IIS ARR Rewrite 502.3 Bad Gateway

If you happen to hit the err below, when rewriting to local server with ssl,

HTTP Error 502.3 - Bad Gateway

A security error occurred

Most likely causes:

  • The CGI application did not return a valid set of HTTP errors.
  • A server acting as a proxy or gateway was unable to process the request due to an error in a parent gateway.

Things you can try:

  • Use DebugDiag to troubleshoot the CGI application.
  • Determine if a proxy or gateway is responsible for this error.

try disabling some of the ssl security as specified here: https://docs.microsoft.com/en-us/iis/extensions/configuring-application-request-routing-arr/arr-support-added-for-winhttpoptionsecurityflags

reg.exe add "HKLM\SOFTWARE\Microsoft\IIS Extensions\Application Request Routing\Parameters" /v SecureConnectionIgnoreFlags /t REG_DWORD /d 0

and then set the value to 0x00003300

IIS ftp timed out

ftp: Can't connect to `x.x.x.x': Operation timed out

sc sidtype ftpsvc unrestricted
net stop ftpsvc & net start ftpsvc

IIS - multiple host aliases for the loopback adapter

Scenario: ARR listening on port 80 set to load balance multiple sites listening on different ports on local host

Problem: Server Farm will refuse to add multiple localhost addresses - it does not use port number to differentiate between host aliases

Solution: locate the Windows\System32\drivers\etc\hosts file and add for example the following:	localhost1	localhost2	localhost3	localhost4

This will make the above aliases point to localhost


Just a couple of videos featuring our new geoCMS platform released a couple of months ago. This is a web GIS based application designed to easily create, manage and publish spatial data.

Currently there are three modules available: geooportal, geoCMS and a mobile application. The first two work together as a spatial data publishing tool. One can create and manage vector layers, layer groups and maps along with the tools that are available for each map. The standard WMS or XYZ raster data sources can also be easily consumed by the geoportal.

The mobile application is used for outdoor data collection - it is also a map centric app that drastically improves the efficiency of the outdoor data collection and managment process.

All modules exchange data in real time. When there is no Internet access, the mobile device stores the data localy and then synchronises it with the database as needed.

A live example may be found here: http://cyklisci.maphive.co/. This is an application powered by our platform - this particular one focuses on hGIS, old maps and such.

Another example: http://cyklisci.maphive.co/. This one focusing on collecting data from geoportal users.

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