Installation guide

MyPBX U300 Administrator's Guide
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5.2 Firewall Settings
Firewalls are used to prevent unauthorized Internet users from accessing
private networks connected to the Internet, especially intranets. All
messages entering or leaving the intranet pass through the firewall, which
examines each message and blocks those that do not meet the specified
security criteria.
5.2.1 Firewall Rules
Figure 5-8 Firewall Settings
1) General Settings
·Enable Firewall
Enable the firewall to protect the device. You should reboot the device to
make the firewall run successfully.
·Disable Ping
Enable this item, net ping from remote hosts will be dropped.
·Drop All
When you enable „Drop All‟ feature, system will drop all packets or connection
from other hosts if there are no other rules defined. To avoid locking the devices,
at least one „TCP‟ accept common rule must be created for port used for SSH
access, port used for HTTP access and port sued for CGI access.
2) Common Rules
There is not default rules, you can create them as required