Sniffer® Portable Professional User's Guide - NetScout

Chapter 8
Sniffer Portable Professional can decrypt
both WPA/WPA2 and WEP encrypted
packets simultaneously.
Use these options to specify the
keys to use for decryption of
WEP-encrypted data. WEP is an
early 802.11 encryption
technology and is not as
commonly seen as WPA-WPA2.
Use these options to specify
the passphrase used to
decrypt data on different SSIDs
(wireless networks).
200 Sniffer Portable Professional
Figure 8-18. Select WEP - WPA Keys Dialog Box
Use the Select WEP-WPA Keys dialog box (Figure 8-18) to specify
the WEP and/or WPA keys to be used for decrypting the data in the
selected buffer or trace file.
4 To specify new WEP keys for decryption, start by setting the WEP
Key Entry Mode option to specify whether you want to enter the
keys as either Hex or ASCII. Then, enter up to four separate
encryption keys. For each key, do the following:
a Specify the length of the key by selecting the appropriate
option. Keys can be either None, 40-bit, or 128-bit. Use the
None option if no encryption is used on the network.
Depending on the length of the key specified, some or all of
the adjacent fields become active, enabling you to specify the
keys in use.
b Specify the exact value for each key in the adjoining spaces
provided.
NOTE: The four encryption keys in use on a WEP-encrypted
network are all typically the same length — either 40-bit or