# Justniffer

Justniffer is a Network Detection and Response product. It runs on-premises. Pricing is free.

A network protocol analyzer for capturing and analyzing network traffic with a focus on TCP/IP flow reconstruction and response time tracking.

## What is Justniffer?

Justniffer is a network protocol analyzer that captures network traffic and produces logs in a customized way. It can emulate Apache web server log files, track response times, and extract all intercepted files from the HTTP traffic. It lets you interactively trace TCP traffic from a live network or from a previously saved capture file. Justniffer's main feature is the ability to handle complex low-level protocol issues and retrieve the correct flow of TCP/IP traffic, including IP fragmentation, TCP retransmission, and reordering. It is optimized for 'Request / Response' protocols and can track server response time.

Tags: Network Discovery, Protocol Analysis

## Where it fits in your security program (NIST CSF 2.0)

- [Detect](https://cybersectools.com/guides/building-detect-program-small-team): helps you spot attacks and unusual activity.

## Quick facts

- Category: [Network Security](https://cybersectools.com/categories/network-security) · [Network Detection and Response](https://cybersectools.com/categories/ndr)
- Deployment: On-Premises
- Company size fit: Startup, SMB, Mid-Market, Enterprise
- Pricing model: Free
- Website: justniffer.sourceforge.net

## Where it ranks

No shortlist covers this product's category yet. The closest is [Best SASE Solutions for Business](https://cybersectools.com/shortlists/best-sase-solutions).

## Justniffer FAQ

### What is Justniffer?

Justniffer is a product in the Network Detection and Response category. It covers Network Discovery and Protocol Analysis.

### What is the pricing for Justniffer?

Justniffer is free. Download and setup instructions are at https://justniffer.sourceforge.net/.

### What are alternatives to Justniffer?

Alternatives to Justniffer listed on CybersecTools:

1. [Enea Qosmos Embedded DPI & Threat Detection Software](https://cybersectools.com/tools/enea-qosmos-embedded-dpi-and-threat-detection-software) - Embedded DPI & threat detection SDK for traffic classification & analysis (Commercial)
2. [ipoque R&S PACE 2 (DPI Engine)](https://cybersectools.com/tools/ipoque-rands-pace-2-dpi-engine) - Embeddable DPI engine for real-time protocol/app classification up to L7. (Commercial)
3. [Innspark Flowgen](https://cybersectools.com/tools/innspark-flowgen) - Network probe providing traffic visibility and analysis via NetFlow and IPFIX protocols (Commercial)
4. [Telesoft FlowProbe](https://cybersectools.com/tools/telesoft-flowprobe) (Commercial)
5. [EfficientIP SOLIDserver DDI](https://cybersectools.com/tools/efficientip-solidserver-ddi) - DDI platform with DNS security, DHCP, and IPAM for enterprise networks. (Commercial)

Compare all Justniffer alternatives at [https://cybersectools.com/alternatives/justniffer](https://cybersectools.com/alternatives/justniffer)

### What deployment and organization size does Justniffer fit?

Justniffer is available as on-premises software. It is listed for startups, small businesses, mid-market companies and enterprises. It is free.

## Compare Justniffer with similar solutions

- [Justniffer vs Enea Qosmos Embedded DPI & Threat Detection Software](https://cybersectools.com/compare/enea-qosmos-embedded-dpi-and-threat-detection-software-vs-justniffer)
- [Justniffer vs ipoque R&S PACE 2 (DPI Engine)](https://cybersectools.com/compare/ipoque-rands-pace-2-dpi-engine-vs-justniffer)
- [Justniffer vs Innspark Flowgen](https://cybersectools.com/compare/innspark-flowgen-vs-justniffer)

All alternatives to Justniffer: [/alternatives/justniffer](https://cybersectools.com/alternatives/justniffer)

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Source: https://cybersectools.com/tools/justniffer

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