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@@ -1,10 +1,12 @@
 # Synapse-Ubuntu-ZFS
 Server configurations for Ubuntu 22.04 running Synapse
 
-This configuration does not include a lot of hardening configurations, as most of those are maintained [here](https://github.com/tommytran732/Linux-Setup-Scripts/blob/main/Ubuntu-22.04-Server.sh).
+This configuration does not include some hardening configurations, as those are maintained [here](https://github.com/tommytran732/Linux-Setup-Scripts/blob/main/Ubuntu-22.04-Server.sh).
 
-**Note**:
+**Notes**:
 - snap ufw blocks Docker by default. ArcticFoxes's Matrix server uses .deb ufw instead.
 - A lot of these configuration files use ArcticFoxes's domain. If you are adopting this to your own system, make sure that you replace them.
 - The Certbot-OCSP-Fetcher script can be found [here](https://github.com/GrapheneOS/infrastructure/blob/main/certbot-ocsp-fetcher)
+- Systemd overrides for NGINX and SSHD services are based on [GrapheneOS's configurations](https://github.com/GrapheneOS/infrastructure/tree/main/systemd/system).
+- Systemd override for Synapse are based on Arch Linux's [matrix-synapse](https://gitlab.archlinux.org/archlinux/packaging/packages/matrix-synapse/-/blob/main/override-hardened.conf?ref_type=heads) package.
 - The repolists of PostgreSQL and Docker have been modified so that they read GPG keys from `/usr/share/keyring` by default. Make sure that when you follow upstream's documentation on adding their GPG keys, you adjust the location. For PostgreSQL's GPG key, run `curl https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmor | sudo tee /usr/share/keyrings/postgresql-debian-repo.gpg >/dev/null`