How do i know which one of my mods conflict with my server?

[sodaddict]

I make servers from my friends, we download mods for the server now and then, but sometimes mods we download conflict with the server. And recently we just downloaded a bunch of mods for the server that the server doesn't even accept punch packet anymore.
How can i tell which mods conflict and which ones don't?

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[PhantOS]

Disable all nondefault addons and trial n error each one by reenabling each. Judging from the punch packet issue i'd say its an rtb-like server interface. Try disabling all rtb replacements like glass and such

[jes00]

Everyone is always blaming BL Glass even though it's usually not the problem >:|

[Scout31]

I don't think there's much any add-on could do to keep a connection from being established. I'm fairly certain the first place an add-on could come in to play is rejecting a connection, and Glass only does that in the latest beta, only when enabled by specific client mods which there are currently none of. Try posting a console.log, it could help, but the issue you're facing sounds more like a networking problem than anything.