HSDPA
User’s Manual
WMOCEAN +420 225 371 777
http://www.wmocean.com
p. 39
This is a security feature, using a proprietary application: the remote endpoint won’t accept
tunneling connections unless it “know” their respective keys. This way, if unauthorized
persons know your GRE settings but do not have the code for the key, they won’t be able to
establish an IP tunnel.
By default the Key field has the value “off”, meaning no tunnel key is used.
Note that HDSPA features two GRE IP tunnels,
GRE0 and GRE1 respectively.
Depending upon the requirements of your application, you may
use a single GRE tunnel, both of them or none.
5.4 ROUTING
The section about “ROUTING” includes thee sub-sections: Firewall, Routes (static) and
Dynamic.
5.4.1. Firewall
The “Firewall” section includes both NAT (redirecting addresses and ports) and Firewall
(accepts or rejects data packets).
HSDPA features a SPI firewall that uses static and dynamic packet filtering. The
static packet filtering firewall examines each incoming and outgoing packet based on several
criteria such as Source IP address, Destination IP address. comes with a
default configuration for the firewall, which ensures the security of your local network. If you
want to change these default settings, you must proceed with care. The firewall and
