5 Servers
5-18 VPN 3000 Concentrator Series User Guide
Configuration | System | Servers | DHCP | Add or Modify
These screens let you:
Add: Configure and add a new DHCP server to the list of configured servers.
Modify: Modify the parameters for a configured DHCP server.
Figure 5-16: Configuration | System | Servers | DHCP | Add or Modify screen

DHCP Server

Enter the IP address or hostname of the DHCP server; e.g., 192.168.12.34. (If you have configured a
DNS server, you can enter a hostname in this field; otherwise, enter an IP address.)

Server Port

Enter the UDP port number by which you access the DHCP se rver. The default is 67.
Add or Apply / Cancel
To add this server to the list of configured DHCP servers, click Add. Or, to apply your changes to this
DHCP server, click Apply. Both actions include your entry in the active configuration. The Manager
returns to the Configuration | System | Servers | DHCP screen. Any new server appears at the bottom of the
DHCP Servers list.
Reminder: To save the active configuration and make it the boot configuration, click the Save Needed icon at the
top of the Manager window.
To discard your entries, click Cancel. The Manager returns to the Configuration | System | Servers | DHCP
screen, and the DHCP Servers list is unchanged.
Configuration | System | Servers | NTP
This section of the Manager lets you configure NTP (Network Time Protoc ol) servers that the VPN
Concentrator queries to synchronize with network time.
Clocks in many computers tend to drift a few seconds per day. Exact time synchronization i s important
for systems on a network so that protocol timestamps and events are accurate. Security certificates, for
example, carry a timestamp that determines a time frame for their validity.