Local practice workspace · saved educator templates · illustrative tools only

    Preview portrait of an educator pointing while teaching
    Teaching preview · not a live camera

    Packet Capture · Practice Preview

    Demonstration material
    FileEditViewCapture
    No.TimeSourceDestinationProtocolLengthInfo
    10.00000010.0.1.2410.0.1.1DNS74Standard query 0x4a21 A lab.seesthru.local
    20.00218410.0.1.110.0.1.24DNS118Standard query response 0x4a21 A 10.0.1.40
    30.00490110.0.1.2410.0.1.40TCP66443 → 51244 [SYN] Seq=0 Win=64240
    40.00611210.0.1.4010.0.1.24TCP6651244 → 443 [SYN, ACK] Seq=0 Ack=1
    50.00634010.0.1.2410.0.1.40TCP54443 → 51244 [ACK] Seq=1 Ack=1
    60.00877510.0.1.2410.0.1.40TLSv1.3517Client Hello (SNI=lab.seesthru.local)
    70.01140210.0.1.4010.0.1.24TLSv1.31484Server Hello, Change Cipher Spec
    80.01488010.0.1.2410.0.1.40TLSv1.3127Change Cipher Spec, Application Data
    90.01933110.0.1.4010.0.1.24TLSv1.3892Application Data
    100.04120610.0.1.5510.0.1.24ARP42Who has 10.0.1.24? Tell 10.0.1.55
    110.052714192.168.4.1210.0.1.24HTTP318GET /metrics HTTP/1.1
    120.06103310.0.1.24192.168.4.12TCP54443 → 49102 [RST, ACK] Seq=1 Ack=1
    Read-only practice surface · not live capture · not vendor software

    Select a source in Source layout, then use its top grip to move it or a corner handle to resize it. Tap a packet row or spreadsheet cell to fit educator focus. Saved templates open as read-only local practice surfaces, and focus starts clear so it never points at the wrong area. Use Edit focus or right-click the glow for corner handles. Escape exits edit. Video stays full opacity; opacity and blur apply only to the practice surface. Screen sharing uses the browser picker and stays local to this workspace. It does not control OBS or another desktop app.