Firewire Internet Sharing Probs

Hi, looking for help to resolve the following issue: On my Firewire connected cpu, I can't get past the "You are not connected to the internet." dialog in Safari. Reaching the conclusion that one or more of my settings are incorrect.
1st). 24" iMac w/ 10.5.1; connected to Cable modem via Ethernet
(there is a 5-port switch prior to this cpu)
Sharing > Internet Sharing (Firewire) - ON
Network > Ethernet > Manually; IP Address: 69.92.45.xxx - Subnet: 255.255.252.0
Router: 69.92.xx.x
2nd). Dual 1 GHz Quicksilver w/ 10.4.11; connected to 1st cpu via Firewire
Sharing > Internet Sharing (Firewire) - OFF
Network > Ethernet > Manually; IP Address: 69.92.45.(same as above *plus 1*)
Subnet: 255.255.252.0 - Router: 69.92.(same as above)
I can see & browse files within Network > Servers yet, I'm not able to access the internet.
Might anyone have a suggestion for this prob? I have searched for the answers w/ no concise results.
Thank you for any help,
Sim

simoom,
I'm surprised you're getting anything, on either computer. Let's see if we can't get you straightened out.
First, computer #1 needs to get its IP address via DHCP, not manually (unless your ISP has told you otherwise; not very common). Plus, it would be a good idea to get rid of the switch. A switch is OK if it is downstream of a router, which itself acts as an internal DHCP server, but not when connected directly to a modem.
So, computer #1 should be connected directly to the modem. It will talk directly to your ISP's DHCP server and acquire an IP address. It would appear that the Firewire Sharing is set up properly, so this should be fine once an IP address is nailed down.
Second, computer #2 needs to gain an IP address the same way: via DHCP. When computer #1 has Internet Sharing turned on, it acts just a router would, issuing "private" IP addresses to the connected computer(s), then acting as a NAT router. On computer #2, configure a Firewire network port, and set it to look for an IP address via DHCP.
Scott

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