I have a PC here that is on the network, can access network shares and use the internet (internet is modem--->sonicwall, sonicwall---->switch, switch----->all workstations). I can ping the sonicwall, the server, and other workstations from the workstation in question.... but I cannot ping the workstation in question from another workstation, nor can it be seen by scanning the ip range of the network... any idea how this is possible??