Table 10: Typical Firewall Settings; Table 11: Firewall Rule Settings; Figure 16: Create New Firewall Rule - Grandstream Networks UCM6510 User Manual

Ping Defense
Enable
SYN-Flood Defense
Enable
Ping-of-Death
Defense Enable
Under "Custom Firewall Settings", users could create new rules to accept, reject or drop certain traffic
going through the UCM6510. To create new rule, click on "Create New Rule" button and a new window
will pop up for users to specify rule options.
The following figure shows a firewall rule example that will deny SSH access for the UCM6510 from WAN
side.
Rule Name
Action
Type
Firmware Version 1.0.0.25

Table 10: Typical Firewall Settings

If enabled, ICMP response will not be allowed for Ping request. The default
setting is disabled. To enable or disable it, click on the check box for the LAN
or WAN interface.
Enable to prevent SYN Flood denial-of-service attack to the device. The
default setting is disabled. To enable or disable it, click on the check box for the
LAN or WAN interface.
Enable to prevent Ping-of-Death attack to the device. The default setting is
disabled. To enable or disable it, click on the check box for the LAN or WAN
interface.

Figure 16: Create New Firewall Rule

Table 11: Firewall Rule Settings

Specify the Firewall rule name to identify the firewall rule.
Select the action for the Firewall to perform.

ACCEPT

REJECT

DROP
Select the traffic type.

IN
UCM6510 IP PBX User Manual Page 43 of 233