No one inside the office has internet access.
I'm working with a Cisco 1900 series router, Cisco 5520 ASA(firewall) and Dell Powerconnect 6224 switches.
Service has been confirmed up to the router. The line out of the router goes into the Cisco 5520 ASA (firewall). The line out the firewall goes into one of the Powerconnect Switches which are stacked (configured as master/slave (unit 1 & 2).
I can ping and connect to the switch from the Domain Controller but when I ping the Cisco 5520 (firewall) the reply I get is "Destination Host is Unreachable". I get the same reply from workstations.
When the problem began one of the PC 6224 switches would not come on so the cables plugged into it were moved to the other switch. Shortly after the switch that wasn't working came back on. The cables were then randomly moved back into the switch. I'm not sure if certain cables were designated for certain ports.
How can I get things working again.
Any help would be greatly appreciated.
Thanks in advance