Global Technology Associates GBWA200501-01 User Manual download pdf (Page 44)

GB-Ware Firewall Product Guide40

• Have you added a static route on the ﬁrewall to tell it which router is

used to reach the Internet? Have you set the router’s default route

to be the ﬁrewall? Have you set the

default route for hosts on the

problem network to be the router or ﬁrewall?

• Is the wrong IP address assigned to the hosts or ﬁrewall? All net

work interfaces on the ﬁrewall must be on different logical networks.

• Is the default route assigned incorrectly? The

default route should

always be on the same subnet as the network interface of the host

(this is true for all hosts, not just the ﬁrewall). For a ﬁrewall, the

de-

fault route must be an IP address on the network which is attached

to the network interface.

Note

When using PPP, PPTP or PPPoE, the default route is not necessarily

on the same subnet. The route is assigned by your PPP provider.

2. Why can't one host (computers and devices) behind the ﬁrewall reach the

Internet?

This may indicate that the default route is assigned incorrectly (or not at all)

to hosts on the protected or Private Service networks. All hosts protected

by the ﬁrewall must use the IP address of the ﬁrewall’s network interface for

the respective network. Hosts that reside behind routers or other gateways

on these networks generally use the IP address of the gateway or router

instead.

3. Why can't I access the web user interface from the protected network?

The default remote access ﬁlter set is generated from the conﬁguration

parameters entered in the Network Information screen. It is possible that

the ﬁrewall’s protected network interface is on a different subnet from your

host. Check the remote access ﬁlter for the web interface; it may need to be

adjusted.

4. Why do I get errors when starting GBAdmin? Why is online help not

displayed?

GBAdmin requires Microsoft Windows and Microsoft Internet Explorer 5.x or

later. Components from Internet Explorer are used to display the online help

information. Errors will occur if Internet Explorer for Windows is not correctly

installed.

5. Why can't I “see” or ping the protected network interface?

First check for proper network conﬁguration settings. If the network conﬁgu-

ration is correct for the network interface, you may have the wrong cable for

your connection.

• For a direct connection (ﬁrewall to host or

router), you need a

crossover cable.

• For a connection through a

hub or switch, you need a straight-

through cable.

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Global Technology Associates GBWA200501-01 User Manual Page 44

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