How to Use Nmap to Scan Subnets for Common Ports
Nmap is one of the most powerful tools for discovering devices and services on a network. Whether you’re assessing security……
$ grep -rn "#Networking" ./posts
How to Run a Cron Job Only If a TCP Port Is Open
Sometimes you want your cron job to run only if a specific TCP service is available — for example, a database, API endpoint, or SSH……
Using PowerShell to Check if a Port is Open and export results to an Excel file(Cross-Platform…
PowerShell is a powerful cross-platform tool available on Windows, macOS, and Linux. While some PowerShell cmdlets, such as……
How to minimize SSH connection time using connection multiplexing
SSH (Secure Shell) is a widely used protocol for securely accessing remote servers and executing commands. While SSH is a powerful tool……
Linux: How to create a ping report with a simple script
Recently i had the following request, there was a need for a solution that would read all entries in /etc/hosts and ping each host and……
How send data using ping (or how ping can turn evil!)
We all know ping, its very useful tool that allows us to verify connectivity between hosts and troubleshoot issues like network latency and……
Linux: How to port forward only while a process uses a port.
I work in an environment where the email servers are behind an SSH gateway, and sending emails through them is a pain since we need to do……
Netcat: pipe commands over network.
We all know pipes, pipes are used to transfer data from one process output to another process input, but this concept is limited to……
Linux: create your own TCP port scanner!
Imagine the following situation, you have to check TCP services running on remote hosts in a subnet but you don't have any tools like nmap……
Nmap network reconnaissance using TCP Ping
In a previous article we had discussed about Nmap network reconnaissance using various ICMP requests , which can be a powerful tool that……