My second edition of Traffic Talk, titled Using Wireshark and Tshark display filters for troubleshooting, has been posted. From the article:
Welcome to the second installment of Traffic Talk, a regular SearchNetworkingChannel.com series for network solution providers and consultants who troubleshoot business networks. In these articles we examine a variety of open source network analysis tools. In this edition we explore Wireshark and Tshark display filters. Display filters are one of the most powerful, and sometimes misunderstood, features of the amazing Wireshark open source protocol analyzer. After reading this tip you'll understand how to use display filters for security and network troubleshooting.