TIPS - Curl

Introduction

This article lists a few ways to call curl, depending on your need.

Curl calls

Fake the DNS resolution

Use case:

• your website is behind a WAF and the FQDN resolves to it instead of the web server directly (the origin).
• your website is behind a reverse proxy, but you want to access the underlying web service with appropriate host header in your request.

curl --resolv <my.domain>:443:<IP> https://<my.domain>[/<my_uri>]

Add a request header

Curl option: -H

Sample call:

curl -IL -H '<header name>:<header value>' https://<URL to curl>