URL forbidden 403 when using a tool but fine from browser

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I have some images that I need to do a HttpRequestMethod.HEAD in order to find out some details of the image.

When I go to the image url on a browser it loads without a problem.

When I attempt to get the Header info via my code or via online tools it fails

An example URL is http://www.adorama.com/images/large/CHHB74P.JPG

As mentioned, I have used the online tool Hurl.It to try and attain the Head request but I am getting the same 403 Forbidden message that I am getting in my code. I have tried adding many various headers to the Head request (User-Agent, Accept, Accept-Encoding, Accept-Language, Cache-Control, Connection, Host, Pragma, Upgrade-Insecure-Requests) but none of this seems to work.

It also fails to do a normal GET request via Hurl.it. Same 403 error.

If it is relevant, my code is a c# web service and is running on the AWS cloud (just in case the adorama servers have something against AWS that I dont know about). To test this I have also spun up an ec2 (linux box) and run curl which also returned the 403 error. Running curl locally on my personal computer returns the binary image which is presumably just the image data.

And just to remove the obvious thoughts, my code works successfully for many many other websites, it is just this one where there is an issue

Any idea what is required for me to download the image headers and not get the 403?

same problem here.

Locally it works smoothly. Doing it from an AWS instance I get the very same problem.

I thought it was a DNS resolution problem (redirecting to a malfunctioning node). I have therefore tried to specify the same IP address as it was resolved by my client but didn't fix the problem.

My guess is that Akamai (the service is provided by an Akamai CDN in this case) is blocking AWS. It is understandable somehow, customers pay by traffic for CDN, by abusing it, people can generate huge bills.

Connecting to www.adorama.com (www.adorama.com)||:80... connected.

HTTP request sent, awaiting response... 
HTTP/1.1 403 Forbidden
Server: **AkamaiGHost**
Mime-Version: 1.0
Content-Type: text/html
Content-Length: 301
Cache-Control: max-age=604800
Date: Wed, 23 Mar 2016 09:34:20 GMT
Connection: close
2016-03-23 09:34:20 ERROR 403: Forbidden.

HTTP 403 Error Forbidden, The http error 403 occurs when a browser is denied access to a web page. Tools. Website Checker. Free online Performance Analysis of Web The http status code 403 itself expresses that the requested URL does indeed exist, but the With some websites, searching for specific directories is actively� The 403 Forbidden error is an HTTP status code that means that accessing the page or resource you were trying to reach is absolutely forbidden for some reason. Different web servers report 403 Forbidden errors in different ways, the majority of which we've listed below.

I tried that URL from Amazon and it didn't work for me. wget did work from other servers that weren't on Amazon EC2 however. Here is the wget output on EC2

wget -S http://www.adorama.com/images/large/CHHB74P.JPG
--2016-03-23 08:42:33--  http://www.adorama.com/images/large/CHHB74P.JPG
Resolving www.adorama.com...
Connecting to www.adorama.com||:80... connected.
HTTP request sent, awaiting response... 
  HTTP/1.0 403 Forbidden
  Server: AkamaiGHost
  Mime-Version: 1.0
  Content-Type: text/html
  Content-Length: 299
  Cache-Control: max-age=604800
  Date: Wed, 23 Mar 2016 08:42:33 GMT
  Connection: close
2016-03-23 08:42:33 ERROR 403: Forbidden.

But from another Linux host it did work. Here is output

wget -S http://www.adorama.com/images/large/CHHB74P.JPG
--2016-03-23 08:43:11--  http://www.adorama.com/images/large/CHHB74P.JPG
Resolving www.adorama.com...
Connecting to www.adorama.com||:80... connected.
HTTP request sent, awaiting response... 
  HTTP/1.0 200 OK
  Content-Type: image/jpeg
  Last-Modified: Wed, 23 Mar 2016 08:41:57 GMT
  Server: Microsoft-IIS/8.5
  X-AspNet-Version: 2.0.50727
  X-Powered-By: ASP.NET
  ServerID: C01
  Content-Length: 15131
  Cache-Control: private, max-age=604800
  Date: Wed, 23 Mar 2016 08:43:11 GMT
  Connection: keep-alive
  Set-Cookie: 1YDT=CT; expires=Wed, 20-Apr-2016 08:43:11 GMT; path=/; domain=.adorama.com
Length: 15131 (15K) [image/jpeg]
Saving to: \u201cCHHB74P.JPG\u201d

100%[=====================================>] 15,131      --.-K/s   in 0s      

2016-03-23 08:43:11 (460 MB/s) - \u201cCHHB74P.JPG\u201d saved [15131/15131]

I would guess that the image provider is deliberately blocking requests from EC2 address ranges.

The reason the wget outgoing ip address is different in the two examples is due to DNS resolution on the cdn provider that adorama are providing

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