Siemens EF 711 Series Betriebsanweisung PDF herunterladen (Seite 56)

Configuring the SCALANCE IWLAN Controller

Configuring the SCALANCE IWLAN Controller for the First Time

SCALANCE WLC711

2-26 C79000-G8976-C260-03, 07/2012, User Guide, V8.11

– Retransmit-Interval — Specifies the time in seconds (displays OSPF default). The default

setting is 5 seconds.

– Transmit Delay— Specifies the time in seconds (displays OSPF default). The default

setting is 1 second.

9. To save your changes, click Save.

To Confirm That Ports Are Set for OSPF:

1. To confirm that the ports are set up for OSPF, and that advertised routes from the upstream

router are recognized, click View Forwarding Table. The Forwarding Table is displayed.

The following additional reports display OSPF information when the protocol is in operation:

– OSPF Neighbor — Displays the current neighbors for OSPF (routers that have interfaces

to a common network)

– OSPF Linkstate — Displays the Link State Advertisements (LSAs) received by the

currently running OSPF process. The LSAs describe the local state of a router or network,

including the state of the router’s interfaces and adjacencies.

2. To update the display, click Refresh.

Configuring Filtering at the Interface Level

The SCALANCE IWLAN solution has a number of built-in filters that protect the system from

unauthorized traffic. These filters are specific only to the SCALANCE IWLAN Controller. These

filters are applied at the network interface level and are automatically invoked. By default, these

filters provide stringent-level rules to allow only access to the system's externally visible services.

In addition to these built-in filters, the administrator can define specific exception filters at the

interface-level to customize network access. These filters depend on Topology Modes and the

configuration of an L3 interface for the topology.

For Bridged at Controller topologies, exception filters are defined only if L3 (IP) interfaces are

specified. For Physical, Routed, and 3rd Party AP topologies, exception filtering is always

configured since they all have an L3 interface presence.

Built-in Interface-based Exception Filters

On the SCALANCE IWLAN Controller, various interface-based exception filters are built in and

invoked automatically. These filters protect the SCALANCE IWLAN Controller from

unauthorized access to system management functions and services via the interfaces. Access to

system management functions is granted if the administrator selects the allow management

traffic option in a specific topology.

Allow management traffic is possible on the topologies that have L3 IP interface definitions. For

example, if management traffic is allowed on a physical topology (esa0), only users connected

through ESA0 will be able to get access to the system. Users connecting on any other topology,

such as Routed or Bridged Locally at Controller, will no longer be able to target ESA0 to gain

management access to the system. To allow access for users connected on such a topology, the

given topology configuration itself must have allow management traffic enabled and users will

only be able to target the topology interface specifically.

On the SCALANCE IWLAN Controller’s L3 interfaces (associated with either physical, Routed, or

Bridged Locally at Controller topologies), the built-in exception filter prohibits invoking SSH,

HTTPS, or SNMP. However, such traffic is allowed, by default, on the management port.

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