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Start by installing Wireshark on the same server as DualShield.

Capture RADIUS packets

  1. Launch the Wireshark app
  2. Select "Capture | Options"
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  3. Enter "udp port 1812" in the Capture filter to capture UDP packet only
  4. Click the "Start" button to start capture
  5. Click "Capture | Stop" to end capture

Decrypt RADIUS packets

  1. Go
  2. to Edit > Preferences
  3. to Edit > Preferences
  4. Click to expand
  5. the Protocols tree
  6. the Protocols tree
  7. Scroll down and select RADIUS

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  8. Enter the RADIUS shared secret and
  9. click OK
  10. click OK to save
  11. Enter "udp.port == 1812" in the display filter to display RADIUS traffic only
  12. You will now be able to view the Access-Request and Challenge packets