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Network monitoring and analysis : a protocol approach to troubleshooting

Langue : Anglais

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Couverture de l’ouvrage Network monitoring and analysis : a protocol approach to troubleshooting

Make your Windows-based networks faster, smarter, and more reliable -- step-by-step!

  • Network troubleshooting from the ground up! Real-world scenarios, easy examples, and plenty of illustrations.
  • Increase network speed, improve traffic distribution, and optimize network applications!
  • Fighting intrusions: Use network monitoring to secure your network!
Ever wonder what in the world is happening "under the hood" of your network? Why things suddenly slow down, print jobs fail? Network monitoring is the least understood aspect of network administration -- and one of the most important. In this book, a leading networking expert shows you exactly how to monitor and analyze your Windows-based network -- and how to use the information to maximize performance, reduce congestion, plan for growth -- even identify intrusions! Start by reviewing the TCP/IP, IPX/SPX, Ethernet, and Samba protocol basics you need in order to monitor and analyze networks effectively. Inspect network traffic from four different perspectives: client traffic, server traffic, application traffic, and service traffic. Next, learn how to use each version of Microsofts Network Monitor (Netmon) -- and compare commercial network monitoring tools, discovering when to use each. Finally, review four of the most important networking troubleshooting scenarios, in-depth: connectivity problems, faulty applications, hardware problems, and compromised security -- walking through the process of identifying, analyzing, and solving the problem, step-by-step. The accompanying CD-ROM includes sample capture files showing real network traces, custom filters for Microsoft Network Monitor troubleshooting, batch files that trigger unattended Netmon sessions, and more. For all network and Windows system administrators seeking to improve the performance of their networks.

Ed Wilson (MCSE, MCT, MASE), is a Senior Networking Specialist with Full Service Networking, a Microsoft Solution Provider in Cincinnati, OH. He has co-authored several networking books from IDG, Osborne, McGraw-Hill and New Riders.

I. PROTOCOL ANALYSIS: A LOOK AT THE PLAYERS.

1. Basic Network Models.
The OSI Model.Application Layer. Presentation Layer. Session Layer. Transport Layer. Network Layer. Data Link Layer. Physical Layer. The IEEE 802 Project. Enhancements Made to the OSI Model. Logical Link Control Layer (LLC). Media Access Control Layer (MAC). A Look at How Data Makes it Onto the Wire. The Packet Creation Process. Ethernet Communication Specifics. What Is the Role of Protocols in All This? Protocol Stack. A Layered Approach. So How Do I Tie All This Together? Application Protocols. Transport Protocols. Network Protocols. Connection-Oriented Network Service. Connectionless Network Service. Data Link Layer Addresses. Network Layer Addresses. Data Encapsulation. IP over LAN Technologies. Flow Control. Internetworking Functions of the OSI Network Layer. WAN Services. Chapter Review. In the Next Chapter.

2. The TCP/IP Protocol Suite.
Transmission Control Protocol. A Look at the TCP Header. A Look at the Three-Way Handshake. The TCP Quiet Time Concept. Half-Open Connections and Other Anomalies. Reset Generation. Reset Processing. Scenario 1: Local User Initiates the Close. Scenario 2: TCP Receives a FIN from the Network. Scenario 3: Both Users Close Simultaneously. The Communication of Urgent Information. Managing the Window. User/TCP Interface. TCP User Commands. Send. Receive. Close. Status Abort. TCP/Lower-Level Interface. Events That Occur: User Calls. LISTEN STATE. SEND Call. Internet Protocol. The IP Header. Chapter Review. In the Next Chapter.

3. The SPX/IPX Protocol.
SPX Protocol. SPX Header. IPX Protocol. Connectionless Protocol. Operates at the OSI Network Layer. Packet Structure. IPX Addressing. Network Number. Reserved Network Numbers. Internal Network Number. Node Number. Socket Number. How IPX Routing Works. Session and Datagram Interfaces. Message Header Structures. Chapter Review. In the Next Chapter.

4. Server Message Blocks.
SMB Operation Overview. Server Name Determination. Server Name Resolution. Message Transport. Sample Message Flow. Dialect Negotiation. Connection Establishment. Backwards Compatibility. Session Setup. Connection Management. SMB Signing. Opportunistic Locks. Exclusive Oplocks. Batch Oplocks. Level II Oplocks. Security Model. Resource Share/Access Example. Authentication. Distributed File System (DFS) Support. SMB Header. TID Field. UID Field. PID Field. MID Field. Flags field. Flags2 Field. Status Field. Timeouts. Data Buffer (BUFFER) and String Formats. Access Mode Encoding. Open Function Encoding. Open Action Encoding. File Attribute Encoding. Extended File Attribute Encoding. Batching Requests ("AndX" Messages). Chapter Review. In the Next Chapter.

II. NETWORK TRAFFIC ANALYSIS AND OPTIMIZATION: A LOOK AT THE ISSUES

5. A LOOK AT CLIENT TRAFFIC.
CLIENT INITIALIZATION DHCP traffic. WINS Client Traffic. Name Registration and Renewal. Logon Traffic. Finding a Logon Server. Netlogon Optimization. Browsing. Browser Host Announcements. Where Are the Backup Browsers? Browser Traffic Optimization. Chapter Review. In the Next Chapter.

6. A Look at Server Traffic.
DNS Resolving an Address. Recursive Look-ups. Integration with WINS. DNS Optimization. BDC Initialization. Where Is the PDC? Updates to the Database. Optimizing Account Sync Traffic. NetLogon Service. Chapter Review. In the Next Chapter.

7. A Look at Application Traffic
File and Print WINS Request 194Broadcast. ARP. Three-Way Handshake. NetBIOS Session. SMB Dialect Negotiation. Internet Browsing. Web Pages. Secure Sockets. Optimizing Intranet Browser Traffic. Chapter Review. In the Next Chapter.

8. Exchange and Internet Mail.
Exchange Opening and Closing the Session. Exchange Server in Action. POP3 Protocol. Exchange Server to Server. Chapter Revi

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