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Update Trellis docs for HTTP/3 support #567

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Merged
retlehs merged 2 commits into from
Mar 11, 2026
Merged

Update Trellis docs for HTTP/3 support #567

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eea473a
Update Trellis docs for HTTP/3 support
retlehs Mar 7, 2026
d1d77e4
Add HTTP/3 UDP port 443 firewall note
retlehs Mar 7, 2026
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4 changes: 2 additions & 2 deletions trellis/installation.md
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---
date_modified: 2024-09-11 10:00
date_modified: 2026-03-06 13:00
date_published: 2015-10-15 12:20
description: Install Trellis for WordPress projects. Complete setup instructions covering requirements, dependencies, project initialization, and initial configuration.
title: Installing Trellis for WordPress
Expand Down Expand Up @@ -90,7 +90,7 @@ with a single command thanks to trellis-cli too.
Trellis provisions a base Ubuntu 24.04 server by installing and configuring the following software:

* PHP 8.3+
* Nginx (including HTTP2/ and optional FastCGI micro-caching)
* Nginx (including HTTP/2, HTTP/3, and optional FastCGI micro-caching)
* MariaDB (a drop-in MySQL replacement)
* SSL support (scores an A+ on the [Qualys SSL Server Test](https://www.ssllabs.com/ssltest/))
* Let's Encrypt for free SSL certificates
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6 changes: 4 additions & 2 deletions trellis/ssl.md
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---
date_modified: 2025-11-24 13:00
date_modified: 2026-03-06 13:00
date_published: 2015-09-06 07:42
description: Enable HTTPS in Trellis with automatic Let's Encrypt certificates, manually provided SSL certificates, or self-signed certificates for local development.
title: SSL Certificates in Trellis
Expand Down Expand Up @@ -367,12 +367,14 @@ example.com:

Our HTTPS implementation uses all performance optimizations possible to ensure your sites remain fast despite the small overhead of SSL. This includes the following features:

- HTTP/2 support (fallback to HTTP/1.1 for older browsers)
- HTTP/3 support with QUIC (fallback to HTTP/2 and HTTP/1.1 for older browsers)
- SSL session cache
- OCSP stapling
- 1400 byte TLS records
- Longer keepalives

HTTP/3 requires UDP port 443 to be open. If you have a cloud or hardware firewall in front of your server (eg: AWS security groups, DigitalOcean cloud firewalls), ensure it allows UDP/443 inbound traffic.

See [Is TLS Fast Yet?](https://istlsfastyet.com/) for more information on fast TLS/SSL.

## Browser support
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