TMS zl Management and Configuration Guide ST.1.1.100430

10-41
Troubleshooting
Troubleshooting the TMS zl Module in Routing Mode
You can assign a VLAN to any zone, but it is recommended that you assign the
VLAN that includes your company’s WAN connection to the External zone.
The extra protections will then be applied to traffic being transmitted from
the Internet to your internal network.
Strategy for Resolving Firewall Problems
The advantage of using access policies is that you can tailor them to your
company’s unique environment. Access policies can be as complex or as simple
as your company needs.
Once your access policies are in place, you must ensure that you have config-
ured them correctly so that traffic is being handled appropriately. If you find
that some network traffic is not being handled the way you want it to be, you
need a strategy for isolating the problem and fixing it. Figure 10-8 shows a
simple flow chart that may help you.