36 GB-Ware Firewall Product Guide
ment Numbers Authority (IANA) has specified network addresses in RFC 1918 that are designated exclusively for internal networks.
IANA Private Network IP Address Rules
Quantity of Addresses | Network Class | IP Address Range |
Available |
|
|
|
|
|
1 | A | 10.0.0.0 - |
|
| 10.255.255.255 |
|
|
|
16 | B | 172.16.0.0 - |
|
| 172.31.255.255 |
|
|
|
256 | C | 192.168.0.0 - |
|
| 192.168.255.255 |
|
|
|
Note
Because GTA firewalls perform NAT, the IP address and any network addresses behind the firewall (i.e., attached to, or on the protected network or PSN) can be unregistered. IANA compliance is largely a matter of convenience in NATted networks.
9.Gateway/Default Route on External Interface (No DHCP or PPP/ PPPoE/PPTP)
If your external network interface is not using DHCP (which automatically fetches gateway information), enter a default route for outbound traffic. Once the IP address, net mask, and device assignment have been made, the wizard will prompt for the default route. The wizard attempts to determine the network segment of the IP address automatically.
10.Password
Assign a password to your firewall (required). Initially, the user ID and password is set to “gnatbox.” The user ID can be changed later in Authorization then Admin Accounts.
Caution
GTA recommends changing the default user ID and password to prevent unauthorized access. See the GNAT Box System Software User's Guide for instructions.
10.Saving Your Settings
The summary screen displays all your configuration settings. If you need to make changes, use the PREVIOUS button to move back to the desired dialog and make corrections. Once you are satisfied with your settings, select SAVE and allow the firewall to boot up. Initial configuration is now complete.