Mozilla used to run a free STUN service, but it looks like they killed it after it after it was abused to conduct certain attacks[0]. [0]: https://bugzilla.moz

Mozilla used to run a free STUN service, but it looks like they killed it after it after it was abused to conduct certain attacks[0]. [0]: https://bugzilla.mozilla.org/show_bug.cgi?id=1324520 https://bugzilla.mozilla.org/show_bug.cgi?id=1324520