Topex Bytton HSDPA, Руководство пользователя

Страница: 45 / 89

TOPEX BYTTON HSDPA User’s Manual
pag. 45
ƒ
Same P / New P – This section allows you to select two options:
-
SP – when this option is selected the source port typed in the Port S field will be forwarded on
the same port to the computer with the IP address from the IP D field. If you select the “SP”
option, the “Port D” field will be filled only with the 0 value;
- NP – if you select this option, you will have to fill the “ Port D ” area with the number of the new
port to which you want to forward the port from the “Port S” field.
ƒ
Port D – the destination port. This area is filled when the “NP” option is selected in the “Same P /
New P” section. It represents the number of port where the source port is forwarded.
After you select these options press the “
Save ” and “ Commit ” buttons.
Iptables rules
This section allows setting rules for the iptable via the web interface.
ƒ
Rule – enables or disables the rule for the iptables
ƒ
Interface - select the type of the used interface in order to communicate with the Bytton equipment.
The available options are the same as for the Port forward section;
ƒ
Direction – select “Input” to open a communication link or “Forward” to redirect the source port from
the Bytton equipment;
ƒ
Protocol – select the communication protocol used. The options are TCP, UDP or ICMP;
ƒ
IP – the IP address of the computer from the coverage area of the Bytton, in the case when in the
“Direction” field is set “Forward”. When it is set the “Input” option the IP address will not be filled;
ƒ
Port – the number of source port which will be open;
ƒ
D/A – accept or drop the respective rule. View Active Rules
In this page you can see the active rules for the firewall, rules that you have set in the previous section.
General info:
The firewall has several sections, for pre-routing, post-routing, input, output and forwarding of data
packets. This refers to the moment of time for the data packets:
PREROUTING: before effective routing, as soon as the packets are received by an interface.
POSTROUTING : after the local routing is performed, but before leaving an interface
INPUT: Right before they are sent a local process, the rules apply to external packets that are sent to the
equipment.
OUTPUT: Right after they are generated by a local process, rules apply to packets that et out of the
BYTTON router.
FORWARD : transfer operations, the data packets are coming in through one interface and getting out via
another interface.