Is there a way to bypass the school firewall?

[BlockoBlocko]

Last year, I used to play on Pecon7's Boss Battles in school, and it worked fine.

I don't know why, but now, I can't join servers. (It keeps saying Sending challenge request)

Is there anyway to bypass the firewall that my school uses?

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[Tertahedron]

Don't post this, you can get banned.