March 2018
Intermediate to advanced
626 pages
17h 32m
English
book
Network Analysis Using Wireshark 2 Cookbook - Second Edition
by Nagendra Kumar Nainar, Yoram Orzach, Yogesh Ramdoss
Content preview from Network Analysis Using Wireshark 2 Cookbook - Second Edition
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How to do it...
To look for ARP/MAC-based attacks, follow these steps:
- Connect Wireshark to any port on the network.
- Look for massive ARP broadcasts. Since ARP requests are broadcasts, they will be distributed in the entire layer 2 network (that is, on a single VLAN). In the following screenshot, you can see a typical ARP-scan pattern. It's important to note that this ARP scan can be an application that works this way, for example, SNMP software that discovers the network and router that use gratuitous ARP. It is a problem only if it comes from an unidentified source.
Figure 19.3: ARP scan pattern
- There are also some suspicious MAC patterns. ...
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