vb.net data matrix code Verifying that DHCP Relay Agent Is Functioning in .NET

Generation Code 128 Code Set B in .NET Verifying that DHCP Relay Agent Is Functioning

Verifying that DHCP Relay Agent Is Functioning
Code 128C Generation In .NET
Using Barcode drawer for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
www.OnBarcode.com
Bar Code Encoder In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
www.OnBarcode.com
You can verify that the DHCP Relay Agent is functioning by using the Routing And Remote Access console. To do so, select the DHCP Relay Agent node and view the sta tistics in the details pane. The details pane compiles requests received, replies received, requests discarded, and replies discarded. If this data reveals that both requests and replies have been received, the DHCP Relay Agent is functioning.
Creating Code128 In C#
Using Barcode creation for .NET Control to generate, create Code 128 Code Set B image in VS .NET applications.
www.OnBarcode.com
Printing Code 128 Code Set A In .NET Framework
Using Barcode drawer for .NET framework Control to generate, create Code 128 Code Set B image in Visual Studio .NET applications.
www.OnBarcode.com
Lesson 4
Code 128 Printer In Visual Basic .NET
Using Barcode creation for .NET Control to generate, create Code 128 Code Set A image in VS .NET applications.
www.OnBarcode.com
Barcode Generator In .NET
Using Barcode creator for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
Configuring and Managing Routing Protocols
Generating UPC-A In .NET
Using Barcode printer for ASP.NET Control to generate, create UPC A image in ASP.NET applications.
www.OnBarcode.com
Paint Barcode In VS .NET
Using Barcode printer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
9-67
Code 128 Code Set A Creation In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create Code 128 Code Set C image in ASP.NET applications.
www.OnBarcode.com
Matrix 2D Barcode Creator In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create Matrix Barcode image in ASP.NET applications.
www.OnBarcode.com
Lesson Review
Code 39 Maker In .NET
Using Barcode creation for ASP.NET Control to generate, create Code 39 image in ASP.NET applications.
www.OnBarcode.com
ANSI/AIM ITF 25 Encoder In .NET Framework
Using Barcode generation for ASP.NET Control to generate, create Uniform Symbology Specification ITF image in ASP.NET applications.
www.OnBarcode.com
The following questions are intended to reinforce key information presented in this lesson. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter. 1. What is a weakness of RIP authentication
UPC-A Generator In None
Using Barcode encoder for Online Control to generate, create UCC - 12 image in Online applications.
www.OnBarcode.com
UPC Code Printer In None
Using Barcode printer for Excel Control to generate, create UPCA image in Office Excel applications.
www.OnBarcode.com
2. Besides using RIP authentication, how can you deter rogue routers from providing incorrect routes to your network routers through RIP
Make PDF417 In None
Using Barcode printer for Font Control to generate, create PDF 417 image in Font applications.
www.OnBarcode.com
PDF 417 Drawer In None
Using Barcode generation for Online Control to generate, create PDF-417 2d barcode image in Online applications.
www.OnBarcode.com
3. Name five advantages of OSPF over RIP.
Generating Bar Code In Java
Using Barcode generation for Java Control to generate, create barcode image in Java applications.
www.OnBarcode.com
Encoding PDF-417 2d Barcode In C#
Using Barcode encoder for .NET Control to generate, create PDF 417 image in .NET applications.
www.OnBarcode.com
4. You want to deploy one DHCP server on your network that consists of two subnets. What are two methods that will enable you to achieve this task
UPCA Printer In Objective-C
Using Barcode generator for iPhone Control to generate, create Universal Product Code version A image in iPhone applications.
www.OnBarcode.com
Making Code 128 Code Set B In VB.NET
Using Barcode creation for Visual Studio .NET Control to generate, create Code 128B image in VS .NET applications.
www.OnBarcode.com
Lesson Summary
RIP is a dynamic routing protocol that is easy to deploy but has a number of nota ble limitations. For example, RIP networks are limited to a diameter of 15 hops. In addition, RIP is relatively bandwidth-intensive. RIP has a number of configurable security features, including RIP authentication, peer filtering, route filtering, and neighbors. OSPF is a dynamic routing protocol designed for exchanging routing information within a large or very large internetwork. Although it is difficult to deploy, it has a number of advantages over RIP, including increased efficiency, accuracy, scal ability, and configurability. If you want to provide automatic addressing to all subnets on your network, you must configure each subnet with a DHCP server or a DHCP relay agent pointing to a DHCP server. Alternatively, clients can be separated from DHCP servers or DHCP relay agents by routers able to perform BOOTP forwarding (in other words, RFC 1542 compatible routers).
9-68
9
Routing with Windows Server 2003
Lesson 5: Configuring Packet Filters
When Basic Firewall is enabled on an external interface in the Routing And Remote Access console, that interface blocks all unsolicited traffic from entering your network. However, you might want to restrict all unsolicited requests except those intended for a specific internal service such a Web server. In this case, you can create packet filters that block all traffic from the external network except those requests destined for the specific service you choose.
After this lesson, you will be able to
Configure packet filters to allow access to internal services
Estimated lesson time: 25 minutes
Understanding Packet Filters
Packet filters are rules defined for a particular interface that allow or restrict traffic by source address, destination address, direction, or protocol type. You can think of packet filters as holes you create in a firewall to allow external clients access to specific internal services. Without packet filters, a firewall would simply block all requests orig inating from the external network. The packet filtering feature in Routing And Remote Access is based on exceptions. You can set packet filters per interface and configure them to do one of the following:
Pass through all traffic except packets prohibited by filters. Discard all traffic except packets allowed by filters.
In Windows Server 2003, packet filters occur in two types: input filters and output fil ters. Input filters restrict traffic entering into an interface from the immediately attached network. Output filters restrict traffic being sent from an interface onto the immediately attached network. Figure 9-37 presents an example of an input filter denying all pack ets except those destined for TCP port 1723 and IP address 207.46.22.1.
Lesson 5
Configuring Packet Filters
9-69
Figure 9-37
Example packet filter
Watch for questions in which all packet filters are defined correctly, but whose fil ter action is improperly configured.
Exam Tip
Creating Packet Filters
You create packet filters in the Routing And Remote Access console through the IP Routing node. Within the IP Routing node, select either the General node or the NAT/ Basic Firewall node. Packet filters are then configured through the properties dialog box of the appropriate interface, listed in the details pane. Note that the NAT/Basic Firewall node allows you to create packet filters only for external interfaces, whereas the General node allows you to create packet filters for any interface. To add a packet filter, complete the following steps: 1. Open the Routing And Remote Access console. 2. In the console tree, expand IP Routing, and click the General node. 3. In the details pane, right-click the interface on which you want to add a filter, and then click Properties. The interface properties dialog box opens, shown in Figure 9-38.
9-70
Copyright © OnBarcode.com . All rights reserved.