The tools that are used in the network investigation process by the forensic departments in order to get better results while dealing with cyber crimes:
Some of the analysis tools are:
Tools for file analysis
Tools for Internet Analysis
Email and Registry Analysis tools
Database and Network Forensic tools
tools for analysis of mobile devices.
File viewers
Tools for mac Operating system analysis.
Tools to capture data
firewalls
Encryption of network
Like in encryption of the data is encoded by cryptographic codes at the transmitting end and then decoded at the receiving end securely.