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tcpdump VS lsof

Compare tcpdump VS lsof and see what are their differences

tcpdump

tcpdump is a common packet analyzer that runs under the command line.

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
l
lsof

Lsof lists open files for running UNIX processes. It is a

Rating
0 reviews
Alternatives Is it good?
NinjaOne
NinjaOne (Formerly NinjaRMM) provides remote monitoring and management software that combines powerful functionality with a fast, modern UI. Easily remediate IT issues, automate common tasks, and support end-users with powerful IT management tools. sponsored

Which is more popular?

Monitoring Tools popularity
87% vs 13%
alternatives listed
90 vs 22

Base details

Website, pricing, platforms and company facts side by side.

tcpdump
l
lsof
Website tcpdump.org people.freebsd.org
Pricing
Open source
—
Listed in
Monitoring Tools Log Management Productivity Time Tracking +1
Monitoring Tools Command Line Tools Performance Monitoring Accounting +1

Features and specs

What each product offers, as listed by its team.

tcpdump 5 features
l
lsof 0 features
  • Powerful packet capturing
    tcpdump offers comprehensive capabilities for capturing network packets, providing detailed insights into network traffic, which makes it a powerful tool for network diagnostics and analysis.
  • Wide compatibility
    Being a widely used tool, tcpdump is compatible with numerous operating systems, including Linux, Unix, and macOS, ensuring accessibility across different platforms.
  • Filter flexibility
    tcpdump supports a wide range of filtering options that allow users to capture specific types of traffic, ensuring efficient and targeted packet capture.
  • Command-line interface
    tcpdump is a command-line tool, which provides advanced users the ability to script and automate tasks, making it highly efficient for those familiar with command-line operations.
  • Free and open-source
    tcpdump is open-source software, which means it is freely available for use and can be modified and distributed by anyone, fostering a community of users and contributors.

Possible disadvantages

  • Steep learning curve
    For users unfamiliar with command-line interfaces and packet-level networking, tcpdump can be difficult to learn due to its complex commands and options.
  • Minimal graphical interface
    tcpdump lacks a graphical user interface (GUI), which can make it less accessible for users who prefer visual tools over text-based interfaces.
  • Limited analysis capability
    While tcpdump is excellent for capturing packets, it offers limited built-in analysis features, requiring additional tools for comprehensive analysis of captured data.
  • High resource usage
    Running tcpdump with extensive capture options or on high-traffic networks can result in significant CPU and memory usage, potentially impacting system performance.
  • Security risks
    tcpdump requires root or elevated privileges to capture packets, which could pose security risks if not managed correctly, especially on sensitive systems.

No features have been listed yet.

Analysis

An editorial look at what each product does well and who it suits.

tcpdump
l
lsof

No analysis of tcpdump yet.

Overall verdict

  • lsof (List Open Files) is a mature, battle-tested Unix/Linux utility that reliably reveals which files, sockets, and resources are opened by processes, making it an indispensable diagnostic tool for system administrators and developers.

Why this product is good

  • Provides comprehensive visibility into open files, network sockets, pipes, and devices tied to running processes
  • Extremely useful for troubleshooting 'device busy' errors, port conflicts, and locating processes holding onto deleted files
  • Highly portable across many Unix-like systems including FreeBSD, Linux, macOS, and Solaris
  • Long history of stable, well-maintained releases with extensive documentation and community support
  • Powerful filtering options let you query by user, process, port, file, or network connection

Recommended for

  • System administrators diagnosing resource and file-locking issues
  • Developers debugging network connections and socket usage
  • Security professionals investigating suspicious process activity and open network ports
  • Anyone needing to identify which process is using a specific file, directory, or port before unmounting or killing

Videos

Walkthroughs and reviews on video.

tcpdump 3 videos + Add
l
lsof 2 videos + Add

Tcpdump - Protocol Review 5 (TCP)

More videos

  • - Tcpdump - Protocol Review 3 (UDP)
  • - Tcpdump - Protocol Review 4 (DNS) - Draft

8 Basic lsof Commands Every Sysadmin Needs to Know

More videos

  • - HakTip - Network monitoring in Linux with lsof

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
tcpdump
l
lsof
87% 87%
Monitoring Tools
13% 13%
0% 0%
Command Line Tools
100% 100%
100% 100%
Log Management
0% 0%
0% 0%
Performance Monitoring
100% 100%

User comments

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

tcpdump no reviews yet
l
lsof no reviews yet

We have no reviews of lsof yet. Be the first one to post

Alternatives to tcpdump and lsof

When comparing tcpdump and lsof, you can also consider the following products.

  • Wireshark

    Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

    Compare Wireshark to tcpdump or lsof:

    Wireshark vs tcpdump Wireshark vs lsof
  • htop

    htop - an interactive process viewer for Unix. This is htop, an interactive process viewer for Unix systems. It is a text-mode application (for console or X terminals) and requires ncurses. Latest release: htop 2.

    Compare htop to tcpdump or lsof:

    htop vs tcpdump htop vs lsof
  • NetworkMiner

    NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows.

    Compare NetworkMiner to tcpdump or lsof:

    NetworkMiner vs tcpdump NetworkMiner vs lsof
  • Sysdig

    Sysdig is an open source, system-level exploration that capture system state and activity from a running Linux instance, then save, filter and analyze.

    Compare Sysdig to tcpdump or lsof:

    Sysdig vs tcpdump Sysdig vs lsof
  • netcat

    Netcat is a featured networking utility which reads and writes data across network connections...

    Compare netcat to tcpdump or lsof:

    netcat vs tcpdump netcat vs lsof
  • v
    vtop

    vtop is a graphical command-line tool that uses unicode braille to chart CPU and memory usage.

    Compare vtop to tcpdump or lsof:

    vtop vs tcpdump vtop vs lsof
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