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Advance
DNS
9-2
Alcatel-Lucent
3FE-61830-AAAA-TCZZA
Edition 01
May 2008
Virtual Server
9-11
Routing
9-14
IP QoS
9-17
Anti-dos
9-20
Port Mapping
9-22
Other
9-24
DNS
A DNS provides an Internet service that translates easy-to-remember alphabetic domain
names into IP addresses; the Internet however, is based on IP addresses. Every time a
user uses a domain name to navigate to a website, a DNS must translate the name into the
corresponding IP address; for example, the domain name www.example.com might
translate to the IP address 198.105.232.4.
The DNS system is its own network. If one DNS cannot translate a particular domain
name, it requests another DNS to provide the translation, and so on, until the correct IP
address is returned.
Click
DNS
in the Advance menu to open the DNS configuration window.
Page 97 / 156
DNS
Advance
3FE-61830-AAAA-TCZZA
Alcatel-Lucent
9-3
Edition 01
May 2008
Figure 9-1
DNS Configuration window
The following table describes the fields of the DNS configuration window.
Table 9-1
Field descriptions
Field
Description
Attain DNS Automatically
When selected, the CellPipe 7130 RG
accepts the first received DNS
assignment from one of the PPPoA-,
PPPoE-, or MER-enabled PVC(s)
during the connection establishment.
Set DNS Manually
When selected, enter the primary and
optional secondary and tertiary DNS IP
addresses.
DNS 1 through DNS 3
The primary, secondary, and tertiary
DNS IP addresses.
Apply Changes
Click to save your changes.
Reset Selected
Click to clear these settings.
Page 98 / 156
Advance
Firewall
9-4
Alcatel-Lucent
3FE-61830-AAAA-TCZZA
Edition 01
May 2008
Firewall
Click
Firewall
in the Advance menu to open the Firewall menu in the left-hand panel,
which contains:
•
IP/Port Filter
•
MAC Filter
•
URL Blocking
The firewall blocking functions and filters add security to your network by restricting
traffic to and from your network according to prescribed criteria.
IP/Port Filter
Click
IP/Port Filter
in the left-hand panel to open the IP/Port Filtering window. Entries
in this table are used to restrict certain types of data packets as they pass through the
gateway based on the source and destination IP address and port.
Page 99 / 156
Firewall
Advance
3FE-61830-AAAA-TCZZA
Alcatel-Lucent
9-5
Edition 01
May 2008
Figure 9-2
IP/Port Filtering window
The following table describes the fields of the IP/Port Filtering window.
Table 9-2
Field descriptions
Field
Description
Outgoing Action
Deny or Allow all of the outgoing IP
data traffic.
Incoming Action
Deny or Allow all of the incoming IP
data traffic, but the response traffic
from the local LAN-side PC is not
included.
Apply Changes
Click to save your changes.
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Firewall
9-6
Alcatel-Lucent
3FE-61830-AAAA-TCZZA
Edition 01
May 2008
Field
Description
Delete Selected
Select a row in the Current Filter Table
and click
Delete Selected
to delete
that row.
Delete All
Click to delete all entries in the Current
Filter Table.
Add Rule
Click to configure a new rule to add to
the Current Filter Table; additional
fields appear.
Rule Action
Choose
Deny
to exclude traffic from
the identified IP address and port.
Choose
Allow
to permit traffic from
the identified IP address and port.
Direction
Choose whether the rule applies to
incoming or outgoing traffic.
Protocol
The protocol of the incoming or
outgoing traffic.
Src IP address
The source IP address for which traffic
is allowed or denied.
Src Subnet Mask
The subnet mask of the source IP
address for which traffic is allowed or
denied.
Src Port
The port of the source IP address for
which traffic is allowed or denied.
Dst IP Address
The destination IP address for which
traffic is allowed or denied.
Dst Subnet Mask
The subnet mask of the destination IP
address for which traffic is allowed or
denied.
Dst Port
The port of the destination IP address
for which traffic is allowed or denied.
19216811.live