Implementing Network Traffic Analysis With Arkime

---
name: implementing-network-traffic-analysis-with-arkime
description: Use when deploy and query Arkime (formerly Moloch) for full packet capture
  network traffic analysis. Uses the Arkime API v3 to search sessions, download PCAPs,
  analyze connection patterns, detect beaconing behavior, and identify suspicious
  network flows. Monitors DNS queries, HTTP traffic, and TLS certificate anomalies
  across captured traffic. Use when deploying and query arkime (formerly moloch) for
  full packet capture.
domain: cybersecurity
tags:
- implementing
- network
- traffic
- analysis
subdomain: network-security
version: '1.0'
author: oyi77
license: Apache-2.0
nist_csf:
- PR.IR-01
- DE.CM-01
- ID.AM-03
- PR.DS-02
category: cybersecurity
---

# Implementing Network Traffic Analysis With Arkime

## Overview

Cybersecurity skill for implementing network traffic analysis with arkime. Follows industry best practices and security standards.

## When to Use
**Trigger phrases:**
- "implementing network traffic analysis with arkime"
- "Deploy and query Arkime (formerly Moloch) for full packet capture network traffi"


- When deploying or configuring implementing network traffic analysis with arkime capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation


## When NOT to Use

- When you lack proper authorization for testing
- For production systems without change management
- When the task requires legal or compliance expertise beyond technical scope


## Prerequisites

- Familiarity with network security concepts and tools
- Access to a test or lab environment for safe execution
- Python 3.8+ with required dependencies installed
- Appropriate authorization for any testing activities

## Workflow

```python
# Example: IOC detection
import re

IOC_PATTERNS = {
    "ip": r"\b(?:\d{1,3}\.){3}\d{1,3}\b",
    "domain": r"\b[a-z0-9-]+\.[a-z]{2,}\b",
    "hash_md5": r"\b[a-f0-9]{32}\b",
    "hash_sha256": r"\b[a-f0-9]{64}\b",
}

def extract_iocs(text: str) -> dict:
    return {k: re.findall(v, text) for k, v in IOC_PATTERNS.items()}
```

1. **Assess Requirements** — Evaluate current environment and define network traffic analysis implementation requirements.
2. **Design Architecture** — Plan the network traffic analysis architecture, including components, integrations, and data flows.
3. **Configure Components** — Set up arkime for network traffic analysis according to vendor best practices and security guidelines.
4. **Test Integration** — Validate that all components work together. Run functional and security tests.
5. **Deploy to Production** — Roll out the implementation with monitoring and rollback capabilities.
6. **Validate and Document** — Verify the implementation meets requirements. Document configuration and runbooks.

## Tools

- **arkime** — Primary tool for this skill
- **Configuration Management** — Infrastructure as code and automation
- **Monitoring Stack** — Observability and alerting
- **Documentation Platform** — Runbooks and architecture docs


## Process

1. **Prepare** — Gather requirements, verify prerequisites, set up environment
1. **Execute** — Run implementing network traffic analysis with arkime workflow with configured parameters
1. **Verify** — Validate output meets requirements, document results

## Verification

- [ ] All network traffic analysis procedures executed completely and documented
- [ ] Findings validated against multiple data sources
- [ ] False positives identified and filtered
- [ ] Results documented with evidence and timestamps
- [ ] Recommendations provided with risk-based prioritization

## Anti-Rationalization Table

| Rationalization | Reality |
|---|---|
| "We are too small to be targeted" | Automated attacks target everyone. Size does not matter. |
| "Security slows us down" | A breach slows you down 100x more. Build security in from the start. |
| "We will fix it after launch" | Vulnerabilities in production are exploited within hours. Fix before deploy. |