnerabilities. Vro att