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Do not expose server room directory by default

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Prompted by: https://matrix.org/blog/2019/11/09/avoiding-unwelcome-visitors-on-private-matrix-servers

This is a bit controversial, because.. the Synapse default remains open,
while the general advice (as per the blog post) is to make it more private.

I'm not sure exactly what kind of server people set up and whether they
want to make the room directory public. Our general goal is to favor
privacy and security when running personal (family & friends) and corporate
homeservers, both of which likely benefit from having a more secure default.
This commit is contained in:
Slavi Pantaleev 2019-11-10 08:48:42 +02:00
parent 50614f1bad
commit 2da40c729a
3 changed files with 23 additions and 2 deletions
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12
CHANGELOG.md
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@ -1,3 +1,15 @@
# 2019-11-10
## Tightened security around room directory publishing
As per this [advisory blog post](https://matrix.org/blog/2019/11/09/avoiding-unwelcome-visitors-on-private-matrix-servers), we've decided to change the default publishing rules for the Matrix room directory.
Our general goal is to favor privacy and security when running personal (family & friends) and corporate homeservers.
Both of these likely benefit from having a more secure default of **not showing the room directory without authentication** and **not publishing the room directory over federation**.
As with anything else, these new defaults can be overriden by changing the `matrix_synapse_allow_public_rooms_without_auth` and `matrix_synapse_allow_public_rooms_over_federation` variables, respectively.
# 2019-10-05
## Improved Postgres upgrading/importing

9
roles/matrix-synapse/defaults/main.yml
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@ -136,6 +136,15 @@ matrix_synapse_report_stats: false
# disabling this will decrease server load significantly.
matrix_synapse_use_presence: true
# Controls whether accessing the server's public rooms directory can be done without authentication.
# For private servers, you most likely wish to require authentication,
# unless you know what list of rooms you're publishing to the world and explicitly want to do it.
matrix_synapse_allow_public_rooms_without_auth: false
# Controls whether remote servers can fetch this server's public rooms directory via federation.
# For private servers, you most likely wish to forbid it.
matrix_synapse_allow_public_rooms_over_federation: false
# Controls whether people with access to the homeserver can register by themselves.
matrix_synapse_enable_registration: false

4
roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
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@ -48,12 +48,12 @@ use_presence: {{ matrix_synapse_use_presence|to_json }}
# If set to 'false', requires authentication to access the server's public rooms
# directory through the client API. Defaults to 'true'.
#
#allow_public_rooms_without_auth: false
allow_public_rooms_without_auth: {{ matrix_synapse_allow_public_rooms_without_auth|to_json }}
# If set to 'false', forbids any other homeserver to fetch the server's public
# rooms directory via federation. Defaults to 'true'.
#
#allow_public_rooms_over_federation: false
allow_public_rooms_over_federation: {{ matrix_synapse_allow_public_rooms_over_federation|to_json }}
# The default room version for newly created rooms.
#