Geneko GWR-I series, Руководство пользователя

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USER MANUAL GWR-I Cellular Router Series
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Settings - IP Filtering
IP filtering is simply a mechanism that decides which types of IP datagram’s will be processed
normally and which will be discarded. By discarded we mean that the datagram is deleted and completely
ignored, as if it had never been received. You can apply many different sorts of criteria to determine which
datagram’s you wish to filter; some examples of these are:
•
Protocol type: TCP, UDP, ICMP, etc.
•
Socket number (for TCP/UPD)
•
Datagram type: SYN/ACK, data, ICMP Echo Request, etc.
•
Datagram source address: where it came from
•
Datagram destination address: where it is going to.
It is important to understand at this point that IP filtering is a network layer facility. This means it
doesn't understand anything about the application using the network connections, only about the
connections themselves. The IP filtering rule set is made up of many combinations of the criteria listed
previously.
Use firewall option to set IP addresses from which is possible remote access on the GWR-I Router.
Demilitarized Zone (DMZ) allows one IP Address to be exposed to the Internet. Because some applications
require multiple TCP/IP ports to be open, DMZ provides this function by forwarding all the ports to one
computer at the same time. In the other words, this setting allows one local user to be exposed to the
Internet to use a special-purpose services such as Internet gaming, Video-conferencing and etc. It is
recommended that you set your computer with a static IP if you want to use this function.
IP Filtering
Label Description
IP Filtering
Disable all
This field specifies if Firewall and DMZ settings are disabled at the GWR-I
Router.
Enable Firewall This field specifies if Firewall is enabled at the GWR-I Router.
Enable DMZ This field specifies if DMZ settings is enabled at the GWR-I Router.
Allow access from the following devices
Enable This check box allows/forbidden host to access to the GWR-I Router.
IP address This field specifies IP address of the host allow access to the GWR-I Router.
Service This field specifies service of the host allow access to the GWR-I Router.
Protocol This field specifies protocol of the host allow access to the GWR-I Router.
Port This field specifies port of the host allow access to the GWR-I Router.
Add Click Add to insert (add) new item in table to the GWR-I Router.
Remove Click Remove to delete selected item from table.
Allow access from the following networks
Enable This check box allows/forbidden host to access to the GWR-I Router.
IP address This field specifies IP address of the host allow access to the GWR-I Router.
Subnet mask
This field specifies network mask of the network to allow access to the GWR-I
Router.