Infrastructure Engineering: Systems, Networking, Databases & the Internet
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Network architecture, internet protocols, database and systems design, and the infrastructure engineering decisions that determine whether real production systems hold up under load.
Bulk Domain Availability Check via CLI (Bash + Python Only)
You have a list of 50 domain name ideas. Maybe you are launching a product, picking a brand, or trying to find something halfway decent that has not already been squatted. Whatever the reason, typing them one at a time into a registrar search box is not a workflow, it is punishment. This post shows […]
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How to Set Up a Cloudflare Tunnel on a Raspberry Pi (From Zero to Live)
Goal: Expose a service running on your Raspberry Pi to the public internet, securely, without port-forwarding or a static IP, using Cloudflare Tunnel. What You’ll End Up With Prerequisites Requirement Notes Raspberry Pi (any model) Running Raspberry Pi OS (64-bit recommended) A domain name e.g. yourdomain.com purchased anywhere (Namecheap, GoDaddy, etc.) SSH access to the […]
Read more →Scan SSL/TLS Ciphers With nmap and sslscan on macOS
To retrieve a list of the SSL/TLS cipher suites a particular website offers you can either use sslscan or nmap alternatively you can just use nmap (note: i use “-e en0” to bypass zscaler): Another variant (including cert dates, again “-e en0” is used to bypass zscaler):
Read more →SYN Flood Testing With hping3: Parallel Processes Guide
A SYN flood test using hping3 that allows you to specify the number of SYN packets to send and scales horizontally with a specific number of processes can be created using a Bash script with the xargs command. This approach allows you to distribute the workload across multiple processes for better performance. The Script This […]
Read more →Mac Terminal: Scan TLS Certificates with NMAP and SSLScan
The below script will give you basic information on a websites certificate: NMAP is provides a simple way to get a list of available ciphers from a host website / server. Additionally, nmap provides a strength rating of strong, weak, or unknown for each available cipher. First, download the ssl-enum-ciphers.nse nmap script (explanation here). Then from the same […]
Read more →SYN Flood Testing with hping3: A Practical Guide
Getting an application knocked out with a simple SYN flood is both embarrassing and avoidable. Its also very easy to create a SYN flood and so its something you should design against. Below is the hping3 command line that I use to test my services against SYN floods. I have used quite a few mods, […]
Read more →NMAP + Claude MCP: 20 Vulnerability Scans on macOS
Introduction NMAP (Network Mapper) is one of the most powerful and versatile network scanning tools available for security professionals, system administrators, and ethical hackers. When combined with Claude through the Model Context Protocol (MCP), it becomes an even more powerful tool, allowing you to leverage AI to intelligently analyze scan results, suggest scanning strategies, and […]
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Dublin Traceroute on macOS: Install & Usage Guide
Modern networks are far more complex than the simple point to point paths of the early internet. Equal Cost Multi Path (ECMP) routing, carrier grade NAT, and load balancing mean that packets from your machine to a destination might traverse entirely different network paths depending on flow hashing algorithms. Traditional traceroute tools simply cannot handle […]
Read more →host Command DNS Queries on macOS: 9 Examples
1. Find a list of IP addresses linked to a domain To find the IP address for a particular domain, simply pass the target domain name as an argument after the host command. For a comprehensive lookup using the verbose mode, use -a or -v flag option. The -a option is used to find all Domain records and Zone […]
Read more →curl Command: Get HTTP Response Headers in Terminal
Web devs need to know the http headers their apps/webpages. This can be easily achieved using a browser plugin for Chrome or Firefox. But I prefer to use the command terminal, and curl makes this really easy.
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Why Tech Empires Fall: Arrogance, Control & Collapse
1. Arrogance Is the Drawbridge Every great empire in history has been brought low by a version of the same mistake. The fortress is so strong, the moat so wide, and the walls so high, that the people inside begin to believe they have transcended the rules. They stop serving the people beyond the walls. […]
Read more →Mac Routing Table: Redirect Website Traffic to en0
This was a hard article to figure out the title for! Put simply, your mac book has a route table and if you want to move a specific IP address or dns from one interface to another, then follow the steps below: First find the IP address of the website that you want to re-route […]
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