EXP Computer S200 manual Mac Address, NetBIOS Name, Protocol Filtering

Bridging Features and Capabilities

Filtering

What Is It?	Filtering lets you restrict data traffic from certain segments of your network. There
	are different methods used to filter data traffic on a bridged network. PathBuilder
	S200 series switch support for filtering includes:
	•	MAC Address Filtering
	•	NetBIOS Name Filtering
	•	Protocol Filtering
Mac Address
	MAC Addressing is important in a bridging operation because one of the most
Filtering	common tasks in a bridging environment is to provide filtering of data frames.
	Filtering provides a way of stopping certain devices from communicating with other
	devices in a network. One way to filter traffic through a bridge is by identifying the
	devices you want to block by their MAC Addresses.
	For more details on MAC Address filtering, see the section “MAC Address
	Filtering” section on page 58” in this manual.
NetBIOS Name
	The NetBIOS Name Filtering feature of PathBuilder S200 series switches lets you
Filtering	restrict or filter all NetBIOS broadcasts, except those to or from a list of servers.
	NetBIOS Name Filtering compares NetBIOS broadcasts to a “pattern” that may have
	a wild card “*” character at the end. For example, if all servers have a naming
	convention with the first part of the name the same, for example, “SVR...”, then you
	can complete only one entry in the NetBIOS Filter Table to permit broadcasts to and
	from the “SVR*” name pattern.
	With NetBIOS Name Filters, you can block the local service name (for example,
	“SNA_GW”) on the WAN link so that NetBIOS broadcasts to and from that name
	are not forwarded across to the internetwork.This feature lets the branches use the
	same name for their local SNA service and you can configure all the workstations to
	access the same local SNA name.
	Refer to “NetBIOS Name Filtering” section on page 76 in this guide.
Protocol Filtering
	Protocol filtering prevents nodes operating with a certain protocol from operating
	outside their intended scope.

Refer to the“Protocol Filtering” section on page 70 for more details.

12 Bridging