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https://issues.apache.org/jira/browse/DISPATCH-1067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16547068#comment-16547068
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ASF GitHub Bot commented on DISPATCH-1067:
------------------------------------------
Github user jenmalloy commented on a diff in the pull request:
https://github.com/apache/qpid-dispatch/pull/343#discussion_r203152559
--- Diff: docs/books/user-guide/configuration-security.adoc ---
@@ -442,290 +442,367 @@ For more information about these attributes, see
xref:adding-sasl-authentication
== Authorizing Access to Messaging Resources
-You can restrict the number of user connections, and control access to
AMQP messaging resources by configuring _policies_.
+You can configure _policies_ to secure messaging resources in your
messaging environment. Policies ensure that only authorized users can access
messaging endpoints through the router network, and that the resources on those
endpoints are used in an authorized way.
-=== Types of Policies
-
-You can configure two different types of policies: _global policies_ and
_vhost policies_.
+{RouterName} provides the following types of policies:
Global policies::
-Settings for the router. A global policy defines the maximum number of
incoming user connections for the router (across all vhost policies), and
defines how the router should use vhost policies.
+Settings for the router. A global policy defines the maximum number of
incoming user connections for the router (across all messaging endpoints), and
defines how the router should use vhost policies.
Vhost policies::
-Connection and AMQP resource limits for a messaging endpoint (called an
AMQP virtual host, or _vhost_). A vhost policy defines what a client can access
on a messaging endpoint over a particular connection.
-+
-[NOTE]
-====
-A vhost is typically the name of the host to which the client connection
is directed. For example, if a client application opens a connection to the
`amqp://mybroker.example.com:5672/queue01` URL, the vhost would be
`mybroker.example.com`.
-====
+Connection and AMQP resource limits for a messaging endpoint (called an
AMQP virtual host, or vhost). A vhost policy defines what a client can access
on a messaging endpoint over a particular connection.
The resource limits defined in global and vhost policies are applied to
user connections only. The limits do not affect inter-router connections or
router connections that are outbound to waypoints.
-=== How {RouterName} Applies Policies
+=== How {RouterName} Enforces Connection and Resource Limits
-{RouterName} uses both global and vhost policies to determine whether to
permit a connection, and if it is permitted, to apply the appropriate resource
limits.
+{RouterName} uses policies to determine whether to permit a connection,
and if it is permitted, to apply the appropriate resource limits.
When a client creates a connection to the router, the router first
determines whether to allow or deny the connection. This decision is based on
the following criteria:
-* Whether the connection will exceed the router's global connection limit
(defined in the global policy)
-* Whether the connection will exceed the vhost's connection limits
(defined in the vhost policy that matches the host to which the connection is
directed)
+* Whether the connection will exceed the router’s global connection limit
(defined in the global policy)
-If the connection is allowed, the router assigns the user (the
authenticated user name from the connection) to a user group, and enforces the
user group's resource limits for the lifetime of the connection.
+* Whether the connection will exceed the vhost’s connection limits
(defined in the vhost policy that matches the host to which the connection is
directed)
-=== Configuring Global Policies
+If the connection is allowed, the router assigns the user (the
authenticated user name from the connection) to a user group, and enforces the
user group’s resource limits for the lifetime of the connection.
-You can set the incoming connection limit for the router and define how it
should use vhost policies by configuring a global policy.
+=== Setting Global Connection Limits
+
+You can set the incoming connection limit for the router. This limit
defines the total number of concurrent client connections that can be open for
this router.
.Procedure
-* In the router configuration file, add a `policy` section.
+* In the router configuration file, add a `policy` section and set the
`maxConnections`.
+
--
[options="nowrap",subs="+quotes"]
----
-policy = {
- maxConnections: 10000 // <1>
- enableVhostPolicy: true // <2>
- policyDir: /etc/qpid-dispatch/policies/ // <3>
- defaultVhost: $default // <4>
+policy {
+ maxConnections: 10000
}
----
-<1> The maximum number of concurrent client connections allowed for this
router. This limit is always enforced, even if no other policy settings have
been defined. The limit is applied to all incoming connections regardless of
remote host, authenticated user, or targeted vhost. The default (and the
maximum) value is `65535`.
+`maxConnections`::
+This limit is always enforced, even if no other policy settings have been
defined. The limit is applied to all incoming connections regardless of remote
host, authenticated user, or targeted vhost. The default (and the maximum)
value is `65535`.
+--
+
+=== Setting Connection and Resource Limits for Messaging Endpoints
+
+You can define the connection limit and AMQP resource limits for a
messaging endpoint by configuring a _vhost policy_. Vhost policies define what
resources clients are permitted to access on a messaging endpoint over a
particular connection.
-<2> Enables the router to enforce the connection denials and resource
limits defined in the configured vhost policies. The default is `false`, which
means that the router will not enforce any vhost policies.
-+
[NOTE]
====
-Setting `enableVhostPolicy` to `false` improves the router's performance.
+A vhost is typically the name of the host to which the client connection
is directed. For example, if a client application opens a connection to the
`amqp://mybroker.example.com:5672/queue01` URL, the vhost would be
`mybroker.example.com`.
====
-<3> The absolute path to a directory that holds vhost policy definition
files in JSON format (`*.json`). The router processes all of the vhost policies
in each JSON file that is in this directory. For more information, see
xref:configuring-vhost-policies-json[].
-
-<4> The name of the default vhost policy. This policy rule set is applied
to a connection for which a vhost policy has not otherwise been configured.
Processing for the default vhost is enabled by default and set to select vhost
'$default'. To disable default vhost processing set defaultVhost to blank or do
not define a vhost named '$default'.
---
+You can create vhost policies using either of the following methods:
-=== Configuring Vhost Policies
+* xref:configuring-vhost-policies-router[Configure vhost policies directly
in the router configuration file]
+* xref:configuring-vhost-policies-json[Configure vhost policies as JSON
files]
-You configure vhost policies to define the connection limits and AMQP
resource limits for a messaging endpoint.
+[id='enabling-vhost-policies']
+==== Enabling Vhost Policies
-A vhost policy consists of the following:
+You must enable the router to use vhost policies before you can create the
policies.
-* Connection limits
-+
-These limits control the number of users that can be connected to the
vhost simultaneously.
+.Procedure
-* User groups
+* In the router configuration file, add a `policy` section if one does not
exist, and enable vhost policies for the router.
+
-A user group defines the messaging resources that the group members are
permitted to access. Each user group defines the following:
-
-** A set of users that can connect to the vhost (the group members)
-** The remote hosts from which the group members may connect to the router
network
-** The AMQP resources that the group members are permitted to access on
the vhost
+--
+[options="nowrap",subs="+quotes"]
+----
+policy {
+ ...
+ enableVhostPolicy: true
+ enableVhostNamePatterns: true | false
+ defaultVhost: $default
+}
+----
+`enableVhostPolicy`::
+Enables the router to enforce the connection denials and resource limits
defined in the configured vhost policies. The default is `false`, which means
that the router will not enforce any vhost policies.
-You can use the following methods to configure vhost policies:
+`enableVhostNamePatterns`::
+Enables pattern matching for vhost hostnames. If set to `true`, you can
use wildcards to specify a range of hostnames for a vhost. If set to `false`,
vhost hostnames are treated as literal strings. This means that you must
specify the exact hostname for each vhost. The default is `false`.
-* xref:configuring-vhost-policies-router[Configure vhost policies directly
in the router configuration file]
-* xref:configuring-vhost-policies-json[Configure vhost policies as JSON
files]
+`defaultVhost`::
+The name of the default vhost policy, which is applied to any connection
for which a vhost policy has not been configured. The default is `$default`. If
`defaultVhost` is not defined, then default vhost processing is disabled.
+--
[id='configuring-vhost-policies-router']
==== Configuring Vhost Policies in the Router Configuration File
-You can configure vhost policies in the router configuration file by
configuring `vhost` entities. However, if multiple routers in your router
network should be configured with the same vhost configuration, you will need
to add the `vhost` configuration to each router's configuration file.
+You can configure vhost policies in the router configuration file by
configuring `vhost` entities. However, if multiple routers in your router
network should be configured with the same vhost configuration, you will need
to add the vhost configuration to each router’s configuration file.
+
+.Prerequisites
+
+Vhost policies must be enabled for the router. For more information, see
xref:enabling-vhost-policies[].
.Procedure
-. In the router configuration file, add a `vhost` section and define the
connection limits for it.
+. Add a `vhost` section and define the connection limits for the messaging
endpoint.
+
--
The connection limits apply to all users that are connected to the vhost.
These limits control the number of users that can be connected simultaneously
to the vhost.
[options="nowrap",subs="+quotes"]
----
-vhost = {
- hostname: example.com // <1>
- maxConnections: 10000 // <2>
- maxConnectionsPerUser: 1000 // <3>
- maxConnectionsPerHost: 1000 // <4>
- allowUnknownUser: false // <5>
+vhost {
+ hostname: example.com
+ maxConnections: 10000
+ maxConnectionsPerUser: 100
+ maxConnectionsPerHost: 100
+ allowUnknownUser: true
...
}
----
+`hostname`::
+The literal hostname of the vhost (the messaging endpoint) or a pattern
that matches the vhost hostname. This vhost policy will be applied to any
client connection that is directed to the hostname that you specify. This name
must be unique; you can only have one vhost policy per hostname.
++
+If `enableVhostNamePatterns` is set to `true`, you can use wildcards to
specify a pattern that matches a range of hostnames. For more information, see
xref:pattern-matching-vhost-policy-hostnames[].
-<1> The host name of the vhost. This vhost policy will be applied to any
client connection that is directed to the hostname that you specify.
-
-<2> The global maximum number of concurrent client connections allowed for
this vhost. The default is `65535`.
+`maxConnections`::
+The global maximum number of concurrent client connections allowed for
this vhost. The default is 65535.
-<3> The maximum number of concurrent client connections allowed for any
user. The default is `65535`.
+`maxConnectionsPerUser`::
+The maximum number of concurrent client connections allowed for any user.
The default is 65535.
-<4> The maximum number of concurrent client connections allowed for any
remote host (the host from which the client is connecting). The default is
`65535`.
+`maxConnectionsPerHost`::
+The maximum number of concurrent client connections allowed for any remote
host (the host from which the client is connecting). The default is 65535.
-<5> Whether unknown users (users who are not members of a defined user
group) are allowed to connect to the vhost. Unknown users are assigned to the
`$default` user group and receive `$default` settings. The default is `false`,
which means that unknown users are not allowed.
+`allowUnknownUser`::
+Whether unknown users (users who are not members of a defined user group)
are allowed to connect to the vhost. Unknown users are assigned to the $default
user group and receive $default settings. The default is false, which means
that unknown users are not allowed.
--
-. In the `vhost` section, beneath the connection settings that you added,
add the necessary user groups.
+. In the `vhost` section, beneath the connection settings that you added,
add a `groups` entity to define the resource limits.
+
--
-A user group defines what messaging resources the members of the group are
allowed to access.
+You define resource limits by user group. A user group specifies the
messaging resources the members of the group are allowed to access.
+
+.User Groups in a Vhost Policy
+====
+This example shows three user groups: admin, developers, and $default:
[options="nowrap",subs="+quotes"]
----
vhost {
...
groups: {
- admin: { // <1>
- users: admin1, admin2 // <2>
- remoteHosts: 127.0.0.1, ::1 // <3>
- sources: * // <4>
- targets: * // <5>
- },
- ...
+ admin: {
+ users: admin1, admin2
+ remoteHosts: 127.0.0.1, ::1
+ sources: *
+ targets: *
+ }
+ developers: {
+ users: dev1, dev2, dev3
+ remoteHosts: *
+ sources: myqueue1, myqueue2
+ targets: myqueue1, myqueue2
+ }
+ $default: {
+ remoteHosts: *
+ allowDynamicSource: true,
+ sources: myqueue1, myqueue2
+ targets: myqueue1, myqueue2
+ }
}
}
----
+`users`::
+A list of authenticated users for this user group. Use commas to separate
multiple users. A user may belong to only one vhost user group.
-<1> The name of the user group.
-
-<2> A list of authenticated users for this user group. Use commas to
separate multiple users. A user may belong to only one vhost user group.
-
-<3> A list of remote hosts from which the users may connect. A host can be
a hostname, IP address, or IP address range. Use commas to separate multiple
hosts. To allow access from all remote hosts, specify a wildcard `*`. To deny
access from all remote hosts, leave this attribute blank.
+`remoteHosts`::
+A list of remote hosts from which the users may connect. A host can be a
hostname, IP address, or IP address range. Use commas to separate multiple
hosts. To allow access from all remote hosts, specify a wildcard `*`. To deny
access from all remote hosts, leave this attribute blank.
-<4> A list of AMQP source addresses from which users in this group may
receive messages. To specify multiple AMQP addresses, separate the addresses
with either a comma or a space. If you do not specify any addresses, users in
this group are not allowed to receive messages from any addresses.
-+
-You can use the substitution token `${user}` to specify an AMQP address
that contains a user's authenticated user name. This enables you to allow
access to resources specific to each user in the user group without having to
name each user individually. You can only specify the `${user}` token once in
an AMQP address name. If there are multiple tokens in an address, only the
leftmost token will be substituted.
-+
-You can use an asterisk (`*`) wildcard to match one or more characters in
an AMQP address. However, this wildcard is only recognized if it is the last
character in the address name.
-+
-.Allowing Access to All Addresses
-====
-[options="nowrap"]
-----
-sources: *
-----
-====
+`sources` | `sourcePattern`::
+A list of AMQP source addresses from which users in this group may receive
messages.
+
-.Restricting Access to All Addresses
-====
-[options="nowrap"]
-----
-sources:
-----
-====
+Use `sources` to specify one or more literal addresses. To specify
multiple addresses, use a comma-separated list. To prevent users in this group
from receiving messages from any addresses, leave this attribute blank. To
allow access to an address specific to a particular user, specify the `${user}`
token. For more information, see
xref:methods-for-specifying-vhost-policy-source-target-addresses[].
+
-.Allowing Access to Specific Addresses
-====
-[options="nowrap"]
-----
-sources: myaddress01, myaddress02, myaddress03
-----
-====
+Alternatively, you can use `sourcePattern` to match one or more addresses
that correspond to a pattern. A pattern is a sequence of words delimited by
either a `.` or `/` character. You can use wildcard characters to represent a
word. The `*` character matches exactly one word, and the `#` character
matches any sequence of zero or more words.
+
-.Allowing Access to User-Specific Addresses
-====
-This definition allows access to any address that meets any of the
following rules:
-
-* Starts with the prefix `tmp_` and ends with the user name
-* Starts with the prefix `temp` followed by any additional characters
-* Starts with the user name, is followed by `-home-`, and ends with any
additional characters
+To specify multiple address ranges, use a comma-separated list of address
patterns. For more information, see xref:router-address-pattern-matching[Router
Address Pattern Matching]. To allow access to address ranges that are specific
to a particular user, specify the `${user}` token. For more information, see
xref:methods-for-specifying-vhost-policy-source-target-addresses[].
-[options="nowrap"]
-----
-sources: tmp_${user}, temp*, ${user}-home-*
-----
+`targets` | `targetPattern`::
+A list of AMQP target addresses from which users in this group may send
messages. You can specify multiple AMQP addresses and use user name
substitution and address patterns the same way as with source addresses.
====
-
-<5> A list of AMQP target addresses from which users in this group may
send messages. You can specify multiple AMQP addresses and use user name
substitution and wildcards the same way as with source addresses.
--
-. If necessary, add any advanced user group settings to the vhost user
group.
+. If necessary, add any advanced user group settings to the vhost user
groups.
+
-The advanced user group settings enable you to define resource limits
based on the AMQP connection open, session begin, and link attach phases of the
connection. For more information, see
link:{qdrouterdConfManPageUrl}#_vhostUserGroupSettings[Vhost User Group
Settings^].
+The advanced user group settings enable you to define resource limits
based on the AMQP connection open, session begin, and link attach phases of the
connection. For more information, see
link:{qdrouterdConfManPageUrl}#_vhost[vhost^] in the `qdrouterd.conf` man page.
[id='configuring-vhost-policies-json']
==== Configuring Vhost Policies as JSON Files
As an alternative to using the router configuration file, you can
configure vhost policies in JSON files. If you have multiple routers that need
to share the same vhost configuration, you can put the vhost configuration JSON
files in a location accessible to each router, and then configure the routers
to apply the vhost policies defined in these JSON files.
+.Prerequisites
+
+* Vhost policies must be enabled for the router. For more information, see
xref:enabling-vhost-policies[].
+
.Procedure
-. Determine where to store the vhost policy JSON files.
+. In the router configuration file, specify the directory where the vhost
policy definition JSON files should be located.
--- End diff --
Change "should be" to "are" ?
> Doc improvements for router policies
> ------------------------------------
>
> Key: DISPATCH-1067
> URL: https://issues.apache.org/jira/browse/DISPATCH-1067
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 1.2.0
> Reporter: Ben Hardesty
> Assignee: Ben Hardesty
> Priority: Major
>
> The router policy doc needs to be updated to cover the following enhancements:
> * Patterns for policy hostnames (DISPATCH-990)
> * New policy config attributes (DISPATCH-976)
> * Policy username substitution improvements (DISPATCH-1011)
> * Allow vhost policies to be configured in the router configuration file
> (DISPATCH-1013)
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