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Configuring Networking
Configuring Routing
Cisco RV120W Administration Guide
37
2
•
Metric—The distance to the target (usually counted in hops).
•
Ref—Number of references to this route.
•
Use—Count of lookups for the route. Depending on the use of -F and -C, this
is either route cache misses (-F) or hits (-C).
•
Interface—Interface to which packets for this route will be sent.
•
Type—Type of routing used (RIP or static).
Configuring Static Routes
You can configure static routes to direct packets to the destination network. A
static route is a pre-determined pathway that a packet must travel to reach a
specific host or network. Some ISPs require static routes to build your routing
table instead of using dynamic routing protocols. Static routes do not require CPU
resources to exchange routing information with a peer router. You can also use
static routes to reach peer routers that do not support dynamic routing protocols.
Static routes can be used together with dynamic routes. Be careful not to
introduce routing loops in your network.
To create a static route:
STEP 1
Select Networking > Routing > Static Routes.
STEP
2
In the Static Route Table, click Add.
STEP
3
In the Route Name field, enter the name of the route.
STEP
4
If a route is to be immediately active, check the Active check box. When a route is
added in an inactive state, it will be listed in the routing table, but will not be used
by the firewall. The route can be enabled later. This feature is useful if the network
that the route connects to is not available when you added the route. When the
network becomes available, the route can be enabled.
STEP
5
Check the Private check box to mark this route as private, which means that it will
not be shared in a Routing Information Protocol (RIP) broadcast or multicast.
Uncheck this box if the route can be shared with other firewalls when RIP is
enabled.
STEP
6
In the Destination IP Address field, enter the IP address of the destination host or
network to which the route leads. For a standard Class C IP domain, the network
address is the first three fields of the Destination LAN IP; the last field should be
zero.
Page 47 / 163
Configuring Networking
Configuring Routing
Cisco RV120W Administration Guide
38
2
STEP
7
In the IP Subnet Mask field, enter the IPv4 Subnet Mask for the destination host or
network. For Class C IP domains, the Subnet Mask is 255.255.255.0.
STEP
8
From the Interface drop-down menu, choose the physical network interface
through which this route is accessible (WAN or LAN).
STEP
9
In the Gateway IP Address field, enter the IP Address of the gateway through
which the destination host or network can be reached. If this firewall is used to
connect your network to the Internet, then your gateway IP is the firewall's IP
address. If you have another router handling your network's Internet connection,
enter the IP address of that router instead.
STEP 10
In the Metric field, enter a value between 2 and 15 to define the priority of the
route. If multiple routes to the same destination exist, the route with the lowest
metric is chosen.
STEP 11
Click Save.
Configuring Dynamic Routing
RIP (Routing Information Protocol, RFC 2453) is an Interior Gateway Protocol (IGP)
that is commonly used in internal networks. It allows the Cisco RV120W to
exchange its routing information automatically with other routers, and allows it to
dynamically adjust its routing tables and adapt to changes in the network.
NOTE
RIP is disabled by default on the Cisco RV120W.
To configure dynamic routing:
STEP 1
Choose Networking > Routing > Dynamic Routing.
STEP
2
To configure how the firewall sends and receives RIP packets, choose the RIP
direction:
•
None—The firewall neither broadcasts its route table nor does it accept any
RIP packets from other routers. This option disables RIP.
•
In Only—The firewall accepts RIP information from other router, but does
not broadcast its routing table.
Page 48 / 163
Configuring Networking
Configuring Routing
Cisco RV120W Administration Guide
39
2
•
Out Only—The firewall broadcasts its routing table periodically but does
not accept RIP information from other routers.
•
Both—The firewall both broadcasts its routing table and also processes RIP
information received from other routers.
STEP
3
Choose the RIP version:
•
Disabled.
•
RIP-1—This is a class-based routing version that does not include subnet
information. RIP-1 is the most commonly supported version.
•
RIP-2B—This version broadcasts data in the entire subnet.
•
RIP-2M—This version sends data to multicast addresses.
STEP
4
RIP v2 authentication forces authentication of RIP packets before routes are
exchanged with other routers. It acts as a security feature because routes are
exchanged only with trusted routers in the network. RIP authentication is disabled
by default. You can enter two key parameters so that routes can be exchanged
with multiple routers present in the network. The second key also acts as a failsafe
when authorization with first key fails.
To enable authentication for RIP-2B or RIP-2M, check the Enable box. (You must
also choose the direction as explained in Step 2.)
If you enabled RIP v2 authentication, enter the following first and second key
parameters:
•
MD5 Key ID—Input the unique MD-5 key ID used to create the
Authentication Data for this RIP v2 message.
•
MD5 Auth Key—Input the auth key for this MD5 key, the auth key that is
encrypted and sent along with the RIP-V2 message.
•
Not Valid Before—Enter the start date when the auth key is valid for
authentication.
•
Not Valid After—Enter the end date when the auth key is valid for
authentication.
STEP
5
Click Save.
Page 49 / 163
Configuring Networking
Configuring Port Management
Cisco RV120W Administration Guide
40
2
Configuring Port Management
The Cisco RV120W has four LAN ports. You can enable or disable ports, configure
if the port is half- or full-duplex, and set the port speed.
To configure LAN ports:
STEP 1
Choose Networking > Port Management.
STEP
2
In the Port Management Setting Table, to enable a port, check the Enable box. To
disable the port, uncheck the Enable box. By default, all ports are enabled.
STEP
3
Check the Auto Negotiation box to let the firewall and network determine the
optimal port settings. By default, automatic mode is enabled. This setting is
available only when the Enable box is checked.
STEP
4
Check the Flow Control box to enable flow control.
STEP
5
(Optional) Choose either half- or full-duplex based on the port support. The default
is full-duplex for all ports. This setting is available only when the Auto check box is
unchecked.
STEP
6
(Optional) Select one of the following port speeds: 10 Mbps or 100 Mbps. The
default setting is 100 Mbps for all ports. This setting is available only when the
Auto check box is unchecked. You can change the port speed if a network is
designed to run at a particular speed, such as 10 Mbps mode. In this case, the
endpoint also uses 10 Mbps mode either by auto-negotiation or manual setting.
STEP
7
Click Save.
Configuring Dynamic DNS (DDNS)
DDNS is an Internet service that allows routers with varying public IP addresses to
be located using Internet domain names. To use DDNS, you must set up an account
with a DDNS provider such as DynDNS.com or TZO.com.
The firewall will notify dynamic DNS servers of changes in the WAN IP address, so
that any public services on your network can be accessed by using the domain
name.
Page 50 / 163
Configuring Networking
Configuring Dynamic DNS (DDNS)
Cisco RV120W Administration Guide
41
2
To configure DDNS:
STEP 1
Choose Networking > Dynamic DNS.
STEP
2
Select the Dynamic DNS Service you are using. Selecting None disables this
service.
STEP
3
If you selected DynDNS.com:
a.
Specify the complete Host Name and Domain Name for the DDNS service.
b.
Enter the DynDNS account username.
c.
Enter the password for the DynDNS account.
d.
Check the Use Wildcards box to enable the wildcards feature, which allows all
subdomains of your DynDNS Host Name to share the same public IP as the
Host Name. This option can be enabled here if not done on the DynDNS Web
site.
e.
In the Update Period field, enter the number of hours before the Cisco RV120W
updates the host information on DynDNS.com.
If you selected TZO.com:
a.
Specify the complete Host Name and Domain Name for the DDNS service.
b.
Enter the user e-mail address for the TZO account.
c.
Enter the user key for the TZO account.
d.
In the Update Period field, enter the number of hours before the Cisco RV120W
updates the host information on TZO.com.
STEP
4
Click Save.

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