10 BEST Packet Sniffer Tools In 2021 (Network Sniffer Tools)

Read this comprehensive review of the top Packet Sniffer Tools to select the Best Network Sniffer for your packet analysis requirements:

Packet Sniffing is the process of monitoring every packet that is passing through a network. Packet Sniffers will help the network administrators to monitor their network and get the insights on that.

It will also help you to detect the root cause of a network issue, troubleshooting network issues, traffic analysis, bandwidth management, and network security & compliance.

Packet Sniffers

Packet Sniffer Review

Two broad categories of Packet Sniffers are Hardware Packet Sniffers and Software Packet Sniffers.

Software sniffers are more popular these days. Hardware sniffers also help with network troubleshooting. They are plugged directly into a network and store/forward the information which is collected.

Fact Check: Packet Sniffers can gather any type of data from passwords & login details to the websites visited by users. It can even tell what is viewed by the user on the website. Hence it is used by various companies for tracking the employee’s network use. It is also used to scan the incoming traffic for malicious code.

Any data pipeline for network capture and analysis consists of several steps like Packet Capture, Protocol Parsing, and Search & Visualize.

The below image will show you the network packet analysis pipeline with Wireshark and Elastic Stack:

network packet analysis pipeline with Wireshark and Elastic Stack

[image source]

Pro Tip: Various free & open sources as well as commercial tools for packet sniffing are available. Some tools are simple and provide reliable & clean data collection and leave a small footprint. For simple sniffing and quick diagnostics, free & open-source tools will be a good option.

Paid or commercial tools provide features like intuitive analysis along with capturing data, deep packet inspection, graphs & charts and alerts on exception cases, etc. These tools are suitable for large enterprises.

Packet Sniffing Tips:

  • Collecting all the packet data will make the information overload. Experienced users use the filtered mode when using the packet sniffer and capture the specific information.
  • They can capture the actual data of the packet if it is not encrypted during data transmission.
  • For security, you can configure the network sniffers and copy the header data only. It will be sufficient for network monitoring and analytics.
  • This restriction will reduce workload and storage requirements, but still, a large volume of data will fill up space. To avoid this, we can use packet sampling.
  • Packet Sampling is copying a packet data at set frequencies, for example, at every 10th packet. It may not provide the exact picture but gives sufficient results for a longer period of monitoring.

How do Packet Sniffers work?

Every network has various components like workstations and servers, which are called nodes in networking terminology. The data is transferred in the form of packets between these nodes.

Every packet has actual data and control information. This control information helps the packet to reach the destination for the source. This control information includes various details like IP addresses of sender and receiver, packet sequencing information, etc.

When the data packets are transmitted through the network, they pass through several nodes in the network. These packet’s control information will get checked by each network adapter and the connected device. It is checked for the node it is headed toward.

For the normal circumstances, the packet gets ignored if it is addressed for another node. Packet sniffing programs make some nodes to collect all or a defined sample of packets regardless of their destination address. Packet Sniffers analyze the network by using these packets.

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List Of Top Network Sniffing Tools

Here is the list of popular Network Sniffers:

  1. SolarWinds Network Packet Sniffer
  2. Wireshark
  3. Paessler PRTG
  4. ManageEngine NetFlow Analyzer
  5. Tcpdump
  6. WinDump
  7. NetworkMiner
  8. Colasoft Capsa
  9. Telerik Fiddler
  10. Kismet

Comparison Of Top Network Sniffers

 Our RatingsBest FeaturesPlatformFree TrialPrice
SolarWinds Network Packet Sniffer

SolarWinds_Logo
Star_rating_5_of_5Deep packet inspection & Detailed insights.WindowsA fully functional free trial available for 30 days.Get a quote.
Wireshark

Wireshark_Logo
Star_rating_5_of_5Packet Capturing & data Analysis.Windows, Mac, Linux, Solaris, FreeBSD, NetBSD, etc.--Free & Open Source.
Paessler PRTG

PRTG_Logo
Star_rating_4.5_of_5Monitor web traffic, mail traffic, file transfer traffic, etc.Windows, iOS, Android.Available for 30 days.It starts at $1750.
ManageEngine NetFlow Analyzer

ManageEngine_Logo
Star_rating_4.5_of_5In-depth traffic analysis.Windows, Mac, Linux, iOS, Android, etc.Available for 30 days.Essential: $595 &
Enterprise: $1295
The price is for 10 interfaces.
TCPdump

TCPDump_Logo
Star_rating_4_of_5Command-line packet sniffing & provides packet info.Mac, Android, Linux, Solaris, FreeBSD, etc.--Free

Review of the Network Sniffers:

#1) SolarWinds Network Packet Sniffer

Best for small to large businesses.

SolarWinds

SolarWinds Network Packet Sniffer provides the information of the application or the network whether it is affecting the end-user experience or not. It comes with the SolarWinds Network Performance Monitor (NPM). SolarWinds NPM will provide you an at-a-glance overview of real performance stats based on packet-level data through a dashboard.

This helps with pinpointing problematic traffic. It performs a deep packet inspection.

SolarWinds Network Packet Sniffer has a WiFi packet capture tool. It can differentiate normal traffic from abnormal traffic and provides detailed data and transaction volume according to the application. These insights will help you with spotting the problem and avoid the network security concern.

Features:

  • NPM can gather data over 1200 applications, including social media apps.
  • The packets traveling across your network will be examined on a granular level.
  • Administrators will find out the reason for slowdowns. Is it because of applications or network-wide problems?
  • It helps administrators to stay on top of network security threats.
  • Administrators will be able to use their bandwidth more effectively.

Verdict: The tool will keep your network running smoothly and ensure that the end-user experience will remain unaffected. It provides the benefits of enterprise-grade network packet sniffing to optimize your network.

Price: A fully functional free trial is available for SolarWinds NPM. It offers the product with Perpetual licensing (Starts at $2995) and Subscription licensing (starts at $1583).

Website: SolarWinds Network Packet Sniffer


#2) Wireshark

Best for small to large businesses.

Wireshark

Wireshark is a network protocol analyzer. You will get to see what is happening on your network at a microscopic level with the help of this tool. It is a popular tool and is used in many commercial and non-profit enterprises, government agencies, and educational institutions as a de facto standard. It supports various platforms such as Windows, Mac, Linux, Solaris, FreeBSD, NetBSD, etc.

Features:

  • Wireshark can perform a deep inspection of hundreds of protocols. It keeps adding new protocols.
  • It can capture live or perform offline analysis.
  • Files that are compressed with gzip can be captured by Wireshark and decompressed on the fly.
  • It will allow you to export the output to XML, PostScript, CSV, or Plain Text.

Verdict: Wireshark has powerful display filters in the industry. It supports many protocols for decryption like IPsec, ISAKMP, etc. It can read the live data from Ethernet, IEEE 802.11, PPP/HDLC, ATM, etc.

Price: Wireshark is a free and open-source tool.

Website: Wireshark


#3) Paessler PRTG

Best for small to large businesses.

PRTG

Paessler PRTG network monitor is a professional all-in-one packet sniffing tool. It will provide valuable insights into your infrastructure and network performance. It supports Windows. It has various possibilities for monitoring everything like bandwidth and traffic. PRTG makes the use of various technologies like SNMP, NetFlow, WMI, network sniffing, etc. while monitoring the data packets.

Features:

  • PRTG can monitor traffic and data packets.
  • It can filter by IP address, by protocol, and by data type.
  • PRTG will provide a constant & comprehensive overview.
  • It uses multiple network-sniffing options.
  • It has a mobile app for iOS and Android devices.

Verdict: Paessler PRTG is not just a network sniffing tool but works as comprehensive monitoring software. You will be able to monitor all the vital hardware parameters like CPU and memory. For all your hardware, PRTG is a perfect solution as a network sniffer.

Price: Paessler PRTG offers a free version. You will get an unlimited version of PRTG for 30 days, then you will revert to the free version. The price for the tool starts at $1750 for 500 sensors.

Website: Paessler PRTG


#4) ManageEngine NetFlow Analyzer

Best for small to large businesses.

ManageEngine

NetFlow Analyzer is a traffic analysis tool by ManageEngine. It will perform in-depth traffic analysis. It provides real-time traffic graphs and reports. NetFlow Analyzer is available in two editions, Essential and Enterprise. The Essential edition is for a single network and Enterprise edition is for distributed networks.

Features:

  • NetFlow Analyzer performs application and protocol monitoring.
  • It has a customizable dashboard that will give you a bird’s-eye view of the most vital traffic information.
  • You can set up alerts based on the thresholds for your network traffic so that you will get to know about the violations in your network usage.
  • It provides the features for advanced monitoring such as distributed monitoring, capacity planning report, Cisco NBAR reporting, etc.

Verdict: NetFlow Analyzer is a complete bandwidth management solution that will provide comprehensive visibility into your network traffic. The mobile app will let you monitor the network traffic on the move from anywhere, anytime. It supports Android and iOS devices.

Price: There are two editions of NetFlow Analyzer, Essential ($595 for 10 interfaces) and Enterprise ($1295 for 10 interfaces). You can try both the editions for 30-days. You can get a quote for Perpetual and Subscription licensing. It also offers a free edition that can monitor 2 interfaces without any license.

Website: ManageEngine NetFlow Analyzer


#5) TCPdump

Best for users with in-depth knowledge of the tool.

TCPdump

TCPdump is a packet analyzer. This data-network packet analyzer is a powerful command-line tool. It is a portable C/C++ library for network traffic capture. It supports most of the Unix-like OS such as Linux, Solaris, FreeBSD, NetBSD, Mac OS, etc.

You can make the use of short and simple commands to perform the functions like capturing only failed packets, saving the captured packets to file, etc.

Features:

  • TCPdump can print the contents of network packets.
  • Packets from a network interface card can be read.
  • It can write packets to standard output or a file.

Verdict: TCPdump is distributed with a BSD license. There is no need to have a heavy-duty PC to function the tool smoothly. There is a learning curve for this tool and you should know to use this tool while using it.

Price: TCPdump is free to use.

Website: TCPdump


#6) WinDump

Best for Windows users.

WinDump

WinDump is a TCPdump’s version for Windows OS. It provides full compatibility with TCPdump. It has functions to watch, diagnose, and save to disk the network traffic based on the complex rules. It supports Windows 95, 98, ME NT, 2000, XP, 2003, and Vista.

Features:

  • WinDump makes use of the WinPcap library and drivers to capture.
  • WinPcap library and drivers are freely available to download.
  • WinDump can be used for 802.11b/g wireless capture and troubleshooting through the Riverbed AirPcap adapter.

Verdict: Like TCPdump, WinDump is distributed under a BSD-style license.

Price: WinDump is available for free to use.

Website: WinDump


#7) NetworkMiner

Best for incident response teams and for law enforcement.

NetworkMiner

NetworkMiner is a Network Forensic Analysis Tool by Netresec. It supports Windows, Mac, Linux, and FreeBSD. It has functionalities for passive network sniffing and packet capturing. It can detect operating systems, sessions, hostnames, open ports, etc. To perform the offline analysis and regenerate transmitted files & certificates from PCAP files, it can parse PCAP files.

Features:

  • By parsing a PCAP file and sniffing the traffic directly from the network, NetworkMiner can extract files, emails, and certificates transferred over the network.
  • NetworkMiner doesn’t put any traffic on the network while capturing packets or doing passive network sniffing.
  • With the Professional edition, you will get the features of DNS Whitelisting, Web browser tracing, online ad & tracker detection, etc.

Verdict: NetworkMiner is popular among organizations around the world. It has an intuitive user interface that provides the extracted artifacts and will make it easier to perform advanced Network Traffic Analysis. This data presentation in an intuitive UI that helps the analyst or forensic investigator with the analysis.

Price: NetworkMiner is available in two editions, NetworkMiner Free edition and NetworkMiner Professional (USD 900).

Website: NetworkMiner


#8) Colasoft Capsa

Best for network administrators and network engineers.

Capsa

Capsa is a Network Analyzer that has functionalities to monitor, analyze, and troubleshoot your wired & wireless network. It is a portable tool for network performance analysis and diagnostics. It has a powerful packet capturing and analysis capabilities. It has an easy-to-use interface. It is suitable for both veteran and novice users.

It can protect and monitor networks in a critical business environment.

Colasoft’s free plan, Capsa Free, has limited features like monitoring of 10 IP addresses, 4 hours session timeout length, manually saving files, and provides adapter monitors. With the Enterprise plan, there are no limitations on IP addresses to be monitored and session timeout length.

Features:

  • Capsa can capture the packet in real-time.
  • It can save the data transmitted over local networks, including wired networks and wireless networks.
  • It supports over 1800 protocols and sub-protocols.
  • It can monitor multiple network behavior like monitoring of email & instant messaging traffic and identifying security and data handling violations.

Verdict: Capsa is powerful and comprehensive for packet capturing and analysis. You will be able to quickly pinpoint the network problems. It provides the extensive statistics of each host.

Price: A free plan is also available with Capsa. Capsa Enterprise will cost you $995. It offers a free trial for 30 days.

Website: Colasoft Capsa


#9) Telerik Fiddler

Best for small to large businesses.

Fiddler

Telerik Fiddler is a free web debugging proxy. It can log all HTTP (S) traffic between the computer and the Internet. It will help you with inspecting traffic. It will let you set breakpoints and fiddle with the request/response. Fiddler Everywhere can be used for any browser, application, and process. It supports Windows, Mac, and Linux platforms.

Features:

  • Fiddler Everywhere can inspect web sessions, remote API calls, cookies, and header properties in detail.
  • It supports both HTTP and HTTPS protocols for all app scenarios on the web and desktop.
  • It can help you to decrypt HTTPS traffic and securely displaying/modifying requests that are otherwise hidden to network observers.
  • It has a feature of filtering out the noise and limiting your view to specific apps, URLs, and processes.

Verdict: As it is a proxy, all the network requests from a browser or app will be routed through Fiddler Everywhere. It supports all the major browsers.

Price: Fiddler Everywhere is currently available in two editions, Free and Pro. Pro plan will cost you $12 per user per month. Teams and Enterprise plans are coming soon.

Website: Telerik Fiddler


#10) Kismet

Best for wireless packet sniffing.

Kismet

Kismet is a free tool that has functionalities to work as a wireless network & device detector, sniffer, wardriving tool, and WIDS framework. It can work with WiFi interfaces, Bluetooth interfaces, some SDR hardware, and other specialized capture hardware. It supports Linux and OSX and limited support to Windows 10 under the WSL framework.

For Linux OS, most of the WiFi cards, Bluetooth interfaces, and other hardware devices are supported by Kismet. For OSX, built-in Wi-Fi interfaces are supported and for Windows 10 Kismet will work with remote captures. Kismet has the ability to capture “Per-Packet Information” headers.

Features:

  • Kismet has basic wireless IDS features like detecting active wireless sniffing programs
  • It can log all the sniffed packets.
  • Kismet will save all the sniffed packets in a TCPdump/Wireshark or Airsnort compatible file format.
  • It can detect default or non-configured networks, probe requests. It can identify the level of wireless encryption used on a given access point.

Verdict: Kismet is one of the popular tools. It is up to date and an open-source tool. It can detect the presence of wireless access points & wireless clients without sending any loggable packets and can associate them with each other.

Price: Kismet is a free network sniffer tool

Website: Kismet


Conclusion

Network Sniffers are used in various use cases like managing bandwidth, increasing efficiencies, ensuring delivery of business services, enhancing security, etc. SolarWinds Network Packet Sniffer, Wireshark, PRTG Network Monitor, ManageEngine NetFlow Analyzer, TCPdump, and WinDump are our top recommended network sniffing tools.

Wireshark, TCPdump, WinDump, Kismet are completely free tools. SolarWinds Network Packet Sniffer, PRTG Network Monitor, ManageEngine NetFlow Analyzer, Network Miner, Colasoft Capsa, and Telerik Fiddler are commercial tools. NetworkMiner, Colasoft Capsa, and Telerik Fiddler offer free plans.

Many free and commercial packet analyzers are available in the market. All of them vary in features and functionalities. We hope this article has helped you with choosing the right packet sniffer.

Research Process:

  • Time taken to research this article: 25 Hours
  • Total tools researched: 16
  • Top tools shortlisted: 10
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