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NAPALM ACL
==========
Generate and load ACL (firewall) configuration on network devices.
.. versionadded:: 2017.7.0
:codeauthor: Mircea Ulinic <mircea@cloudflare.com>
:maturity: new
:depends: capirca, napalm
:platform: unix
Dependencies
------------
The firewall configuration is generated by Capirca_.
.. _Capirca: https://github.com/google/capirca
To install Capirca, execute: ``pip install capirca``.
To be able to load configuration on network devices,
it requires NAPALM_ library to be installed: ``pip install napalm``.
Please check Installation_ for complete details.
.. _NAPALM: https://napalm.readthedocs.io
.. _Installation: https://napalm.readthedocs.io/en/latest/installation.html
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This module requires both NAPALM and Capirca.
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Given the following NAPALM grains, we can determine the Capirca platform name:
- vendor
- device model
- operating system
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Generate and load the configuration of a policy term.
filter_name
The name of the policy filter.
term_name
The name of the term.
filter_options
Additional filter options. These options are platform-specific.
See the complete list of options_.
.. _options: https://github.com/google/capirca/wiki/Policy-format#header-section
pillar_key: ``acl``
The key in the pillar containing the default attributes values. Default: ``acl``.
If the pillar contains the following structure:
.. code-block:: yaml
firewall:
- my-filter:
terms:
- my-term:
source_port: 1234
source_address:
- 1.2.3.4/32
- 5.6.7.8/32
The ``pillar_key`` field would be specified as ``firewall``.
pillarenv
Query the master to generate fresh pillar data on the fly,
specifically from the requested pillar environment.
saltenv
Included only for compatibility with
:conf_minion:`pillarenv_from_saltenv`, and is otherwise ignored.
merge_pillar: ``True``
Merge the CLI variables with the pillar. Default: ``True``.
The properties specified through the CLI have higher priority than the pillar.
revision_id
Add a comment in the term config having the description for the changes applied.
revision_no
The revision count.
revision_date: ``True``
Boolean flag: display the date when the term configuration was generated. Default: ``True``.
revision_date_format: ``%Y/%m/%d``
The date format to be used when generating the perforce data. Default: ``%Y/%m/%d`` (<year>/<month>/<day>).
test: ``False``
Dry run? If set as ``True``, will apply the config, discard and return the changes.
Default: ``False`` and will commit the changes on the device.
commit: ``True``
Commit? Default: ``True``.
debug: ``False``
Debug mode. Will insert a new key under the output dictionary,
as ``loaded_config`` containing the raw configuration loaded on the device.
source_service
A special service to choose from. This is a helper so the user is able to
select a source just using the name, instead of specifying a source_port and protocol.
As this module is available on Unix platforms only,
it reads the IANA_ port assignment from /etc/services.
If the user requires additional shortcuts to be referenced, they can add entries under /etc/services,
which can be managed using the :mod:`file state <salt.states.file>`.
.. _IANA: http://www.iana.org/assignments/port-numbers
destination_service
A special service to choose from. This is a helper so the user is able to
select a source just using the name, instead of specifying a destination_port and protocol.
Allows the same options as ``source_service``.
term_fields
Term attributes. To see what fields are supported, please consult the
list of supported keywords_. Some platforms have a few other optional_
keywords.
.. _keywords: https://github.com/google/capirca/wiki/Policy-format#keywords
.. _optional: https://github.com/google/capirca/wiki/Policy-format#optionally-supported-keywords
.. note::
The following fields are accepted (some being platform-specific):
- action
- address
- address_exclude
- comment
- counter
- expiration
- destination_address
- destination_address_exclude
- destination_port
- destination_prefix
- forwarding_class
- forwarding_class_except
- logging
- log_name
- loss_priority
- option
- policer
- port
- precedence
- principals
- protocol
- protocol_except
- qos
- pan_application
- routing_instance
- source_address
- source_address_exclude
- source_port
- source_prefix
- verbatim
- packet_length
- fragment_offset
- hop_limit
- icmp_type
- ether_type
- traffic_class_count
- traffic_type
- translated
- dscp_set
- dscp_match
- dscp_except
- next_ip
- flexible_match_range
- source_prefix_except
- destination_prefix_except
- vpn
- source_tag
- destination_tag
- source_interface
- destination_interface
- flattened
- flattened_addr
- flattened_saddr
- flattened_daddr
- priority
.. note::
The following fields can be also a single value and a list of values:
- action
- address
- address_exclude
- comment
- destination_address
- destination_address_exclude
- destination_port
- destination_prefix
- forwarding_class
- forwarding_class_except
- logging
- option
- port
- precedence
- principals
- protocol
- protocol_except
- pan_application
- source_address
- source_address_exclude
- source_port
- source_prefix
- verbatim
- icmp_type
- ether_type
- traffic_type
- dscp_match
- dscp_except
- flexible_match_range
- source_prefix_except
- destination_prefix_except
- source_tag
- destination_tag
- source_service
- destination_service
Example: ``destination_address`` can be either defined as:
.. code-block:: yaml
destination_address: 172.17.17.1/24
or as a list of destination IP addresses:
.. code-block:: yaml
destination_address:
- 172.17.17.1/24
- 172.17.19.1/24
or a list of services to be matched:
.. code-block:: yaml
source_service:
- ntp
- snmp
- ldap
- bgpd
.. note::
The port fields ``source_port`` and ``destination_port`` can be used as above to select either
a single value, either a list of values, but also they can select port ranges. Example:
.. code-block:: yaml
source_port:
- - 1000
- 2000
- - 3000
- 4000
With the configuration above, the user is able to select the 1000-2000 and 3000-4000 source port ranges.
The output is a dictionary having the same form as :mod:`net.load_config <salt.modules.napalm_network.load_config>`.
CLI Example:
.. code-block:: bash
salt 'edge01.bjm01' netacl.load_term_config filter-name term-name source_address=1.2.3.4 destination_address=5.6.7.8 action=accept test=True debug=True
Output Example:
.. code-block:: jinja
edge01.bjm01:
----------
already_configured:
False
comment:
Configuration discarded.
diff:
[edit firewall]
+ family inet {
+ /*
+ ** $Date: 2017/03/22 $
+ **
+ */
+ filter filter-name {
+ interface-specific;
+ term term-name {
+ from {
+ source-address {
+ 1.2.3.4/32;
+ }
+ destination-address {
+ 5.6.7.8/32;
+ }
+ }
+ then accept;
+ }
+ }
+ }
loaded_config:
firewall {
family inet {
replace:
/*
** $Date: 2017/03/22 $
**
*/
filter filter-name {
interface-specific;
term term-name {
from {
source-address {
1.2.3.4/32;
}
destination-address {
5.6.7.8/32;
}
}
then accept;
}
}
}
}
result:
True
u capirca.get_term_configt filter_optionst
pillar_keyt pillarenvt saltenvt merge_pillart revision_idt revision_not
revision_datet revision_date_formatt source_servicet destination_serviceu net.load_configt textt testt committ debugt inherit_napalm_device( R t __salt__t
napalm_device( t filter_namet term_nameR R R R R R R R R R R! R" R R t term_fieldst platformt term_config( ( s> /usr/lib/python2.7/site-packages/salt/modules/napalm_netacl.pyt load_term_configs s0 � ;
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Generate and load the configuration of a policy filter.
.. note::
The order of the terms is very important. The configuration loaded
on the device respects the order defined in the ``terms`` and/or
inside the pillar.
When merging the ``terms`` with the pillar data, consider the
``prepend`` argument to make sure the order is correct!
filter_name
The name of the policy filter.
filter_options
Additional filter options. These options are platform-specific.
See the complete list of options_.
.. _options: https://github.com/google/capirca/wiki/Policy-format#header-section
terms
List of terms for this policy filter.
If not specified or empty, will try to load the configuration from the pillar,
unless ``merge_pillar`` is set as ``False``.
prepend: ``True``
When ``merge_pillar`` is set as ``True``, the final list of terms generated by merging
the terms from ``terms`` with those defined in the pillar (if any): new terms are prepended
at the beginning, while existing ones will preserve the position. To add the new terms
at the end of the list, set this argument to ``False``.
pillar_key: ``acl``
The key in the pillar containing the default attributes values. Default: ``acl``.
pillarenv
Query the master to generate fresh pillar data on the fly,
specifically from the requested pillar environment.
saltenv
Included only for compatibility with
:conf_minion:`pillarenv_from_saltenv`, and is otherwise ignored.
merge_pillar: ``True``
Merge the CLI variables with the pillar. Default: ``True``.
The merge logic depends on the ``prepend`` argument and
the CLI has higher priority than the pillar.
only_lower_merge: ``False``
Specify if it should merge only the terms fields. Otherwise it will try
to merge also filters fields. Default: ``False``.
This option requires ``merge_pillar``, otherwise it is ignored.
revision_id
Add a comment in the filter config having the description for the changes applied.
revision_no
The revision count.
revision_date: ``True``
Boolean flag: display the date when the filter configuration was generated. Default: ``True``.
revision_date_format: ``%Y/%m/%d``
The date format to be used when generating the perforce data. Default: ``%Y/%m/%d`` (<year>/<month>/<day>).
test: ``False``
Dry run? If set as ``True``, will apply the config, discard and return the changes.
Default: ``False`` and will commit the changes on the device.
commit: ``True``
Commit? Default: ``True``.
debug: ``False``
Debug mode. Will insert a new key under the output dictionary,
as ``loaded_config`` containing the raw configuration loaded on the device.
The output is a dictionary having the same form as :mod:`net.load_config <salt.modules.napalm_network.load_config>`.
CLI Example:
.. code-block:: bash
salt 'edge01.bjm01' netacl.load_filter_config my-filter pillar_key=netacl debug=True
Output Example:
.. code-block:: jinja
edge01.bjm01:
----------
already_configured:
False
comment:
diff:
[edit firewall]
+ family inet {
+ /*
+ ** $Date: 2017/03/22 $
+ **
+ */
+ filter my-filter {
+ interface-specific;
+ term my-term {
+ from {
+ source-port [ 1234 1235 ];
+ }
+ then {
+ reject;
+ }
+ }
+ term my-other-term {
+ from {
+ protocol tcp;
+ source-port 5678-5680;
+ }
+ then accept;
+ }
+ }
+ }
loaded_config:
firewall {
family inet {
replace:
/*
** $Date: 2017/03/22 $
**
*/
filter my-filter {
interface-specific;
term my-term {
from {
source-port [ 1234 1235 ];
}
then {
reject;
}
}
term my-other-term {
from {
protocol tcp;
source-port 5678-5680;
}
then accept;
}
}
}
}
result:
True
The filter configuration has been loaded from the pillar, having the following structure:
.. code-block:: yaml
netacl:
- my-filter:
terms:
- my-term:
source_port:
- 1234
- 1235
action: reject
- my-other-term:
source_port:
- - 5678
- 5680
protocol: tcp
action: accept
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Generate and load the configuration of the whole policy.
.. note::
The order of the filters and their terms is very important.
The configuration loaded on the device respects the order
defined in the ``filters`` and/or inside the pillar.
When merging the ``filters`` with the pillar data, consider the
``prepend`` argument to make sure the order is correct!
filters
List of filters for this policy.
If not specified or empty, will try to load the configuration from the pillar,
unless ``merge_pillar`` is set as ``False``.
prepend: ``True``
When ``merge_pillar`` is set as ``True``, the final list of filters generated by merging
the filters from ``filters`` with those defined in the pillar (if any): new filters are prepended
at the beginning, while existing ones will preserve the position. To add the new filters
at the end of the list, set this argument to ``False``.
pillar_key: ``acl``
The key in the pillar containing the default attributes values. Default: ``acl``.
pillarenv
Query the master to generate fresh pillar data on the fly,
specifically from the requested pillar environment.
saltenv
Included only for compatibility with
:conf_minion:`pillarenv_from_saltenv`, and is otherwise ignored.
merge_pillar: ``True``
Merge the CLI variables with the pillar. Default: ``True``.
The merge logic depends on the ``prepend`` argument and
the CLI has higher priority than the pillar.
only_lower_merge: ``False``
Specify if it should merge only the filters and terms fields. Otherwise it will try
to merge everything at the policy level. Default: ``False``.
This option requires ``merge_pillar``, otherwise it is ignored.
revision_id
Add a comment in the policy config having the description for the changes applied.
revision_no
The revision count.
revision_date: ``True``
Boolean flag: display the date when the policy configuration was generated. Default: ``True``.
revision_date_format: ``%Y/%m/%d``
The date format to be used when generating the perforce data. Default: ``%Y/%m/%d`` (<year>/<month>/<day>).
test: ``False``
Dry run? If set as ``True``, will apply the config, discard and return the changes.
Default: ``False`` and will commit the changes on the device.
commit: ``True``
Commit? Default: ``True``.
debug: ``False``
Debug mode. Will insert a new key under the output dictionary,
as ``loaded_config`` containing the raw configuration loaded on the device.
The output is a dictionary having the same form as :mod:`net.load_config <salt.modules.napalm_network.load_config>`.
CLI Example:
.. code-block:: bash
salt 'edge01.flw01' netacl.load_policy_config debug=True
Output Example:
.. code-block:: text
edge01.flw01:
----------
already_configured:
False
comment:
diff:
---
+++
@@ -1228,9 +1228,24 @@
!
+ipv4 access-list my-filter
+ 10 remark my-term
+ 20 deny tcp host 1.2.3.4 eq 1234 any
+ 30 deny udp host 1.2.3.4 eq 1234 any
+ 40 deny tcp host 1.2.3.4 eq 1235 any
+ 50 deny udp host 1.2.3.4 eq 1235 any
+ 60 remark my-other-term
+ 70 permit tcp any range 5678 5680 any
+!
+!
+ipv4 access-list block-icmp
+ 10 remark first-term
+ 20 deny icmp any any
!
loaded_config:
! $Date: 2017/03/22 $
no ipv4 access-list my-filter
ipv4 access-list my-filter
remark my-term
deny tcp host 1.2.3.4 eq 1234 any
deny udp host 1.2.3.4 eq 1234 any
deny tcp host 1.2.3.4 eq 1235 any
deny udp host 1.2.3.4 eq 1235 any
remark my-other-term
permit tcp any range 5678 5680 any
exit
no ipv4 access-list block-icmp
ipv4 access-list block-icmp
remark first-term
deny icmp any any
exit
result:
True
The policy configuration has been loaded from the pillar, having the following structure:
.. code-block:: yaml
acl:
- my-filter:
terms:
- my-term:
source_port:
- 1234
- 1235
protocol:
- tcp
- udp
source_address: 1.2.3.4
action: reject
- my-other-term:
source_port:
- [5678, 5680]
protocol: tcp
action: accept
- block-icmp:
terms:
- first-term:
protocol:
- icmp
action: reject
u capirca.get_policy_configt filtersR- R R R R R. R R R R u net.load_configR R R! R" R# ( R R$ R% ( R2 R- R R R R R. R R R R R R! R" R/ R) t
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Helper that can be used inside a state SLS,
in order to get the filter configuration given its name.
filter_name
The name of the filter.
pillar_key
The root key of the whole policy config.
pillarenv
Query the master to generate fresh pillar data on the fly,
specifically from the requested pillar environment.
saltenv
Included only for compatibility with
:conf_minion:`pillarenv_from_saltenv`, and is otherwise ignored.
u capirca.get_filter_pillarR R R ( R$ ( R& R R R ( ( s> /usr/lib/python2.7/site-packages/salt/modules/napalm_netacl.pyt get_filter_pillarZ s
c C@ s# t d | | d | d | d | �S( uw
Helper that can be used inside a state SLS,
in order to get the term configuration given its name,
under a certain filter uniquely identified by its name.
filter_name
The name of the filter.
term_name
The name of the term.
pillar_key: ``acl``
The root key of the whole policy config. Default: ``acl``.
pillarenv
Query the master to generate fresh pillar data on the fly,
specifically from the requested pillar environment.
saltenv
Included only for compatibility with
:conf_minion:`pillarenv_from_saltenv`, and is otherwise ignored.
u capirca.get_term_pillarR R R ( R$ ( R& R' R R R ( ( s> /usr/lib/python2.7/site-packages/salt/modules/napalm_netacl.pyt get_term_pillarv s
( t __doc__t
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