mirror of https://github.com/zulip/zulip.git
128 lines
6.1 KiB
Markdown
128 lines
6.1 KiB
Markdown
# Stream privacy settings
|
|
|
|
Streams are similar to chat rooms, IRC channels, or email lists in that they
|
|
determine who receives a message. Zulip supports a few types of streams:
|
|
|
|
* **Public** (<i class="zulip-icon zulip-icon-hashtag"></i>):
|
|
Members can join and view the complete message history.
|
|
Public streams are visible to guest users only if they are
|
|
subscribed (exactly like private streams with shared history).
|
|
|
|
* **Private** (<i class="zulip-icon zulip-icon-lock"></i>):
|
|
New subscribers must be added by an existing subscriber. Only subscribers
|
|
and organization administrators can see the stream's name and description,
|
|
and only subscribers can view topics and messages with the stream:
|
|
* In **private streams with shared history**, new subscribers can
|
|
access the stream's full message history.
|
|
* In **private streams with protected history**, new subscribers
|
|
can only see messages sent after they join.
|
|
|
|
* [**Web-public**](/help/public-access-option) (<i class="zulip-icon
|
|
zulip-icon-globe"></i>): Members can join (guests must be invited by a
|
|
subscriber). Anyone on the Internet can view complete message history without
|
|
creating an account.
|
|
|
|
## Privacy model for private streams
|
|
|
|
At a high level:
|
|
|
|
* Organization owners and administrators can see and modify most
|
|
aspects of a private stream, including the membership and estimated
|
|
traffic. Owners and administrators generally cannot see private
|
|
stream messages or do things that would give them access to private
|
|
stream messages, like adding new subscribers or changing the stream
|
|
privacy settings.
|
|
|
|
* [Organization members and moderators](/help/roles-and-permissions)
|
|
cannot easily see which private streams exist, or interact with them
|
|
in any way until they are added. Given a stream name, they can
|
|
figure out whether a stream with that name exists, but cannot see
|
|
any other details about the stream.
|
|
|
|
* From the perspective of a guest, all streams are private streams,
|
|
and they additionally can't add other members to the streams they
|
|
are subscribed to.
|
|
|
|
There are two situations in which an organization owner or
|
|
administrator can access private stream messages:
|
|
|
|
* Via some types of [data export](/help/export-your-organization).
|
|
|
|
* Owners and administrators can change the ownership of a bot. If a
|
|
bot is subscribed to a private stream, then an administrator can get
|
|
access to that stream by taking control of the bot, though the
|
|
access will be limited to what the bot can do. (E.g. incoming
|
|
webhook bots cannot read messages.)
|
|
|
|
## Detailed permissions
|
|
|
|
### Public streams
|
|
|
|
<div class="centered_table"></div>
|
|
| | Owners and admins | Moderators | Members | Guests
|
|
|--- |--- | |--- |---
|
|
| View stream name | ✔ | ✔ | ✔ | ◾
|
|
| Join | ✔ | ✔ | ✔ |
|
|
| Unsubscribe | ◾ | ◾ | ◾ | ◾
|
|
| Add others | ✔ | ✶ | ✶ |
|
|
| Remove others | ✔ | ✶ | ✶ | ✶
|
|
| See subscriber list | ✔ | ✔ | ✔ | ◾
|
|
| See full history | ✔ | ✔ | ✔ | ◾
|
|
| See estimated traffic | ✔ | ✔ | ✔ | ◾
|
|
| Post | ✔ | ✶ | ✶ | ✶
|
|
| Change the privacy | ✔ | | |
|
|
| Rename | ✔ | | |
|
|
| Edit the description | ✔ | | |
|
|
| Delete | ✔ | | |
|
|
|
|
<span class="legend_symbol">✔</span><span class="legend_label">Always</span>
|
|
|
|
<span class="legend_symbol">◾</span><span class="legend_label">If subscribed to the stream</span>
|
|
|
|
<span class="legend_symbol">✶</span><span class="legend_label">
|
|
Configurable. See [Stream posting policy](/help/stream-sending-policy),
|
|
[Configure who can add users][add-users], and
|
|
[Configure who can remove users][remove-users]
|
|
for details.
|
|
</span>
|
|
|
|
### Private streams
|
|
|
|
<div class="centered_table"></div>
|
|
| | Owners and admins | Moderators | Members | Guests
|
|
|--- |--- | |--- |---
|
|
| View stream name | ✔ | ◾ | ◾ | ◾
|
|
| Join | | | |
|
|
| Unsubscribe | ◾ | ◾ | ◾ | ◾
|
|
| Add others | ◾ | ✶ | ✶ |
|
|
| Remove others | ✔ | ✶ | ✶ | ✶
|
|
| See subscriber list | ✔ | ◾ | ◾ | ◾
|
|
| See full history | ✶ | ✶ | ✶ | ✶
|
|
| See estimated traffic | ✔ | ◾ | ◾ | ◾
|
|
| Post | ◾ | ✶ | ✶ | ✶
|
|
| Change the privacy | ◾ | | |
|
|
| Rename | ✔ | | |
|
|
| Edit the description | ✔ | | |
|
|
| Delete | ✔ | | |
|
|
|
|
<span class="legend_symbol">✔</span><span class="legend_label">Always</span>
|
|
|
|
<span class="legend_symbol">◾</span><span class="legend_label">If subscribed to the stream</span>
|
|
|
|
<span class="legend_symbol">✶</span><span class="legend_label">
|
|
Configurable, but at minimum must be subscribed to the stream.
|
|
See [Stream posting policy](/help/stream-sending-policy),
|
|
[Configure who can add users][add-users], and
|
|
[Configure who can remove users][remove-users]
|
|
for details.
|
|
</span>
|
|
|
|
## Related articles
|
|
|
|
* [Roles and permissions](/help/roles-and-permissions)
|
|
* [Stream sending policy](/help/stream-sending-policy)
|
|
* [Web-public streams](/help/public-access-option)
|
|
|
|
[add-users]: /help/configure-who-can-invite-to-streams#configure-who-can-add-users
|
|
[remove-users]: /help/configure-who-can-invite-to-streams#configure-who-can-remove-users
|