# Amazon Web Services Keyfax can operate on premise or in the cloud within Amazon Web Services. Whilst we don't have any specific information at this time we do have customers running Keyfax within AWS and can assist further with any questions upon request. ### AWS Elastic Load Balancer We have found other AWS users running into issues with AWS load balancers forwarding requests. To resolve these issues please ensure... 1. If possible temporarily try disabling ALB attribute “Drop invalid headers”. I would not suggest permanently disabling this as it is generally good practice to strip unknown headers. Keyfax does not require any unknown headers. 2. Ensure there are no redirect rules set-up on the ALB – these may strip HTTP headers. For example ensure no "Redirect to HTTPS" rules are enabled. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.keyfax.biz/technical/cloud-operation/amazon-web-services.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.