Justniffer

justniffer is a TCP sniffer. It reassembles and reorders packets and displays the tcp flow in a customizable way. It can log network traffic in web server log format. It...

Free
Open Source
Linux

network tcp packet sniffer

justniffer is a network protocol analyzer that captures network traffic and produces logs in a customized way, 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 native capture file format is libpcap format, which is also the format used by tcpdump and various other tools.

reliable tcp flow rebuilding

the main justniffer's feature is the ability to handle all those complex low level protocol issues and retrieve the correct flow of the tcp/ip traffic: ip fragmentation, tcp retransmission, reordering. etc. it uses portions of linux kernel source code for handling all tcp/ip stuff. precisely, it uses a slightly modified version of the libnids libraries that already include a modified version of linux code in a more reusable way.

optimized for "request / response" protocols. it is able to track server response time

justniffer was born as tool for helping in analyzing performance problem in complex network environment when it becomes impractical to analyze network captures solely using low level packet sniffers (wireshark , tcpdump, etc.) . it will help you to quickly identify the most significant bottlenecks analyzing the performance at "application" protocol level.

in very complex and distributed systems is often useful to understand how communication takes place between different components, and when this is implemented as a network protocol based on tcp/ip (http, jdbc, rtsp, sip, smtp, imap, pop, ldap, rest, xmlrpc, iiop, soap, etc.), justniffer comes in handy. often the logging level and monitoring systems of these systems does not report important information to determine performance issues such as the response time of each network request.

Links to official Justniffer sites

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The Best 3 Justniffer Alternatives

676 Like

Wireshark

Wireshark is the world's foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network.

Free Open Source Mac OS X Windows Linux BSD

Network Monitoring Network usage history
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tcpdump

tcpdump is a common packet analyzer that runs under the command line. It allows the user to intercept and display TCP/IP and other packets being transmitted or received over a network to which the computer is attached.

Free Open Source Mac OS X Windows Linux BSD

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Justniffer

Links to official Justniffer sites

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The Best 3 Justniffer Alternatives

Wireshark

tcpdump

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