For more information about Network Visualization and vulnerability tools, visit the links below:
https://www.wireshark.org/
https://www.tenable.com/products/nessus-vulnerability-scanner?utm_source=google&utm_medium=cpc&utm_campaign=amer-en-high-velocity&utm_promoter=tenable&gclid=CjwKCAjwzrrMBRByEiwArXcw27-ubbMhRRQCMVSfTj5l_4qGS_YN9XelKEerBQ-hiKs_3at7CSaklBoCHxoQAvD_BwE
https://www.splunk.com/en_us/products/premium-solutions/it-service-intelligence.html
https://sourceforge.net/projects/networkminer/
http://www.advanced-ip-scanner.com/
https://www.opennms.org/en