I have a teacher here who is trying to run the AQA Summer 2012 DRS e-marker software on her laptop here but gets an Error: 504 message when attempting to log in.
Their website states:However this appears to log in fine from my computer so am guessing that there's some authentication/filtering taking place and am trying to find out what needs modifying to allow this to work. Windows Firewall is switched off on the local computer and the application only uses http/https protocols so the upstream firewall won't be an issue.
Q.Can I use a PC at school? A: Not recommended. We have come up against a number of issues relating to security and firewalls in schools, which have caused problems and considerable delays in marking in previous series.
I've installed Wireshark and have filtered http traffic to find an entry near the bottom for "HTTP/1.0 504 Gateway Time-out (text/html)" but am a little unsure on how to troubleshoot applications using Wireshark. I was hoping I could set this to only capture traffic for a specified application.
I've added the domain that's showing in Wireshark to my by-pass list for authentication within my proxy server software and also added the url shown to the filtering by-pass list but doesn't appear to have made a difference.
Has anyone else used this software and faced similar issues?
Hmmm. Strangely changing the computer Winhttp settings to the upstream proxy and then back to ours appears to have got this working again!! One of those things I guess!!
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