Authentication Configuration - Motorola Netopia Embedded Software Handbook

7-10 Administrator's Handbook
On a Motorola Netopia
can be configured on the Ethernet LAN (all models), Ethernet WAN models, Connection Profiles, and the Default
Profile. Keys can have lifetimes, defined as a start date and time and an end date and time, or infinite.
Key management
Typically, you configure only one key on a given interface and all of the interfaces that interact with that
interface. RIP updates are sent every 30 seconds. Each RIP packet is authenticated using one key and sent.
When the Motorola Netopia
device (peer).
The longer it is in use, a single key becomes less secure. Therefore, RFC2082 specifies that an interface must
support at least two keys per interface to allow a transition from an old key to a new key. It is recommended
that you specify an overlapping time of five minutes for transitioning from one key to the next. Whenever two
keys are valid at the same time, the Motorola Netopia
has received an authenticated packet from in the past three minutes) on its network are using the new key. If
any of the peers have not used the new key yet, the Motorola Netopia
with each key.
If the last valid key expires, the Device Event History logs a "* RIP: last authentication key expired" message,
and continues to use that key as if it were still valid.

Authentication configuration

To configure RIP-2 MD5 authentication, from the Main Menu, select System Configuration, then IP Setup.
Main
Menu
The IP Setup screen appears.
Ethernet IP Address:
Ethernet Subnet Mask:
Define Additional Subnets...
Default IP Gateway:
Backup IP Gateway:
Primary Domain Name Server:
Secondary Domain Name Server:
Domain Name:
Rip Options...
Proxy Arp Enabled:
Multicast Forwarding...
VRRP Options...
Static Routes...
Additional LANs...
Enter an IP address in decimal and dot form (xxx.xxx.xxx.xxx).
Set up the basic IP attributes of your Netopia in this screen.
®
router, every interface will be allowed to have up to two keys. RIP-2 MD5 authentication
®
router receives an authenticated RIP packet from a device, it keeps track of that
System Configuration
®
router tries to determine if other peers (devices that it
®
router will send RIP updates twice, once
IP Setup
192.168.1.1
255.255.255.0
0.0.0.0
0.0.0.0
0.0.0.0
0.0.0.0
No
None
IP Address Serving...
IP Setup