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Beginner Guide

How to Use Wireshark

Wireshark can look overwhelming at first, but the basic workflow is simple. This guide shows you how to install it, choose the right interface, capture packets, use filters, and begin reading network traffic without getting lost in the details.

If you need the conceptual background too, see what Wireshark is and how it works. This page focuses on the practical side of actually using it.

Quick Start

Most beginners only need to follow four steps: install Wireshark, choose the active interface, start a short capture, and apply simple filters like dns or tcp.

Step 1 Install Wireshark correctly
Step 2 Choose the right interface
Step 3 Start a live capture
Step 4 Filter the traffic

Quick Answer

What Is the Basic Way to Use Wireshark?

To use Wireshark, select the network interface that is currently active, start a short packet capture, reproduce the network activity you want to inspect, and then use simple filters such as dns, tcp, http, or ip.addr to narrow the traffic.

Download and Install Wireshark

The safest way to install Wireshark is to download it from the official Wireshark website and follow the setup steps for your operating system. The process is simple, but getting the drivers and permissions right matters.

Windows

Go to the official Wireshark download page.
Download the Windows 64-bit installer.
Run the installer and make sure Npcap is selected.
Finish setup and open Wireshark.

If packet capture does not work later, the problem is often missing Npcap or a permissions issue.

macOS

Download the macOS version from the official site.
Open the .dmg file.
Drag Wireshark into the Applications folder.
Launch it and allow any required permissions.

macOS usually handles packet capture through built-in system support, so no separate Npcap-style driver is normally needed.

Linux

Install Wireshark using your distribution’s package manager.
Allow your user account to capture packets if required.
Log out and back in after permission changes.
Open Wireshark and test a short capture.

On Linux, the most common issue is user permissions rather than the install itself.

Tip: If Wireshark opens but does not capture packets, do not panic. The issue is usually the selected interface, a missing driver, or system permissions. Those problems are common and fixable.

Choose the Right Network Interface

Before you start a capture, you need to select the interface Wireshark should monitor. This is one of the most important beginner steps because choosing the wrong interface often leads to little or no useful traffic.

Pick the Interface Your Device Is Actually Using

In most cases, the correct interface is the one your computer is actively using for internet or network access. On laptops, that is often Wi-Fi. On wired systems, it is usually Ethernet.

Choose Wi-Fi if your system is connected wirelessly
Choose Ethernet if your system is connected by cable
Look for visible activity or movement next to the interface
If you choose the wrong one, you may see little or no traffic

This step matters because Wireshark only captures traffic from the interface you select. If the page feels empty after you start, the interface choice is usually the first thing to double-check.

What Beginners Often Miss

Many systems show several interfaces at once, including virtual adapters or inactive connections. Those can make Wireshark look confusing even when the tool itself is working normally.

Good Sign You Picked the Right One

If you start a capture and then open a website, refresh a page, or use an app, packets should begin appearing quickly in the main packet list.

Tip: If Wireshark shows no useful traffic after you start, the safest next move is to stop the capture and try another interface before assuming something is broken.

Start Capturing Packets

Once you have installed Wireshark and selected the right network interface, the next step is to begin a live capture. This is where you start seeing real traffic on the network and can follow what happens when you open a website, use an app, or test a connection.

Open Wireshark

Launch Wireshark and review the list of available interfaces shown on the start screen.

Select the Interface

Click the active Wi-Fi or Ethernet interface you want Wireshark to monitor.

Start the Capture

Double-click the interface or click the shark fin icon to begin capturing packets.

Generate Traffic

Open a website, refresh a page, or use an app so Wireshark has real activity to capture.

Stop and Review

Click the red stop button when you have enough packets, then begin reviewing the results.

What to Expect First

A fresh capture can fill up quickly, even during a normal browsing session. That is completely normal. You may immediately see DNS, TCP, TLS, and other background traffic. The next step is learning how to narrow that view with Wireshark display filters.

Use Wireshark Filters

Once packets start filling the screen, filters help you focus on the traffic that matters. Instead of scrolling through everything, you can narrow the view to specific protocols, hosts, or conversations. For a deeper walkthrough, see Wireshark Display Filters.

Start Simple and Reduce the Noise

The easiest way to make Wireshark useful is to apply simple display filters after you capture traffic. This does not change what was collected. It only changes what you see, which makes the packet list much easier to read.

dns

Show DNS Traffic

Use this when you want to see domain lookups and confirm whether names are resolving correctly.

tcp

Show TCP Packets

Use this to focus on connection behavior, session setup, retransmissions, and transport-level traffic.

http

Show HTTP Traffic

Use this when readable web traffic is present and you want to inspect requests and responses.

ip.addr == 192.168.1.1

Filter by IP Address

Use this to isolate traffic going to or from one specific system on the network.

Tip: Beginners usually get better results with simple display filters first. Once you are comfortable narrowing traffic after capture, Wireshark becomes much easier to use.

Analyze Packets and Avoid Beginner Mistakes

Once you capture traffic and apply a few filters, the next step is learning what to pay attention to. You do not need to understand every packet. You only need to start spotting useful patterns.

What to Look at First

When you click on a packet, start with the basic clues that explain what is happening. Focus on the packet list and the protocol details instead of trying to read every byte immediately.

Source and destination See which systems are communicating.
Protocol Identify whether the traffic is DNS, TCP, HTTP, TLS, or something else.
Info column Use the summary to understand what the packet is doing.
Requests and responses Look for whether the expected reply actually appears.
Retries or resets Watch for retransmissions, failed handshakes, or reset behavior.

Common Beginner Mistakes

Capturing too much traffic before narrowing the view
Picking the wrong interface and assuming Wireshark is broken
Trying to understand every packet instead of one traffic pattern at a time
Skipping filters and getting overwhelmed by background noise
Thinking no useful packets means nothing is happening

Tip: Start with one simple question, such as “Did DNS resolve?” or “Did the TCP connection complete?” That gives you a much clearer path than trying to decode the entire capture at once. If you want more help narrowing traffic first, go back to Wireshark Display Filters.

Beginner FAQ

Common Questions About Using Wireshark

These beginner questions can help you avoid the most common mistakes when you start capturing and reading network traffic.

Is Wireshark hard to learn?

Wireshark can look difficult at first because it shows a lot of packet details. The basic workflow is not hard, though. Start with short captures, use simple filters, and focus on one problem at a time.

What should I click first in Wireshark?

Start by choosing the network interface that is actively sending and receiving traffic. In most cases, this will be your Wi-Fi or Ethernet connection.

Which interface should I choose?

Choose the interface with visible activity. If you are connected through Wi-Fi, select the Wi-Fi interface. If you are using a cable, select Ethernet. If you choose the wrong interface, you may see little or no traffic.

Why am I not seeing packets?

You may be capturing on the wrong interface, the capture driver may not be installed correctly, or your system may need permission to capture traffic. On Windows, make sure Npcap is installed correctly.

What filters should beginners use first?

Good beginner filters include dns, tcp, http, and ip.addr == 192.168.1.1. These help reduce noise and make the packet list easier to understand.

Can Wireshark show passwords?

Wireshark can show some unencrypted traffic, but most modern websites and apps use encryption. You should only inspect traffic on networks and systems where you have permission.

Is Wireshark legal to use?

Wireshark is legal to use for learning, troubleshooting, and network administration. The important rule is to capture traffic only on networks and devices where you are authorized to do so.

What should you do next?

If you are new, start with a short capture, apply a simple filter like dns or tcp, and then continue with the Wireshark Display Filters guide to learn how to narrow traffic faster.

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