Trisul Network Analytics
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====== Articles ======

Articles about network security monitoring,  traffic analytics, setting up measurement, techniques for scaling, threat hunting tips, etc. 


===== Hardware and Data Acquisition =====

[[articles:proxmox_span|Configuring Port Mirror on Proxmox VE 5.1 for Network Security Monitoring applications]] 

[[hardware:erspan|Configuring ERSPAN for packet capture into Network Security Monitoring tools]]


==== Netflow tunneling ====

Tunneling Netflow to a remote Trisul involves preserving the original IP address of the switch/router. We describe three methods to achieve it, NAT, GRE, and Shim Tunnels. 

[[hardware:gatewaynetflow|Using NAT on gateway to send Netflow to remote Trisul]]

[[hardware:gretunnel|Using GRE Tunnel to send Netflow to a remote Trisul]]

[[hardware:shimtunnel|Using a custom Shim Tunnel to send Netflow to a remote Trisul]]

===== Docker =====


[[docker:intro|Using the new TrisulNSM Docker all-in-one NSM image]] 


[[docker:rhel74|Installing Docker and TrisulNSM on RHEL7.4 - step by step instructions]]


[[docker:ubuntu16|Installing Docker and TrisulNSM on Ubuntu 16.04 - step by step instructions]]


[[docker:ubuntumalware|Malware PCAP analysis using TrisulNSM docker on Ubuntu 16.04 Host ]]


[[docker:pcap_analysis|How to analyze large pcaps for free using the TrisulNSM Docker image]]

===== NSM and Packet Analytics Concepts =====


[[articles:livevspcap|Difference between Live capture and Reading PCAP dumps in NSM tooling]] 

[[articles:memcached|Memcached attack on UDP port]] 

[[articles:segmentsmack|Proof of concept script to detect SegmentSmack]] 


===== Scripting =====

[[scripting:introbro|Introduction to Trisul Scripting for Bro IDS users]]


===== TLS Fingerprinting =====


[[app:tlsfingerprint|TLS Fingerprinting to identify encrypted clients]]

[[app:auto_fingerprint|Automatically resolve unknown TLS Fingerprints using Graph Analytics]]

[[script:x509_ext_c2|Trisul LUA script techniques to detect and dump C2 in X.509 extensions]]




===== Intrusion Detection  =====


[[ids:snort|Connecting Trisul to Snort with Emerging Threats Rules ]]


[[ids:snort3|Connecting Trisul to Snort3]]


===== Offline analysis with the WRCCDC PCAP dump =====

In this three part series, we explain techniques and show how to analyze the [[https://archive.wrccdc.org/|2018 WRCCDC PCAP]] dump using TrisulNSM. We appreciate the kind folks at WRCCDC for making this publicly accessible. 

[[offline:wrccdc_pcaps|Part 1: Strategy to analyze large PCAP dumps without getting overwhelmed]]

[[offline:wrccdc_pcaps_trisulnsm|Part 2: How to use the free TrisulNSM Docker image to process the PCAPs]]

[[offline:wrccdc_pcaps_results|Part 3: Screenshots and vids showing some of the results and techniques]]




===== Netflow analytics =====

[[netflow:silk|Using the SiLK importer Trisul APP to analyze Netflow]] 





===== Administration Tips  =====

[[admin:debuggingcrash|Debugging crashes and other problems on the probe]]

[[monit:monitoring_and_maintain_trisul_process|How to use Monit to keep an eye on Trisul processes and restart them if necessary]]




===== External links =====
[[Other links: external_links]]
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