
TA 850 User Manual © 2001, ADTRAN, Inc.
61200375L1-1
TA 850
TA 850 SDSL RCU UIG/61200377L1-31A
Page 38 of 76
Security
Authentication
The method used for authenticating the PPP peer is selected here. The possible values are listed below.
Radius Server
The parameters for the RADIUS server are configured in this menu. The RADIUS server can be used
for authenticating a PPP peer (if defined under
S
ECURITY
/A
UTHENTICATION
)andforTelnetserverses-
sions.
N
ONE
No attempt is made to authenticate the PPP peer.
R
ADIUS
The TA 850 will act as a RADIUS client and authenti-
cate the PPP peer using the RADIUS server. The Ra-
dius server parameters must be set up properly for this
to work.
PPP
The PPP profile is used to authenticate the PPP peer.
PRIMARY SERVER
This is the IP address of the first RADIUS server
that the TA 850 should attempt to communicate
with when authenticating a PPP peer.
SECONDARY SERVER
This is the IP address of the back-up RADIUS serv-
er that the TA 850 should attempt to communicate
with when the primary server does not respond.
UDP PORT
This is the UDP port that the TA 850 should use
when communicating with the RADIUS server.
The default is 1645, which is the commonly used
port.
S
ECRET
The RADIUS server and TA 850 share this text
string. It is used by the RADIUS sever to authenti-
cate the TA 850, the RADIUS client. The factory
default is not to use a secret.
R
ETRY
C
OUNT
(1-10)
This is the number of times the TA 850 should send
a request packet to the RADIUS server without a re-
sponse before giving up. If the number of attempts
to communicate with the primary server is equal to
the retry count, the secondary server (if defined) is
tried. If the secondary server does not respond with-
in the retry count, the PPP peer (or Telnet session) is
not authenticated and is dropped. The default is 5.
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