User guide

Raven EDGE/GPRS for Cingular - User Guide, version 2.31 88
AT Commands: Friends
Friends Mode can limit access to the Raven from Cingular’s network and the Internet. Friends
Mode is a limited form of security, a basic firewall.
FIGURE 1. Common : Friends
FM=n
Fn=[d.d.d.d]
Friends
Note: Friends mode does not block any traffic from the cellular network, wanted or
not. Friends Mode will only prevent the
Raven from forwarding data from those
not on the Friends List. It does not prevent data from traversing the network to the
modem which is still billable traffic.
Friends Mode - Only allow specified
IPs to access
the Raven.
n=0 : Disable Friends mode
n=1 : Enable Friends mode - Only packets from friends wi
ll be accepted (see below); packets from other
IP addresses are ignored.
Friends mode IP address.
n=0 - 9 Friends list index .
d.d.d.d =IP address
255 = allow any number 0-255
Example: 166.129.2.255 allows access by all IPs in the range 166.129.2.0-166.129.2.255.
ATF? will return a list of all the current Fn
settings.