Instant Traffic Analysis with Tshark How-to

Analyzing network forensic data (Become an expert)

As we have seen so far, having some skill with Tshark and analyzing our network on a regular basis can help us greatly in identifying multiple security issues. Besides the network attacks previously seen, we can intelligently use Tshark to investigate security incidents whose origin is unknown. In this recipe we will discuss a couple of examples, data exfiltration by a malicious user and an internal network intrusion.

Getting ready

It's not new to use tunneling techniques to attempt to circumvent firewalls or other countermeasures that do not make use of deep packet inspection. Tools such as iodine, Hping3, Netcross, and so on, can be used to encapsulate certain type of traffic within the payload ...