Cisco DPC2425 DOCSIS User Manual page 62

How Do I Configure My DOCSIS Residential Gateway?
Field Name
Identity
Network address
type
Remote address
IPsec Settings
With VPN tunnels there are two phases of Security Association (SA).
Phase 1 creates an Internet Key Exchange (IKE) SA
When Phase 1 is complete, Phase 2 creates one or more IPsec SAs that are then
used to key IPsec sessions
Field
Pre-shared key
Phase 1 DH group
62
Description
Allows you to enter the identity string after you have selected the
identity type using one of the following formats:
For IP address mode use the format xxx.xxx.xxx.xxx
For FQDN use the format "yourdomain.com"
For email address u se the format "yourname@yourdomain.com"
The remote VPN endpoint on the other end of the tunnel should match
these settings for its remote endpoint settings
Allows you to enter the address type for the endpoint WAN. Choose
one of the following options:
IP address
FQDN
Allows you to enter either the IP address or the FQDN of the remote
endpoint depending on what Network Address type you selected
Description
Allows you to enter the Pre-shared key of the firewall identifier if one
side of the VPN tunnel is using a unique firewall
Allows you to select one of following three Diffie-Hellman (DH)
encryption/decryption groups:
768 bits
1024 bits
1536 bits
Diffie-Hellman is a cryptographic technique that uses public and
private keys for encryption and decryption. The higher number of bits
selected, the more secure the connection
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