04-12-2010, 01:13 PM
Note: I take no credit for the coding of this port scanner..
Credits go to David Kramer for posting it on Code Project
Ok so first off create a new Windows Application Form
You will need to add:
- TextBox X2
- ListBox X2
- Button X2
- Labels
- Timer
Add a label next to TextBox1 saying 'Host:'
And add 1 next to TextBox2 saying 'Port:'
Change the text on Button1 to 'start'
Change Button2 to 'stop'
Add a label for ListBox1 saying 'Ports being scanned:'
Add 1 for ListBox2 saying 'Open ports:'
----------------------------------------------------
Ok now for the coding...
First off declare the variables
Add the following to Form_load
Add the following to Timer_tick
Add the following to the Start button_click
Add the following to Button2_click (stop)
Hope this helps.
Credits go to David Kramer for posting it on Code Project
Ok so first off create a new Windows Application Form
You will need to add:
- TextBox X2
- ListBox X2
- Button X2
- Labels
- Timer
Add a label next to TextBox1 saying 'Host:'
And add 1 next to TextBox2 saying 'Port:'
Change the text on Button1 to 'start'
Change Button2 to 'stop'
Add a label for ListBox1 saying 'Ports being scanned:'
Add 1 for ListBox2 saying 'Open ports:'
----------------------------------------------------
Ok now for the coding...
First off declare the variables
Code:
Dim host As String
Dim port As Integer
Dim counter As IntegerAdd the following to Form_load
Code:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Button2.Enabled = False
TextBox2.Text = "0"
'set counter explained before to 0
counter = 0
End SubAdd the following to Timer_tick
Code:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
'Set the host and port and counter
counter = counter + 1 'counter is for the timer
TextBox2.Text = counter
host = TextBox1.Text
port = TextBox2.Text
' Next part creates a socket to try and connect on with the given user information.
Dim hostadd As System.Net.IPAddress = System.Net.Dns.GetHostEntry(host).AddressList(0)
Dim EPhost As New System.Net.IPEndPoint(hostadd, port)
Dim s As New System.Net.Sockets.Socket(System.Net.Sockets.AddressFamily.InterNetwork, _
System.Net.Sockets.SocketType.Stream, System.Net.Sockets.ProtocolType.Tcp)
Try
s.Connect(EPhost)
Catch
End Try
If Not s.Connected Then
ListBox1.Items.Add("Port " + port.ToString + " is not open")
Else
ListBox1.Items.Add("Port " + port.ToString + " is open")
ListBox2.Items.Add(port.ToString)
End If
Label3.Text = "Open Ports: " + ListBox2.Items.Count.ToString
End SubAdd the following to the Start button_click
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
ListBox1.Items.Add("Scanning: " + TextBox1.Text)
ListBox1.Items.Add("-------------------")
Button2.Enabled = True
Button1.Enabled = False
Timer1.Enabled = True
Timer1.Start()
End SubAdd the following to Button2_click (stop)
Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
'stop button
Timer1.Stop()
Timer1.Enabled = False
Button1.Enabled = True
Button2.Enabled = False
End SubHope this helps.
