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litespeed_wiki:config:enable_quic [2018/09/04 18:51] Eric Leu [Checklist] |
litespeed_wiki:config:enable_quic [2019/01/24 17:55] qtwrk [How to Open UDP Port 433 at the Firewall] |
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| - | ===== How to Open UDP Port 433 at the Firewall ===== | + | ===== How to Open UDP Port 443 at the Firewall ===== |
| [[https://en.wikipedia.org/wiki/QUIC|QUIC]] runs a stream-multiplexing protocol over Transport Layer Security (TLS) on top of UDP instead of TCP. Be sure you've enabled the port with both TCP //and// UDP. Most of the time, TCP 443 is enabled. | [[https://en.wikipedia.org/wiki/QUIC|QUIC]] runs a stream-multiplexing protocol over Transport Layer Security (TLS) on top of UDP instead of TCP. Be sure you've enabled the port with both TCP //and// UDP. Most of the time, TCP 443 is enabled. | ||
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| Looking to //disable// QUIC, or enable it at only the Virtual Host, or Listener Level? See [[litespeed_wiki:config:disable_quic|How to Disable QUIC on LiteSpeed Web Server]]. | Looking to //disable// QUIC, or enable it at only the Virtual Host, or Listener Level? See [[litespeed_wiki:config:disable_quic|How to Disable QUIC on LiteSpeed Web Server]]. | ||
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| + | ===== Troubleshooting ===== | ||
| + | |||
| + | ==== CloudFlare doesn't support QUIC yet ==== | ||
| + | Please keep in mind that CloudFlare doesn't support QUIC yet at the time of this writing. If you are behind CloudFlare, please disable it before testing/using QUIC. | ||
| + | |||
| + | ==== Possibly Google Chrome has not enabled QUIC by default ==== | ||
| + | At some point we noticed that Google Chrome decided to temporarily disable QUIC by default. Some users explicitly have to enable QUIC under ''<nowiki>chrome://flags</nowiki>''. This may not be the case for you, but it's a good idea to check whether QUIC is enabled in Chrome. | ||
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| + | ==== Possibly bad cached SSL certificates ==== | ||
| + | Sometimes, especially when the site in question has encountered an SSL/TLS error before, Chrome will save the certificate in cache and cause QUIC to be unable to establish a connection. In this case, it can simply be fixed by clearing the browser cache. | ||