Free Packet lab: Read network captures packet by packet, Wireshark style.

A Wireshark-style packet analyser in your browser: a display filter bar, the packet list, a protocol tree and bytes pane, Follow TCP Stream and a conversations summary. Opens with two sample captures (a plaintext login and a workstation incident), or open your own classic .pcap file, which is read locally and never uploaded.

Free, no login, nothing to install. Your work stays in this browser.

What you can do

• Filter packets with Wireshark-style display filters
• Read Ethernet, IP, TCP, UDP, DNS, HTTP and TLS layers
• Follow a TCP stream and see conversation statistics
• Open your own .pcap or save the sample as one

Graded, AI-assisted versions live in network security and incident response courses.