Community Novice

Does Canvas try to ping before LTI installation or launch?

We have several LTI tools that work fine on one server.  Recently I've tried to install them on another server that is behind a firewall.  When I use the URL form and click "Submit," nothing happens.  When I install with the "Paste XML" method, it installs, but then when I launch the tool I get a 500 error.

It looks like Canvas is trying to ping the URLs before install and launch.  I understand the security rationale, and I can request that we open ports on that server to the Canvas subnet, but I would like to confirm that this is what is happening.

Thanks in advance!

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