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IMPORTANT
SNS 3.x versions have reached End of Maintenance since July 1st, 2024.
We recommend that you update your SNS firewalls to a version with maintenance to guarantee the protection of your infrastructure.

# Creating or modifying a Wi-Fi interface (WLAN)

Interfaces corresponding to the firewall's access points (WLAN) are listed in the left section of the Interfaces window. Select an interface in order to modify its parameters. A tab will appear:

NOTE

WLAN interfaces cannot be added or deleted.

## “Configuration of the interface” tab

Name (mandatory) | Name given to the WLAN interface. (See warning in the introduction to the section on Interfaces)
Comments | Allows you to enter comments regarding the interface.
VLANs attached to the interface | List of VLANs attached to the selected interface.
Color | Color assigned to the interface.
This interface is | An interface can either be “internal (protected)” or “external (public)”. If you select “internal (protected)”, you are indicating that this interface is protected. This protection includes the memorization of machines that have logged on to this interface, conventional traffic security mechanisms (TCP) and implicit rules for services offered by the firewall such as DHCP (see the section Implicit rules). Protected interfaces are represented by a shield (). If you select “external (public)”, you are indicating that this part of the network is linked up to the internet. In most cases, the external interface, linked up to the internet, has to be in external mode. The shield icon disappears when this option is selected.

### Wi-Fi

Network name | Enter the name assigned to the Wi-Fi network that the firewall manages (SSID).
Authentication | Select one of the three authentication mechanisms that allow connecting to the Wi-Fi network that the firewall manages: Open network (no authentication). NOTE When this option is selected, the Security key field will become inactive (grayed out). WPA (Wi-Fi Protected Access). WPA 2 (WPA 2 is an upgrade to WPA offering a higher level of security).
Security key | Enter the security key (password) needed for logging on to the Wi-Fi network.
Access point isolation | This feature makes it possible to prohibit devices connected to the Wi-Fi network from communicating directly with one another without going through the firewall. It is enabled by default (in public Wi-Fi hotspot configurations). However, it must be disabled for private Wi-Fi networks that link up, for example, workstations to a network-based printer connected by Wi-Fi.

### Address range

None (interface disabled) | By selecting/unselecting this option, the interface will be enabled/disabled. By disabling an interface, it becomes unusable. In terms of use, this may correspond to an interface to be used in the near or distant future, but which is not active. An interface which has been disabled because it is not in use is an example of an additional security measure against intrusions.
Fixed IP (static) | By selecting this option, the interface will have a static address range. In this case, its IP address and the mask of the sub-network to which the interface belongs, have to be indicated.

Here, several associated IP addresses and network masks may be defined for the same bridge (the need to create aliases, for example). These aliases may allow you to use this Stormshield Network firewall as a central routing point. As such, a bridge can be connected to various sub-networks with a different address range. To add or remove them, simply use the Add and Delete buttons located above the fields in the table.

Several IP addresses (aliases) can be added in the same address range on an interface. In this case, these addresses must all have the same mask. Reloading the network configuration will apply this mask on the first address and a mask /32 on the following addresses.