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Chapter 2
Configuration
10
SubProduct
Key Life Time In the Key Lifetime field, you may optionally
select to have the key expire at the end of a time period of
your choosing. Enter the number of seconds you’d like the
key to be used until a re-key negotiation between each
endpoint is completed.
Phase 2
Encryption The encryption method selected in Phase 1
will be displayed.
Authentication The authentication method selected in
Phase 1 will be displayed.
PFS The status of PFS will be displayed.
Group There are two Diffie-Hellman Groups to choose
from: 768-bit and 1024-bit. Diffie-Hellman refers to a
cryptographic technique that uses public and private keys
for encryption and decryption.
Key Life Time In the Key Lifetime field, you may select to
have the key expire at the end of a time period of your
choosing. Enter the number of seconds you’d like the
key to be used until a re-key negotiation between each
endpoint is completed.
Other Setting
NAT Traversal
NetBIOS broadcast Check the box next to this field to
enable NetBIOS traffic to pass through the VPN tunnel.
Anti-replay Check the box next to this field to enable
the Anti-replay protection. This feature keeps track of
sequence numbers as packets arrive, ensuring security at
the IP packet-level.
Keep-Alive If you select this option, the Gateway will
periodically check your Internet connection. If you are
disconnected, then the Gateway will automatically re-
establish your connection.
Check this box to block unauthorized IP addresses
Enter in the field to specify how many times IKE must fail
before blocking that unauthorized IP address. Enter the
length of time that you specify (in seconds) in the field.
When finished making your changes to this screen,
click Save Settings to save the changes, or click Cancel
Changes to undo your changes.
The Access Restrictions Tab > Internet
Access
The Internet Access screen allows you to block or allow
specific kinds of Internet usage. You can set up Internet
access policies for specific computers and set up filters by
using network port numbers.
Access Restrictions > Internet Access
Internet Access
Internet Access Policy Multiple filters can be saved as
Internet Access Policies. When you wish to edit one, select
the number of the policy from the drop-down menu. The
screen contents will reflect the settings of the currently
selected policy. If you wish to delete the Policy, click
Delete. To see a summary of all policies, click Summary.
Internet Access Policy > Summary
On the Summary screen, the policies are listed with the
following information: No., Policy Name, Days, and Time
of Day. To delete a policy, click the policy’s check box and
click Delete. To return to the Internet Access Policy screen,
click Close.
Status Policies are disabled by default. To enable a policy,
select the policy number from the drop-down menu, and
click Enabled.
The remaining fields on the screen are used to create a
new policy, or to display the settings of an existing policy.