Client IP Address

when ever you want to find the IP Adress of client use one of these two Response.Write(Request.UserHostAddress) or
Response.Write(Request.ServerVariables(“LOCAL_ADDR”))
But remember one thing you have to access this web page with server address as

http://yourSyatemIP(or)Servername/projectName/page.aspx
not with localhost like 
http://localhost/projectName/page.aspx

Below code is to find the Different types of server variables

Dim NameArray() As String
Dim VisitorSV As NameValueCollection
Dim I As Integer
VisitorSV = Request.ServerVariables
NameArray = VisitorSV.AllKeys
For I = 0 To UBound(NameArray)
Response.Write(“<br>”)
Response.Write(NameArray(I) & “: ” & VisitorSV.Item(I) & “<BR>”)
Next