backport all firewall based documentation

docs/configuration/firewall/index.rst

@@ -4,31 +4,32 @@
 Firewall
 ########
 
-With VyOS being based on top of Linux and its kernel, the Netfilter project
+As VyOS is based on Linux it leverages its firewall. The Netfilter project
-created the iptables and now the successor nftables for the Linux kernel to
+created iptables and its successor nftables for the Linux kernel to
-work directly on the data flows. This now extends the concept of zone-based
+work directly on packet data flows. This now extends the concept of 
-security to allow for manipulating the data at multiple stages once accepted
+zone-based security to allow for manipulating the data at multiple stages once 
-by the network interface and the driver before being handed off to the
+accepted by the network interface and the driver before being handed off to 
-destination (e.g. a web server OR another device).
+the destination (e.g., a web server OR another device).
 
-A simplified traffic flow, based on Netfilter packet flow, is shown next, in
+A simplified traffic flow diagram, based on Netfilter packet flow, is shown 
-order to have a full view and understanding of how packets are processed, and
+next, in order to have a full view and understanding of how packets are 
-what possible paths can take.
+processed, and what possible paths traffic can take.
 
 .. figure:: /_static/images/firewall-gral-packet-flow.png
 
-Main notes regarding this packet flow and terminology used in VyOS firewall:
+The main points regarding this packet flow and terminology used in VyOS 
+firewall are covered below:
 
-   * **Bridge Port?**: choose appropiate path based on if interface were the
+   * **Bridge Port?**: choose appropriate path based on whether interface 
-     packet was received is part of a bridge, or not.
+     where the packet was received is part of a bridge, or not.
 
-If interface were the packet was received isn't part of a bridge, then packet
+If the interface where the packet was received isn't part of a bridge, then 
-is processed at the **IP Layer**:
+packetis processed at the **IP Layer**:
 
    * **Prerouting**: several actions can be done in this stage, and currently
-     these actions are defined in different parts in vyos configuration. Order
+     these actions are defined in different parts in VyOS configuration. Order
      is important, and all these actions are performed before any actions
-     define under ``firewall`` section. Relevant configuration that acts in
+     defined under ``firewall`` section. Relevant configuration that acts in
      this stage are:
 
       * **Conntrack Ignore**: rules defined under ``set system conntrack ignore
@@ -40,12 +41,12 @@ is processed at the **IP Layer**:
       * **Destination NAT**: rules defined under ``set [nat | nat66]
         destination...``.
 
-   * **Destination is the router?**: choose appropiate path based on
+   * **Destination is the router?**: choose appropriate path based on
-     destination IP address. Transit forward continunes to **forward**,
+     destination IP address. Transit forward continues to **forward**,
      while traffic that destination IP address is configured on the router
      continues to **input**.
 
-   * **Input**: stage where traffic destinated to the router itself can be
+   * **Input**: stage where traffic destined for the router itself can be
      filtered and controlled. This is where all rules for securing the router
      should take place. This includes ipv4 and ipv6 filtering rules, defined
      in:
@@ -61,14 +62,14 @@ is processed at the **IP Layer**:
 
      * ``set firewall ipv6 forward filter ...``.
 
-   * **Output**: stage where traffic that is originated by the router itself
+   * **Output**: stage where traffic that originates from the router itself
-     can be filtered and controlled. Bare in mind that this traffic can be a
+     can be filtered and controlled. Bear in mind that this traffic can be a
-     new connection originted by a internal process running on VyOS router,
+     new connection originated by a internal process running on VyOS router,
-     such as NTP, or can be a response to traffic received externaly through
+     such as NTP, or a response to traffic received externaly through
-     **inputt** (for example response to an ssh login attempt to the router).
+     **input** (for example response to an ssh login attempt to the router).
      This includes ipv4 and ipv6 filtering rules, defined in:
 
-     * ``set firewall ipv4 input filter ...``.
+     * ``set firewall ipv4 output filter ...``.
 
      * ``set firewall ipv6 output filter ...``.
 
@@ -79,16 +80,16 @@ is processed at the **IP Layer**:
      * **Source NAT**: rules defined under ``set [nat | nat66]
        destination...``.
 
-If interface were the packet was received is part of a bridge, then packet
+If the interface where the packet was received is part of a bridge, then 
-is processed at the **Bridge Layer**, which contains a ver basic setup where
+the packet is processed at the **Bridge Layer**, which contains a basic setup for
-for bridge filtering:
+bridge filtering:
 
-   * **Forward (Bridge)**: stage where traffic that is trasspasing through the
+   * **Forward (Bridge)**: stage where traffic that is trespasing through the
      bridge is filtered and controlled:
 
      * ``set firewall bridge forward filter ...``.
 
-Main structure VyOS firewall cli is shown next:
+The main structure of the VyOS firewall CLI is shown next:
 
 .. code-block:: none
 
@@ -134,7 +135,7 @@ Main structure VyOS firewall cli is shown next:
             - custom_zone_name
                + ...
 
-Please, refer to appropiate section for more information about firewall
+Please, refer to appropriate section for more information about firewall
 configuration:
 
 .. toctree::

docs/configuration/firewall/zone.rst

@@ -123,3 +123,41 @@ written from the perspective of: *Source Zone*-to->*Destination Zone*
       set firewall zone DMZ from LAN firewall name LANv4-to-DMZv4
       set firewall zone LAN from DMZ firewall name DMZv4-to-LANv4
 
+**************
+Operation-mode
+**************
+
+.. opcmd:: show firewall zone-policy
+
+   This will show you a basic summary of zones configuration.
+
+   .. code-block:: none
+
+      vyos@vyos:~$ show firewall zone-policy
+      Zone    Interfaces    From Zone    Firewall IPv4    Firewall IPv6
+      ------  ------------  -----------  ---------------  ---------------
+      LAN     eth1          WAN          WAN_to_LAN
+              eth2
+      LOCAL   LOCAL         LAN          LAN_to_LOCAL
+                            WAN          WAN_to_LOCAL     WAN_to_LOCAL_v6
+      WAN     eth3          LAN          LAN_to_WAN
+              eth0          LOCAL        LOCAL_to_WAN
+      vyos@vyos:~$
+
+.. opcmd:: show firewall zone-policy zone <zone>
+
+   This will show you a basic summary of a particular zone.
+
+   .. code-block:: none
+
+      vyos@vyos:~$ show firewall zone-policy zone WAN
+      Zone    Interfaces    From Zone    Firewall IPv4    Firewall IPv6
+      ------  ------------  -----------  ---------------  ---------------
+      WAN     eth3          LAN          LAN_to_WAN
+              eth0          LOCAL        LOCAL_to_WAN
+      vyos@vyos:~$ show firewall zone-policy zone LOCAL
+      Zone    Interfaces    From Zone    Firewall IPv4    Firewall IPv6
+      ------  ------------  -----------  ---------------  ---------------
+      LOCAL   LOCAL         LAN          LAN_to_LOCAL
+                            WAN          WAN_to_LOCAL     WAN_to_LOCAL_v6
+      vyos@vyos:~$