qrcode.net example c# Starting your alerts manually in Visual Studio .NET

Generator QR Code 2d barcode in Visual Studio .NET Starting your alerts manually

Starting your alerts manually
Printing QR Code ISO/IEC18004 In Visual Studio .NET
Using Barcode creation for Visual Studio .NET Control to generate, create QR Code image in Visual Studio .NET applications.
www.OnBarcode.com
Denso QR Bar Code Decoder In .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Once they are set up, your alerts can notify you of just about any network problem on your system.
Generating Bar Code In Visual Studio .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Bar Code Decoder In .NET Framework
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Monitoring Network Traffic with Netstat
Making QR Code In Visual C#.NET
Using Barcode generator for VS .NET Control to generate, create QR-Code image in VS .NET applications.
www.OnBarcode.com
QR Code JIS X 0510 Generation In VS .NET
Using Barcode generator for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
www.OnBarcode.com
One tool you can use to help monitor your traffic is a command-line tool called Netstat. Netstat provides information about existing network connections and network activity statistics.
QR Code ISO/IEC18004 Generator In VB.NET
Using Barcode printer for VS .NET Control to generate, create Quick Response Code image in .NET framework applications.
www.OnBarcode.com
Draw UPC A In .NET
Using Barcode creation for Visual Studio .NET Control to generate, create UPCA image in Visual Studio .NET applications.
www.OnBarcode.com
12-14
Draw Barcode In Visual Studio .NET
Using Barcode generation for .NET Control to generate, create bar code image in Visual Studio .NET applications.
www.OnBarcode.com
Drawing 1D In .NET Framework
Using Barcode drawer for Visual Studio .NET Control to generate, create 1D image in .NET framework applications.
www.OnBarcode.com
12
Making Denso QR Bar Code In VS .NET
Using Barcode generator for .NET Control to generate, create Denso QR Bar Code image in .NET applications.
www.OnBarcode.com
ISSN - 13 Creator In .NET Framework
Using Barcode drawer for .NET framework Control to generate, create ISSN - 13 image in Visual Studio .NET applications.
www.OnBarcode.com
Maintaining a Network Infrastructure
GTIN - 128 Generation In Visual C#
Using Barcode maker for VS .NET Control to generate, create GS1 128 image in .NET framework applications.
www.OnBarcode.com
Bar Code Creator In Java
Using Barcode maker for Android Control to generate, create barcode image in Android applications.
www.OnBarcode.com
For instance, if you wanted to determine on which ports a system was listening for connections, you could execute the Netstat a command. This would determine that the ports that you want closed are indeed closed. However, just knowing which ports are open might not be enough data to close the hole. Indeed, you will want to know which application is using that port so you can further investigate the application and close the port. You can figure out the relationship between open ports and applications with the Netstat o command. When you run the Netstat o command, you can see the protocol, the local inbound port that is open, the connection from or to the other computer, and the port it is using, as shown in Figure 12-11.
Barcode Drawer In Objective-C
Using Barcode maker for iPhone Control to generate, create barcode image in iPhone applications.
www.OnBarcode.com
GS1-128 Decoder In VB.NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Figure 12-11
Bar Code Creator In Java
Using Barcode generation for Java Control to generate, create bar code image in Java applications.
www.OnBarcode.com
Print European Article Number 13 In None
Using Barcode generation for Office Word Control to generate, create GS1 - 13 image in Office Word applications.
www.OnBarcode.com
Using Netstat o to show all the processes and ports used on a server
DataMatrix Creator In Objective-C
Using Barcode encoder for iPad Control to generate, create DataMatrix image in iPad applications.
www.OnBarcode.com
Print UPC Symbol In None
Using Barcode generation for Office Excel Control to generate, create GTIN - 12 image in Microsoft Excel applications.
www.OnBarcode.com
In this example, notice that the last entry shows that Computer1 and Computer2 are communicating over port 3389. In this specific instance, you can see that the Process Identifier (PID) is 736. If you then want to correlate that PID with the actual process that is using the port, you must return to Task Manager. In Task Manager, you can select the Processes tab. However, by default the Processes tab does not display the PIDs of processes. You can choose to see the PIDs by opening the View menu, selecting Columns, and selecting PID (Process Identifier), as shown in Figure 12-12.
Lesson 1
Monitoring Network Performance 12-15
Figure 12-12
Using Task Manager to show the PID
Then you will obtain a listing of the processes on the machine that includes the PIDs, as shown in Figure 12-13.
Figure 12-13
Using Task Manager to see which processes align with which PIDs
Simply match the PID and the process, and you will know which process or application has the port open. If your PID points to svchost, multiple services are probably running as a single process. To see which services they are, run Tasklist /svc. In this case, if you run Tasklist /svc, you will see that the svchost that equates to this computer s PID of 736 is for Terminal Services. Terminal Services uses port 3389 for communications. In this way, you can find applications and services that open ports and close the door if you want.
12-16
12
Maintaining a Network Infrastructure
Windows Server 2003 Lite and Full Network Monitor Tools
In 3, Monitoring and Troubleshooting TCP/IP Connections, you installed the lite version of Network Monitor. This version comes with Windows Server 2003 and is pretty powerful for a free tool. However, remember that Microsoft has a more powerful full version of the Network Monitor tool. The full version of the tool, which is available only by purchasing Microsoft Systems Management Server, handles two tasks that the lite version cannot:
It can run in promiscuous mode; in other words, it is able to capture 100 percent of the network traffic. It enables you to see where else Network Monitor is running. This information is useful when you are setting up multiple monitoring stations across your network and then using a central monitoring point to collect the data. You can also use it to monitor and prevent inside hack attempts by tracking down offenders, as shown in Figure 12-14.
Figure 12-14
Tracking other Network Monitor instances
Using Network Monitor Triggers
Network Monitor s main function is to capture packets as they cross the network. So much occurs at once that trying to find the information you need is often nearly impos sible. Therefore, one important skill to master with Network Monitor is the ability to quickly locate what you are looking for when the action happens. Setting Triggers Network Monitor provides a facility to alert you once certain con ditions are met. This facility might be helpful under a variety of circumstances where you set up Network Monitor and then decide to move on to other tasks. You can set up this ability by using triggers. To configure a trigger, start Network Monitor, and
Copyright © OnBarcode.com . All rights reserved.