---
id: 9350
title: "Reconnaissance 103: Host and Port Discovery"
source_domain: projectdiscovery.io
source_url: "https://projectdiscovery.io/blog/reconnaissance-series-3-host-and-port-discovery"
published_at: "2023-03-15T20:36:12Z"
tags: ["bug-bounty", "red-team"]
phying_url: "https://phying.com/item/9350"
lang: en
---

# Reconnaissance 103: Host and Port Discovery

## Summary

Welcome to a 5 part series on Recon with ProjectDiscovery! * Part 1 * Part 2 * Part 3 * Part 4 * Part 5 * Live Host Discovery After gathering all available subdomains, the following process filters all valid ones based on their HTTP method and response content. The httpx tool can collect information about a web server, such as the types of HTTP methods it supports and the contents of its HTTP headers. Httpx During reconnaissance, httpx can gather information about a web server. This inform

## Intelligence Metadata

- **Sources:** projectdiscovery.io
- **Published:** 2023-03-15T20:36:12Z
- **Original:** https://projectdiscovery.io/blog/reconnaissance-series-3-host-and-port-discovery
- **Phying News:** https://phying.com/item/9350