Installing Libpcap or Npcap

Installing required third party software.

On Windows

1. Download Npcap installer from https://nmap.org/npcap.

2. Install Npcap in "Winpcap Compatible Mode"

Other installation methods:

Powershell

$urlPath = "https://nmap.org/npcap/dist/npcap-0.96.exe"
$checksum = "83667e1306fdcf7f9967c10277b36b87e50ee8812e1ee2bb9443bdd065dc04a1"

# Download the file
echo "Downloading... ($urlPath)"
wget $urlPath -UseBasicParsing -OutFile $PSScriptRoot"\npcap.exe"

# Now let's check its checksum
$_chksum = $(CertUtil -hashfile $PSScriptRoot"\npcap.exe" SHA256)[1] -replace " ",""
if ($_chksum -ne $checksum){
    echo "Hashes NOT match."
    exit
} else {
    echo "Hashes match."
    echo "Installing Npcap..."
}
# Run installer
Start-Process $PSScriptRoot"\npcap.exe" -ArgumentList "/S /npf_startup=yes /loopback_support=yes /dlt_null=no /admin_only=no /dot11_support=no /vlan_support=no /winpcap_mode=yes" -wait
echo "Npcap has been installed."

Chocolatey

choco install nmap -y

On Linux

Debian/Ubuntu

sudo apt install libpcap0.8

CentOS

yum install libpcap

On Mac OS X

Libpcap should be installed on Mac OS X by default.

Using latest version of libpcap:

1. Download libpcap source code from https://www.tcpdump.org
2. tar -xzvf libpcap*.tar.gz

3. cd libpcap

4. ./configure --prefix=/usr/local

5. make

6. sudo make install

7. Run your application with custom native library path jna.library.path=/usr/local/lib