UDP is connectionless and does not require a session setup as does TCP. Your PC’s DNS query and the DNS server’s response make use of the User Datagram Protocol (UDP) as the transport layer protocol. When you type a website URL into your browser, your PC performs a DNS query to the DNS server’s IP address. DNS is a distributed network of servers that translates user-friendly domain names like to an IP address. When you use the internet, you use the Domain Name System (DNS). Part 3: Analyze Captured DNS or UDP Packets Background / Scenario Part 2: Use Wireshark to Capture DNS Queries and Responses Part 1: Record a PC’s IP C onfiguration Information Find the entry for QUIC and uncheck the box.Lab – Using Wireshark to Examine a UDP DNS Capture (Answers Version)Īnswers Note : Red font color or g ray highlights indicate text that appears in the instructor copy only. If you don't want the QUIC protocol to be identified, simply go to the "Analyze" menu and select "Enabled Protocols" from the list. If you were using a version of Wireshark prior to these versions, the same traffic may likely have been classified as UDP (or another protocol). QUIC is one of the "newer" classifications, as it appears to have been added in 1.11.3/1.12.0. It may or may not be QUIC traffic no program of this type is perfect, but Wireshark will be correct more often than not. In your case because the traffic has been analyzed as QUIC data. I've using wireshark and noticed that I no longer see UDP but QUIC, why is this the case? Typically you will see this as HTTP, FTP, IRC, etc. The same is true for TCP traffic as well.
However many types of UDP traffic will be identified (SIP, RTP, DNS, etc). If the UDP dissector is the most specific dissector for the captured data, than the Protocol column will show UDP. What is displayed in the Protocol field of Wireshark's Packet List Pane is the information returned that is most specific after analyzing the data and will determine how the data is presented. Wireshark uses dissectors and lua scripts to analyze and classify capture traffic (or parts thereof).
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