I have a network configuration problem. Not being an experienced admin
with IP addresses and the like, I am not sure what I am doing wrong. Here
is the setup:
Internet----DSLRouter----Switch----LocalDNSServer
| \-----LocalDHCPServer
\-------LocalWorkstations...
The DSLRouter is set to give a fixed IP to the switch, say 192.168.0.254.
The DNSServer and DHCPServer provide those services to the Workstations.
They have IP addresses, let's say, of 192.168.0.1 and 192.168.0.2.
The DNSServer and DHCPServer are configured to use 192.168.0.254 as the
default gateway, which is also passed on to the Workstations.
The netmask throughout all of this is 255.255.255.0.
What I want to do is this:
Internet----DSLRouter----Firewall----Switch----LocalDNSServer
| \-----LocalDHCPServer
\-------LocalWorkstations...
The Firewall will have fixed IPs on both connections, outside the
DHCPServer range. We'll say that the connection to the DSLRouter is
192.168.0.253 and to the switch is 192.168.0.3.
The problem is that when I put the firewall in the path, I get now
Internet access anywhere. If I set the gateway on DNSServer and
DHCPServer to 192.168.0.3, I still get nothing. Assuming the firewall
iptables are configured right (it is an IPCop install), what is wrong
here? Are my IP addresses messed up somehow? Perhaps I should enable
DHCP in the DSLRouter and let the firewall get the IP on that interface
via DHCP?
I want to get this done tonight so any quick help would be appreciated.
Alan
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