Dim ClientIP, Forwaded, RealIP
RealIP = ""
ClientIP = Request.ServerVariables("REMOTE_ADDR")
If ClientIP <> "" Then
RealIP = ClientIP
Else
'El usuario está accediendo a través de un Proxy.
Forwaded = Request.ServerVariables("HTTP_X-Forwarded-For")
If Forwaded <> "" Then RealIP = Forwaded
End If
Textbox1.SelectionStart = Textbox1.TextLength
Textbox1.ScrollToCaret()