QA:Testcase firewalld and NetworkManager

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   NAME                      DEVICES    ZONE
 
   NAME                      DEVICES    ZONE
   System em1                em1        not set
+
   System em1                em1        --
  
''not set'' means to use the default zone.
+
''--'' means to use the default zone.
 
+
Zones are set in NetworkManager and the ifcfg- files in ''/etc/sysconfig/network-scripts/''
+
  
 
You can also check (as root) the resulting firewall directly:
 
You can also check (as root) the resulting firewall directly:
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=== 2. Change the zone of a connection. ===
 
=== 2. Change the zone of a connection. ===
  
Add ''ZONE=work'' to the ifcfg file of the connection.  
+
Add ''ZONE=work'' to the ''/etc/sysconfig/network-scripts/ifcfg-*'' file of the connection.  
  
As root use an editor and add ''ZONE=work'' to the end of the ifcfg- file of that connection in ''/etc/sysconfig/network-scripts/''.
+
As root use an editor and add for example ''ZONE=work'' to the end of the ifcfg- file of that connection in ''/etc/sysconfig/network-scripts/''.
 
The result should look similar to this (only the last line is important):
 
The result should look similar to this (only the last line is important):
  

Revision as of 17:18, 10 December 2012

Contents

Description

Firewalld needs NetworkManager, which tells firewalld what network interface belongs to which zone. This is the test case to check if firewalld and NetworkManager are working together.

How to test

1. Connect to a network and check if the network is part of the default zone:

Show all supported zones:

 firewall-cmd --get-zones

The output should look like this:

 drop work internal trusted home dmz public block external

Show all active zones with the interfaces belonging to the zones:

 firewall-cmd --get-active-zones

The output should look like this (em1 is in used as an example):

 public: em1

List all settings of the public zone:

 firewall-cmd --zone=public --list-all

The output should look like this:

 zone: public
 interfaces: em1
 services: mdns dhcpv6-client ssh

To see the zone of active devices with nmcli (the NetworkManager command line client):

 nmcli -f NAME,DEVICES,ZONE con status

The output should look like this:

 NAME                      DEVICES    ZONE
 System em1                em1        --

-- means to use the default zone.

You can also check (as root) the resulting firewall directly:

 iptables-save | grep ZONES

The result should be something like this:

 :POSTROUTING_ZONES - [0:0]
 :PREROUTING_ZONES - [0:0]
 -A PREROUTING -j PREROUTING_ZONES
 -A POSTROUTING -j POSTROUTING_ZONES
 :PREROUTING_ZONES - [0:0]
 -A PREROUTING -j PREROUTING_ZONES
 :FORWARD_ZONES - [0:0]
 :INPUT_ZONES - [0:0]
 -A INPUT -j INPUT_ZONES
 -A FORWARD -j FORWARD_ZONES
 -A FORWARD_ZONES -i em1 -j FWDI_ZONE_public
 -A FORWARD_ZONES -o em1 -j FWDO_ZONE_public
 -A INPUT_ZONES -i em1 -j IN_ZONE_public

em1 is the interface used by NetworkManager for the connection. NM will automatically add the interface of a connection to the default zone.

2. Change the zone of a connection.

Add ZONE=work to the /etc/sysconfig/network-scripts/ifcfg-* file of the connection.

As root use an editor and add for example ZONE=work to the end of the ifcfg- file of that connection in /etc/sysconfig/network-scripts/. The result should look similar to this (only the last line is important):

 UUID="......................"
 NM_CONTROLLED="yes"
 BOOTPROTO="dhcp"
 DEVICE="em1"
 ONBOOT=yes
 HWADDR=.........
 TYPE=Ethernet
 DEFROUTE=yes
 PEERDNS=yes
 PEERROUTES=yes
 IPV4_FAILURE_FATAL=yes
 IPV6INIT=no
 NAME="System em1":
 ZONE=work

NetworkManager will automatically reconnect and the zone will be set accordingly:

 firewall-cmd --zone=work --list-all

The output should look like this:

 zone: work
 interfaces: em1
 services: ipp-client mdns dhcpv6-client ssh

Also check the output of

 firewall-cmd --get-zone-of-interface=em1

In KDE (nm-applet in GNOME hasn't supported this yet) you should be able to change the zone also in System Settings -> Network Settings, select the connection and click on Edit..., change the zone in Firewall zone combo box and press OK.

3. Remove the ZONE from the ifcfg file again

After you remove the ZONE line from ifcfg file, NetworkManager will place the interface back into the default zone public.

4. Set a new default zone in the firewalld config file as root with an editor:

The firewalld config file is: /etc/firewalld/firewalld.conf

Change the DefaultZone to look like this:

 # default zone
 # The default zone used if an empty zone string is used.
 # Default: public
 DefaultZone=home

Reload firewalld:

 firewall-cmd --reload

Check if the connection is using the new default zone:

 firewall-cmd --get-zone-of-interface=em1
 firewall-cmd --zone=home --list-all
 

You can also set the default zone with firewall-cmd --set-default-zone=zone (no need to reload firewalld).