Clavister SG4300 Series, Руководство по началу работы, Страница: 39 / 68

All the required IP addresses for Internet connection can, alternatively, be automatically retrieved
from an ISP's DHCP server by enabling the DHCP Client option for the interface connected to the
ISP. We enable this option by first selecting Ethernet > Interfaces in the navigation tree to display
a list of all the interfaces.
Click the ge2 interface in the list to display its properties.
In the above screenshot, DHCP is enabled for this interface and this is the required setting if IP
addresses are to be retrieved automatically. Usually, a DHCP Host Name does not need to be
specified but can sometimes be used by an ISP to uniquely identify this Clavister Security Gateway
as a particular DHCP client to the ISP's DHCP server.
On connection to the ISP, all required IP addresses are retrieved automatically from the ISP via
DHCP and CorePlus automatically sets the relevant address objects in the address book with this
information.
For CorePlus to know on which interface to find the public Internet, a route has to be added to the
main CorePlus routing table which specifies that the network all-nets can be found on the interface
connected to the ISP and this route must also have the correct Default Gateway IP address specified.
This all-nets route is added automatically by CorePlus during the DHCP address retrieval process.
After all IP addresses are set via DHCP and an all-nets route is added, the connection to the Internet
is configured but no traffic can flow to or from the Internet since there is no IP rule defined that
allows it. As was done in the previous option (A) above, we must therefore define an IP rule that
will allow traffic from a designated source interface and source network. (in this example, the
network ge3_net and interface ge3) to flow to the destination network all-nets and the destination
interface ge2.
C. PPPoE setup
For PPPoE connection, we must create a PPPoE tunnel interface associated with the physical
Ethernet interface. Assume that the physical interface is ge2 and the PPPoE tunnel object created is
called wan_pppoe. Go to Interfaces > PPPoE in the navigation tree and select Add > PPPoE
Tunnel. These values can now be entered into the PPPoE Tunnel properties dialog.
3.3. Manual Web Interface Setup
Chapter 3. CorePlus Configuration
39