Eicon Networks SHIVA 1100, Руководство администратора, Страница: 29 / 136

Bridging
System Administrator’s Guide 29
Bridging
The Shiva VPN Gateway may be configured as a network bridge. You may bridge
between network ports (e.g. Internet - LAN) or enable bridging on a single port
(typically LAN) for bridging across a VPN connection.
When bridging has been enabled, a Bridge / br0 port will appear in the Connections
menu. It will be allocated the IP address of the port on which bridging was enabled.
This IP address will be used primarily for accessing the Shiva VPN Gateway
management console, and does not have to be part of the networks that the Shiva
VPN Gateway is bridging.
Bridging between network ports
Select Bridged (Internet/LAN) on the two ports to create a bridge between them. The
Shiva VPN Gateway will learn which computers or devices are present on either side
of the bridge and direct traffic appropriately.
Note: When the Shiva VPN Gateway is bridging between LAN and Internet, it will
not be performing NAT/masquerading. computers will typically use an IP address on
the network connected to the
Shiva VPN Gateway 's Internet port as their gateway,
rather than the Shiva VPN Gateway itself.
Bridging across a VPN connection
Bridging across a VPN connection is useful for:
• Sending IPX/SPX over a VPN, something that is not supported by other VPN
vendors.
• Serving DHCP addresses to remote sites to ensure that they are under better
control.
• It allows users to make use of protocols that do not work well in a WAN
environment (e.g. netbios).
Warning: The unit may take up to 30 seconds longer than normal to reboot after
bridging has been enabled.