Table 14: Typical Firewall Settings; Figure 29: Create New Firewall Rule - Grandstream Networks UCM6100 Series User Manual

If enabled, ICMP response will not be allowed for Ping request. The default
Ping Defense
setting is disabled. To enable or disable it, click on the check box for the LAN or
Enable
WAN (UCM6102 only) interface.
Enable to prevent Ping-of-Death attack to the device. The default setting is
Ping-of-Death
disabled. To enable or disable it, click on the check box for the LAN or WAN
Defense Enable
(UCM6102 only) interface.
Under "Custom Firewall Settings", users could create new rules to accept, reject or drop certain traffic going
through the UCM6100. To create new rule, click on "Create New Rule" button and a new window will pop
up for users to specify rule options.
Right next to "Create New Rule" button, there is a checkbox for option "Reject Rules". If it's checked, all the
rules will be rejected except the firewall rules listed below. In the firewall rules, only when there is a rule that
meets all the following requirements, the option "Reject Rules" will be allowed to check:
•
Action: "Accept"
•
Type "In"
•
Destination port is set to the system login port (e.g., by default 8089)
•
Protocol is not UDP

Table 14: Typical Firewall Settings

Figure 29: Create New Firewall Rule

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