Realms blocked by Internet Blocker (Integard)

My brother and I have been trying to play Minecraft together for a long time, but have never been successful. We have always run into some error message, no matter what we tried. I have recently purchased a PC that does not yet have our family blocker software (Integard) installed on it. On it, I found that I was finally able to connect to Minecraft Realms. However, my brother still cannot.
Because of this, we believe that the problem lies with Integard, the Internet Blocker application installed on our computers (except mine). To prove this, our parents temporarily disabled Integard, and he was able to successfully connect to the Realm. However, when the blocker was renabled, he again hit the Connection Blocked error message.
Does anyone know how to allow Minecraft through Integard, or a similar blocker? There is a list of allowed programs, which Minecraft is now on, but I'm not sure if this will work. Let me know if anyone has run into this before, or knows how to fix it. Also, is there a port number that Minecraft Realms runs through? If so, I could probably let it through. Thanks!
Best Answer
I personally have not used Integard and cannot find resources for it online. However I can provide details for how Minecraft Realms connects and where the problem might be.
Based on the screenshots I can find, you should be able to configure Integard to not block Minecraft. You may, however, run into issues specifically that Minecraft is run under the java
process. I would recommend trying to configure Minecraft to have no internet restrictions.
---edit---
Here is a screenshot showing how I configure my Firewall to not block Minecraft. I don't know wether this will help but I figured I'd attach it.
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