Url Referer

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5.00/5 (1 vote)

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Hi all,

I have a web based application developed in .net 3.5 with c#.

In my application I'm trying to not to allow the anonymous users from the tampering the url, so I'm using the following code.

HTML

if(Session["empid"]==null || Session["empid"]!=null)
{
if(Request.UrlReferrer==null)
{
//redirect to some page
}
}

I have placed the above code in the page_init of masterpage.
When the user comes without loggin in it works perfectly, when the user logs in and if clicks on some hyperlink in a page again the user is being logged out.

Is there any alternative to this problem?

Posted 28-Oct-10 0:17am

bgadarsh

Updated 28-Oct-10 3:53am

Dalek Dave

v2

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Dalek Dave 28-Oct-10 9:53am

Edited for Grammar and Syntax.

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RECSEN · Answer 1 · 2010-10-28T00:31:00

Place this config into webconfig file it will help you to protect from anonymous users

Path ="admin" is a folder of web form

XML

<location path="admin">
    <system.web>
      <authorization>
        <allow roles="admin"/>
        <deny users="*"/>
      </authorization>
    </system.web>

Hiren solanki · Answer 2 · 2010-10-28T00:44:00

I cannot understand completely what you are trying to convey.

But I have some advise for your code.

if(Session["empid"]==null || Session["empid"]!=null)

You have written code for If it is NULL or Not NULL then why there is need to specify condition if you want to pass in any of criteria.

if(Request.UrlReferrer==null)

Value of UrlReferrer is the string of the URL from which the current page is redirected.

So If it is null then It must be the initial request.

So your code will run in the case if it is first request.

If you got some points then investigate your code further, and if not succeed then put your code snippets which is running undesirably.

Please vote and Accept Answer if it Helped.

bgadarsh · Answer 3 · 2010-10-28T03:46:00

SQL

Basically when we use Request.UrlReferrer and the user tampers in the address bar the page can be sent to a custom page.

but when the same code is used when clicking on a hyperlink the Request.urlreferer is becoming null and teh page is moved to the custom page again.

how to restrict this.

Url Referer

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