User`s guide

ZigBee™ Protocol Tools

3.3.2.3 HIDING AND UNHIDING PACKETS

Packets in the Packet Sniffer window can be hidden in two ways:

• Using the filter function as described in Section 3.3.2.2 “Using the Packet Filter”

• Right clicking on a packet and selecting Hide from the pop-up menu

The hidden packets can be redisplayed by right clicking on the appropriate “X Hidden

Packet(s)” box in the Packet Sniffer window and clicking UnHide.

3.3.3 Analyzing Secure Transmissions

If the network key is available, the ZENA analyzer can decrypt the data and display it

in the Packet Sniffer window.

A series of messages utilizing security is shown in Figure 3-17.

To decrypt these messages, enable decryption by clicking the Security button or by

selecting the Tools>Security

menu option. Enter the network key and security level

used during the transmission and click Accept Security Parameters. The messages

will now be displayed in their decrypted format, as shown in Figure 3-18.

Note: Multiple packets can be selected for hiding by holding down the control key

while clicking each desired packet. A range of packets can be selected by

clicking on the first packet of the range, then holding down the shift key

while clicking on the last packet of the range. Each selected packet will be

outlined in red. When all desired packets have been selected, right click

and select Hide to hide all selected packets.

Note 1: This feature is intended to support development efforts only. Network

transmissions cannot be decrypted unless both the network key and the

encryption method (security level) are known.

2: The ZENA analyzer supports security decryption at the MAC and NWK

layers. APS layer decryption is not currently supported.

3: Secure packet decryption is computation intensive. If network traffic is

heavy, it may not be possible to decrypt data during real-time display

without losing packets. Data should then be decrypted during packet

playback.