Need some help from the greater experts on what I'm doing wrong
here. Here's the scenario:  Office LAN with two gateways (one
DSL, the other T1), each protected by an older SonicWALL
hardware firewall.  Just purchased a new SonicWALL TZ 170 to
review for possibly replacing the old SonicWALL units.  So I
have a test box set up in my office that's connected to our LAN.
I plugged the SonicWALL into a switch here in my office that's
connected to the LAN and placed the test box behind it.  The
SonicWALL has successfully receive both a WAN and LAN IP, so it
looks like all the connections are working well.  Configuration
isn't set yet to block any traffic.  But here's where it gets
wierd:  The box behind the TZ 170 cannot ping any other box on
the network. Likewise, no computers on the LAN can ping the test
box behind the firewall. In fact, they can't even ping the
firewall itself.  The firewall, though it shows itself as being
connected to the WAN, cannot connect to the Internet to download
updates and whatnot. I g