captcha

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How to make image captcha question with asp.net

What is the best, most effective and yet easiest way of making image captcha security 开发者_如何转开发questions with ASP.net Netframework 4.0 Don\'t reinvent the wheel if you don\'t HAVE to.[详细]

2023-03-26 15:39 分类：问答
Simple Captcha Session Issue

I\'ve got a quite ridiculous problem with a captcha image and session variable. http://paholo.com/npdev/tests/contact_us2.php?add=1&confirm=new#contact[详细]

2023-03-24 21:42 分类：问答
POST[]ing Extra Values

I am creating a custom captcha where random numbers are generated and you have to add them together etc. As of right now I am echo-ing these random numbers but now I need to pull them into a external[详细]

2023-03-23 06:31 分类：问答
Implementing captcha only once for one session

I\'ve been working on a website which contains alot of links. I want to protect those links from bots/crawlers by implementing a CAPTCHA. I\'ve tried reCAPTCHA by Google but it doesn\'t suit my needs([详细]

2023-03-21 23:35 分类：问答
asp.net - Generated bitmap to img tag src

I am rolling my own captcha, since recaptcha is prooving to be a bit complex for a client\'s visitors.[详细]

2023-03-20 22:34 分类：问答
Captcha failing, now what?

Installed a 开发者_如何学Ccaptcha on my blog, been good up until now. There have recently been a bunch of legit-at-first-glance-but-actually-spam entries along with stuff like this:[详细]

2023-03-20 20:09 分类：问答
Asp.net Create a Captcha on Modal popup window of jQuery and refresh and validate it

How can I Create a Captcha control with in a Modal popup windowwhich can refresh using ajax and jquery formvalidation 开发者_JAVA百科also onthatCaptcha.[详细]

2023-03-20 17:01 分类：问答
Do I need to protect login?

I have login page. Do I need to protect it with Captcha or how should开发者_开发技巧 I handle it?[详细]

2023-03-20 07:22 分类：问答
HTTPS and Images

Besides transporting captcha imgs & copy-righted imgs, is there any other reason why one would want to 开发者_Go百科move large streams of bytes via SSL rather than regular HTTP?Preventing browsers[详细]

2023-03-20 07:08 分类：问答
captcha image in zend framework

I have the following code,but what I got is broken link ! I have installed GD library and the proper font ! but nothing work ,so how to I can use image captcha in zendframework without broken link ,wh[详细]

2023-03-18 13:03 分类：问答