tl;dr PDFs served by 4D v12 open in a new browser tab as expected from the same machine, and also from other machines on the LAN.
When accessed from a machine in the DMZ, not on the LAN, we can navigate the site, but the PDFs don't come over. It seems like the OS firewall or WebRoot antivirus tools may be blocking it on the DMZ machine, but we can't tell. Any ideas? details: We have several 4D v12.6 servers with web servers running and a single Apache server providing security, since v12 is too old for that. These are very simple web servers - they provide lists of PDFs, and you click on the links to open them. The backend is using Active4D. The same basic setup has been used for about 10 years. Until recently, this has worked well. Yesterday, the customer said the PDFs aren't opening for users logged in over the internet. When we test, if we run a browser inside the LAN and connect directly to the 4D server, it works fine. If we run a browser on the proxy machine in the DMZ, we can connect directly to the LAN 4D web server and use the site, but the PDFs fail to load. We get the same behavior connecting over the internet with the Apache proxy in the middle. There is an error message in the browser Console panel: "Resource interpreted as Document but transferred with MIME type application/pdf" The link on the web page looks like this: <a href="/docs/GPB-Auto%20%5B1%5D/Aixen%20International%20S. A%20%5B6%5D/Statements/September-2016%20Account%20Statement%20-%20Axien%20International%20S.A..pdf" target="_blank">Account Statement - Axien International S.A.</a> Occasionally the PDF makes it through. We've tried changing the target attribute so it downloads instead, but if the file comes down, it is corrupted and unreadable. We get the same behavior with Chrome, Firefox, IE, and Edge. In all cases, the web site works and behaves normally except for accessing the PDFs. It seems there is something about the proxy server machine that is causing the problem. Maybe an OS update that silently changed some security settings, or a tool that is installed on the machine called WebRoot. Thanks! Jim Hays ********************************************************************** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************
