How to link issues from one jira server to another when one of them cannot access the another?

Question

I have two Jira instances: private one and public one. The public one is running on a DMZ and can be accesed from the internet but it cannot access the private instance.

People need to be able to link issues from one to another.

The common use case is: someone detects that a problem reported on public instance is real and it want to add it to the private tracker in order to solve it.

Both issuses need to be linked one to another.

How can I achieve this?

Sorin Sbarnea ( · Answer

Currently I do have a plugin on that used to work like this: you pick clone on the external instance and it will call, using user browser, the internal instance for importing or linking the issue from the pubic instance. As it makes sense, the private instance can access the public one, but not the other way arround.

The problem: the plugin is not even v2 compatible and is very hard to configure (hardcoded projects,...)

Thomas Schlegel · Answer

there is said, what is required  to link two jira instances. If the requirements cannot be fulfilled, the Jira Instances cannot be linked.

I think the only thing you can do then is create a custom field on both sides and insert the URL to the other issue manually, but maybe someone else has a better idea.

Sorin Sbarnea ( · Answer

The wikipage contains "0" information regarding having jira on different networks. It assumes that each instance can contact the other, which in real life is not the case.