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| | NATS can protect some pages with CAPTCHAs, providing an additional security measure that helps to prevent against automated login attempts. | | NATS can protect some pages with CAPTCHAs, providing an additional security measure that helps to prevent against automated login attempts. |
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| − | To use the Captcha feature, insert the following somewhere between the <FORM> and </FORM tags on the desired form template:
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| − | <PRE>
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| − | <img src="{$image_url}" > //this will make the captcha image
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| − | <input type="text" name="signup[captcha:1]" value="{$vars.captcha}"> // this is where the users will type in what they see in the Captcha box
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| − | {if $errors.captcha}{$errors.captcha}{/if} //if there any errors when the users typed in what they saw in the Captcha box, this will display the errors
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| − | {if $captcha_key}<input type="hidden" name="signup[captcha_key]" value="{$captcha_key}">{/if} // if present, add the additional captcha key into the form as a hidden field
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| − | </PRE>
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| − | <HR>
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| − | A more stylized example is shown below:
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| − | <PRE>
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| − | <fieldset>
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| − | <legend>Captcha Image</legend>
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| − | <div class="form_input">
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| − | <center><img src="{$image_url}" width="150" height="45" border="0" style="padding: 3px; padding-left: 10px; padding-top: 6px"></center>
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| − | </div>
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| − | <div class="form_input">
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| − | {if $errors.captcha}<div class="join_error">{$errors.captcha}</div>{/if}
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| − | <label class="memberinfo">Verify Text:</label>
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| − | <input type="text" class="signup_input" name="signup[captcha:1]" size="35" value="{$vars.captcha}">
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| − | </div>
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| − | {if $captcha_key}
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| − | <input type="hidden" name="signup[captcha_key]" value="{$captcha_key}">
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| − | {/if}
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| − | </fieldset>
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| − | </PRE>
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| − | <HR>
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| | If your CAPTCHA image is missing from a page, ensure your server has both GD and FreeType installed, and that GD was compiled with FreeType support. Also, make sure the CAPTCHA is enabled on the template. | | If your CAPTCHA image is missing from a page, ensure your server has both GD and FreeType installed, and that GD was compiled with FreeType support. Also, make sure the CAPTCHA is enabled on the template. |
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| − | <HR>
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| | For more information on CAPTCHA images and how to add them in [[NATS4]], please see our [[NATS4 Adding a Verification Image]] wiki article. | | For more information on CAPTCHA images and how to add them in [[NATS4]], please see our [[NATS4 Adding a Verification Image]] wiki article. |
