Red Hat NETWORK BASIC - USER REFERENCE GUIDE 4.0 Betriebsanweisung PDF herunterladen (Seite 3)

Define Unknown or Customized Ports ..................................................................................................... 53

PVS Real-Time Traffic Analysis Configuration Theory .................................................................. 53

Focus Network ........................................................................................................................................... 53

Detecting Server and Client Ports ............................................................................................................ 54

Detecting Specific Server and Client Port Usage .................................................................................... 54

What this Means for Firewall Rules .......................................................................................................... 55

Working with the SecurityCenter .............................................................................................................. 55

Selecting Rule Libraries and Filtering Rules ........................................................................................... 55

Detecting Encrypted and Interactive Sessions........................................................................................ 56

Routes and Hop Distance ......................................................................................................................... 56

Alerting ....................................................................................................................................................... 56

New Host Alerting ...................................................................................................................................... 56

Internal Passive Vulnerability Scanner IDs ..................................................................................... 57

What is a Passive Vulnerability Scanner ID? ........................................................................................... 57

Internal Passive Vulnerability Scanner IDs .............................................................................................. 57

Working with Passive Vulnerability Scanner Plugins .................................................................... 58

Vulnerability and Passive Fingerprint Overview ..................................................................................... 58

Downloading New Vulnerability Plugins ................................................................................................... 58

Writing Custom Plugin Libraries ............................................................................................................... 58

Restarting the Passive Vulnerability Scanner ........................................................................................... 58

Writing Passive Vulnerability Scanner Plugins ....................................................................................... 58

Plugin Keywords ...................................................................................................................................... 58

Plugin Libraries ........................................................................................................................................ 61

Basic Passive Vulnerability Scanner Example ......................................................................................... 61

More Complex Passive Vulnerability Scanner Example ........................................................................... 61

Case Insensitive Example ........................................................................................................................ 62

Passive Vulnerability Scanner Network Client Detection .......................................................................... 63

The Passive Vulnerability Scanner can Match “Previous” Packets ........................................................... 63

The Passive Vulnerability Scanner can Match Binary Data ...................................................................... 64

Negative Matches .................................................................................................................................... 64

Time Dependent Plugins .......................................................................................................................... 65

Writing Passive Vulnerability Scanner Real-Time Plugins ..................................................................... 66

Real-Time Plugin Model ........................................................................................................................... 66

New Keywords ......................................................................................................................................... 66

Example Failed Telnet Login Plugin ......................................................................................................... 66

Example Finger User List Enumeration Plugin ......................................................................................... 67

Example Unix Password File Download Web Server Plugin .................................................................... 67

Example Generic Buffer Overflow Detection on Windows Plugin ............................................................. 68

Passive Vulnerability Scanner Corporate Policy Plugins ....................................................................... 69

Detecting Custom Activity Prohibited by Policy ........................................................................................ 70

Detecting Confidential Data in Motion ...................................................................................................... 71

Passive Vulnerability Scanner Operating System Fingerprints .................................................... 72

Passive Operating System Fingerprinting ............................................................................................... 72

For Further Information .................................................................................................................... 73

Appendix 1: Working with SecurityCenter ...................................................................................... 74

Architecture ............................................................................................................................................... 74

Managing Vulnerabilities ........................................................................................................................... 74

Updating the PVS Management Interface ................................................................................................ 74

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