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Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design. It is known for its simplicity, flexibility, reliability, and scalability. Django is used to build web applications quickly and efficiently, providing developers with a robust set of tools to handle common web development tasks.
When working with Django, you might encounter the error: django.core.exceptions.SuspiciousOperation: Invalid HTTP_HOST header: 'host'.
This error typically occurs when the HTTP_HOST header in a request does not match any of the allowed hosts specified in your Django settings.
When this error occurs, your Django application will raise a SuspiciousOperation
exception, and the request will be blocked. This is a security measure to prevent HTTP Host header attacks.
The Invalid HTTP_HOST header
error is triggered when a request is made to your Django application with a host header that is not recognized or permitted. This can happen if the host header is manipulated or if the application is accessed through an unexpected domain or IP address.
Django uses the ALLOWED_HOSTS
setting to validate incoming requests. If the host header in a request is not listed in ALLOWED_HOSTS
, Django will raise a SuspiciousOperation
exception to protect your application from potential attacks.
To resolve this issue, you need to ensure that the host header in the request is included in the ALLOWED_HOSTS
setting in your settings.py
file.
settings.py
file.ALLOWED_HOSTS
setting. It should look something like this:ALLOWED_HOSTS = []
example.com
, update the setting as follows:ALLOWED_HOSTS = ['example.com']
ALLOWED_HOSTS = ['*']
For more information on Django's ALLOWED_HOSTS
setting, you can refer to the official Django documentation.
To understand more about HTTP Host header attacks, consider reading this OWASP guide.
By ensuring that your ALLOWED_HOSTS
setting is correctly configured, you can prevent the Invalid HTTP_HOST header
error and protect your Django application from potential security threats. Always make sure to review and update your settings as your application evolves and is deployed to different environments.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)