My DSL modem is connected to a Netgear Router/Switch "A". A cable from that switch connects to another switch, Switch "B". Another cable connects from Switch "B" to th Uplink ofa Linksys Router/Switch. Two short cables connect to two NIC's Dell Server running under RedHat 9. The other switches connect in other rooms to Windows PC's. They have connectivity to the internet. The Linux box cannot connect.
What should I correct in my configuration to solve this problem?