Password: cyberops Step 2: Open a terminal and start tcpdump.Ī. Step 1: Start the virtual machine and log in. These records can then be analyzed using different applications that read pcap files, including Wireshark. You will use command options to save the traffic to a packet capture (pcap) file. In this part, you will use tcpdump to capture the content of HTTP traffic. Internet connection Instructions Part 1: Capture and View HTTP Traffic.In this lab, you will explore and capture HTTP and HTTPS traffic using Wireshark. Threat actors commonly use HTTPS to hide their activities. Just because a site uses HTTPS does not mean it is a trustworthy site. Regardless of HTTP or HTTPS, it is only recommended to exchange data with websites that you trust. This is done through the use of certificates that can be viewed later in this lab. This algorithm hides the true meaning of the data that is being exchanged. With HTTPS, encryption is used via a mathematical algorithm. With HTTP, there is no safeguard for the exchanged data between two communicating devices. HyperText Transfer Protocol (HTTP) is an application layer protocol that presents data via a web browser. Part 2: Capture and view HTTPS traffic Background / Scenario.Instructor Note: Red font color or gray highlights indicate text that appears in the instructor copy only. However, if you know the TCP port used (see above), you can filter on that one.10.6.7 Lab – Using Wireshark to Examine HTTP and HTTPS Traffic (Instructor Version) You cannot directly filter HTTP2 protocols while capturing. Show only the HTTP2 based traffic: http2 Capture Filter Display FilterĪ complete list of HTTP2 display filter fields can be found in the display filter reference On the SampleCaptures page, there is also http2-16-ssl.pcapng containing a HTTP2 (draft 16) over SSL capture (with keys) and a link to a TLS 1.3 HTTP/2 capture.

Sample of HTTP2 (draft-14) - Created with nghttp2, need to use Decode as HTTP2 Http2-h2c.pcap - HTTP/2 via Upgrade: h2 mechanism ( curl -http2 -v /robots.txt /humans.txt)

Wireshark 2.4 - header decompression support now requires external nghttp2 package (true for official Windows/macOS builds).

Wireshark 2.0 - initial HPACK support (header decompression).

The well known TCP port for HTTP/2 traffic is 443 (and 80).

TCP: Typically, HTTP/2 uses TCP as its transport protocol.

Hypertext Transfer Protocol version 2 (HTTP2) Protocol dependencies

Wireshark capture filter for https