Compex Systems 802.11N - Manual (Page 71)

Bridge mode Firewall Configuration Settings
Firewall functionality on any router interface can be enabled using the "Enable Firewall" option.
Router Firewall rules can be configured, enabled or disabled while using Firewall
configuration window which is opened with the "Configure" button.
Firewall entries can be specified by using the following criteria:
Interface the interface (WLAN, LAN or PPP) where filtering of the incoming/passing-through
packets is processed;
IP Type sets which particular L3 protocol type (ICMP, TCP, UDP, P2P) should be filtered;
Source IP/mask is the source IP of the packet (specified within the packet header), usually it is
the IP of the host system which sends the packets;
Source Port is the source port of the TCP/UDP packet (specified within the packet header),
usually it is the port of the host system application which sends the packets;
Destination IP/mask is the destination IP of the packet (specified within the packet header),
usually it is the IP of the system which the packet is addressed to;
Destination Port is the destination port of the TCP/UDP packet (specified within the packet
header), usually it is the port of the host system application which the packet
is addressed to.
Comments is the informal field for the comment of the particular firewall entry. Few words
about the particular firewall entry purpose are saved there usually.
On flag enables or disables the effect of the particular firewall entry. All the added firewall
entries are saved in system configuration file, however only the enabled firewall entries
will be active during device operation.
New entries in Firewall can be saved by activating Apply Setting and Save Changes button or
discarded by activating Cancel button in the Firewall configuration window.
All the active firewall entries are stored in the FIREWALL chain of the iptables filter table, while
the device is operating in Router mode.
PPPoE: Point-to-Point Protocol over Ethernet (PPPoE) is a virtual private and secure connection
between two systems which enables encapsulated data transport. It is commonly used as the
medium for subscribers to connect to Internet Service Providers.
Select the IP Address option PPPoE to configure a PPPoE tunnel in order to connect to an ISP.
Only the external network interface can be configured as PPPoE client as all the traffic will
be sent via this tunnel. The IP address, Default gateway IP and DNS server IP address will be
obtained from the PPPoE server after PPPoE connection is established. Broadcast address is
used for the PPPoE server discovery and tunnel establishment.
Valid authorization credentials are required for the PPPoE connection:
PPPoE Username – username to connect to the server (must match the configured on the
PPPoE server);
Password – password to connect to the server (must match the configured on the PPPoE
server);
PPPoE MTU/MRU – the size (in bytes) of the Maximum Transmission Unit (MTU)
and Maximum Receive Unit (MRU) used for the data encapsulation
while transferring it through the PPP tunnel;