Php - Prevent Users From Being Able To Access A Webpage Via Web Browser?
Apr 18, 2010
This program is going to submit GET data to our webpage. However, we don't want users accessing the webpage any other way than the program. We can prevent users from sharing the program using HWID authentication, but nothing prevents them from using a packet scanner to get the URL of the webpage. We thought about user-agent authentication, which we will implement, but user-agents can easily be spoofed.
how can we prevent users from accessing the webpage directly, instead of through the program?
Currently we will be implementing:
HWID Authentication to use the program User-Agent Authentication to access the web page Instant IP Blacklisting to anyone accessing the webpage without the proper User-Agent
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Apr 26, 2009
I tried the following code but it did not work.
Private Sub PasswordDataGridView_UserDeletingRow(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewRowCancelEventArgs) Handles PasswordDataGridView.UserDeletingRow
[Code]....
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Feb 7, 2010
how do I prevent my users for more than one simultaneous login per account. I am using Vb.Net SQL.
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Mar 26, 2009
The app uses several forms to let the user enter information. In each form the info is entered into textboxes and dealt with elsewhere when the "Enter" button is clicked. A lot if the info entered is used in calculations and so must not contain alpha characters, only numbers. What is the best way of examining each entry and identifying any that are not numbers, so that I can ask the user for a correction with a MsgBox?Prevent Users Entering Letters Instead of Numbers?
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Dec 20, 2010
I have a project that uses a number of DataGridView controls. Most of the cells are of the DataGridViewTextBoxCell persuasion. I declare my controls like so:Dim MyCell as DataGridViewCell Later I specify whether they are DataGridViewTextBoxControls or DataGridViewComboBoxCells like so:
MyCell = New DataGridViewTextBoxCell MyCell = New DataGridViewComboBoxCell None of the places in my code require the ability for the users to enter their own values in the Combo Boxes. That is, they are either hard-coded or the values are gathered from other data within the application.
Currently, users can highlight a combo box control defined as shown above and begin typing anything they like. For example, I have one combo box that offers the user a selection of integers between 1 and 9. I can highlight the combo box cell and enter "Hello, World!" if I'd like.What does it take to disable this ability? I'm sure there's a property, but I have yet to find it. I have searched the Internet, and have found only the ability to have user-entered values added to the list and a stream of data-binding tutorials.
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Mar 16, 2011
I have built a vb.net web application. I have tried to make it secure, with all users requiring a password to get in. The only problem is that if anyone can guess (or detect using some kind of hacking tools) the url of the javascript file, they can download it and read it, without even having to log in first.
Is there any way that this can be prevented?
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May 27, 2011
I have been searching a lot online but couldn't find a solution for my problem. I want it to refresh every certain interval of time without this message to display. Now Ican't minimize my program because I'm putting an automatic Sendkeys.send("{Enter}") after the refresh to get rid of that message by clicking on "Retry".And If I minimize it the Enter will be executed on the active Window, which might be any other Window.
I hope that you understand what I mean, If not, I will clarify more.
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Jul 15, 2011
I have written a program in VB 2010 that dumps documentation info into an Excel file. Basically, the Excel file is a log file that keeps track of revisions for design drawings at an engineering firm.
There are approximately 20 people that have access to this program. However, I've run into issues where multiple users may be using the program and trying to send info to the Excel file at the same time. The Excel file is set to read only. My program opens the file with write access, and dumps the info into the appropriate cells, then closes the file. If one person is in the process of using the program, it causes an error with another persons system if they try to use it at the same time.
In some cases, it causes my program to crash, and it leaves the Excel file open on someones system.
Typically, my program would only have the Excel file open for a couple seconds. So, the issues mentioned above are rare, but they do happen.
I'm looking for ideas to prevent this issue from occuring.
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May 19, 2010
I am making a webbrowser,how to prevent my browser from opening new IE windows. Because what happens is, there are some links that will open new windows and therefore IE comes in place because it is set as default windows browser which I really don't want because my browser looks really bad if it opens links in another webbrowser.I want it to be just a basic browser, it has only one window, and it should navigate within that window. This is because the browser is integrated in a bigger application only for some website applications that are related to this main application.I am using VB.net 2008 Express Edition?
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Apr 14, 2012
I have a windows form that have 5 webbrowser control. I also have serveral links of URLs and each webbrowser will open them. My problem is that after all links already opened, when I close my windows forms, sometimes my application suddenly open my default browser automatically and open url that on my URL list. I already tried to make all webbrowser to navigate to "about:blank"to make sure there are not loading any webpage before I close my application but the problem is still occur. This has given me a headache since this problem is not always occur when I close my application.
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Jan 31, 2010
How can i display the url of a webpage in my browser.
Me.TextBox1.Text = WebBrowser1.Url.ToString
but when i try to change my web adress in the adress bar it aataches the name to the url i am alredy in..
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Mar 24, 2012
I'm trying to have my web browser simulate the reloading of the webpage without having to refresh the page. For example, if a user loads a web page, then they lose internet connection and they want to refresh the page they could just click a button to reload all the contents of the webpage including scripts to their original settings.
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Feb 7, 2010
Also want it to load in the users default web browser if possible. I'm working on a little app for a small community online radio station and want to have a menu in the menu strip for the stations website, twitter profile and facebook profile. I'm new to VB and haven't figured out what I need to input for the click settings.
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Aug 29, 2009
How do i get my visual basic browser to remember my username on a webpage , so when i access that site my username will be saved ?
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Aug 16, 2010
Well,i need a code so when a new tab opens on my default webbrowser(firefox) to surf to the link and then hide the page,but it should be still open,but hidden the code i used is system.diagnostics.process.start(url...)but it only opens the link
If not possible to do this on default web browser,then i need a code for a tabbed erbbrowser i made on vb 2008 at a tabcontrol
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Sep 11, 2009
I am trying to load a webpage into a web browser control that has a login form on it. What I am wondering is how I would go about changing the username/password input values on that page thru program code. The html element ids are "username" and "password" respectively. I am using vb 2008. I have tried searching but am getting mixed results with asp.net which is not what I want.
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Jul 7, 2011
I want my users to be able to click a button to open my company's webpage in the default browser when clicked.I'm using VB.net so all .net examples are acceptable.
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Jul 30, 2009
I trying to make a Web-based application (browser). And when a word comes up, a MsgBox should appear, where it says ("We found your text") or something.[code]...
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Nov 5, 2010
I have this problem, I can create a setup for my app/database but everyone can open the backend file which is an MS Access database. I want it so we can only access the database using the frontend app.
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May 4, 2011
I have created a scrabble game that generates random letters. For the user to type in a word using the random letters they have to type it in a text box.
I want my program to prevent users from typing in letters that are not provided in the text box and to allow them to type in the random letters that are provided.
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Feb 9, 2007
i have a webserver control in my application.i load the web browser control on a button click using the below code
Private Sub Button1_Click(ByVal sender
As System.Object,
ByVal e As System.EventArgs)
[code]......
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Sep 28, 2010
I can create them using Ctrl+T(webbrowser controls and all) but after that I don't have any idea on how to control them(let's say I select the 5 tab and I don't know how to make that web browser control to navigate to a given webpage). I was thinking of creating an array of webbrowsers but I don;t know how that works.
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May 21, 2010
My problem is that when i try to insert a GridView in ASP.NET webpage it doesn't appear in the Browser.
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Feb 22, 2009
I want to search for a particular string in web page loaded in web browser..
webpagecontent1 = WebBrowser1.DocumentText.ToString
dim strer() as string= {"Hell,"Heaven","Good"}
For Each i As String In strer
[Code]....
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Jan 26, 2010
I tried several samples on the forums I can not get it to click.
For Each element As HtmlElement In WebBrowser1.Document.Links[code]...
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Apr 19, 2009
I'm currently working on my personal html editor. i have it where i can preview the page in a webbrowser. on maximized screen i can see the entire page as is. is it possible to keep the webbapage viewed, as viewed maximizied, in a resized browser with this size: 201, 106.
i know i won't be able to read much of the text, i just want to see the page preview, image location, etc. just a browser with view zoom properties.
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Dec 7, 2010
1.Firstly i am using a web browser control and i wish to get the URL of the current page and write it to a text box and to a text file.
2.I would also like to read the text file back and make some sort of bookmarking menu but dont really know where to start.
3.Is it possible to shrink the text size on a webpage through the browser control some sites the text looks huge.
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May 17, 2011
The actual problem is when I go to a web page and click an internal link or use the back or forward button it only shows whatever the last webpage I keyed in and not the actual page I'm on.
Public Class Form1
Private Sub Panel1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs)
[code].....
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Dec 17, 2010
I have WebBrowser1 and this code on a button: WebBrowser1.Navigate(URLBox.Text) That all works fine and I can enter text and go to the webpage. How do I:
1. Check for when the page has finished loading?
2. Auto populate 2 fields on the webpage and click login?
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Dec 3, 2009
I have some values in the registry to set the user name, I also have a web browser, How would i make the web browser auto fill in the user name field in the web page window on load?
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