Optional Np Interface Module - Comtech EF Data SLM-5650A Installation And Operation Manual

8.1.1.2

Optional NP Interface Module

When the optional NP Interface is installed in the SLM-5650A, the NP Management Security
(available as a FAST Option) may be used to change to an alternative secure network
management mode:
•
When NP-Management Security is Low the modem operates in a normal access mode.
•
When NP-Management Security is High the modem has secure access modes active:
o
o
o
o
Selecting the NP (Static) Bridge Mode or Bridge Point-to-Multipoint Mode
has the affect of isolating the 'J5 Ethernet' communication from the Bridged
IP traffic crossing through the modem via the NP Ports 1 through 4. This is
an important point to consider for more secure network operations. See
Figure 8-1.
Ethernet Interface Operation
The NP Interface changes from HTTP to HTTPS web page access, and the Base
Modem web page and Telnet are disabled. The Base Modem M&C is accessible
with SNMPv3, using the NP's IP Address on the 'J5 Ethernet' port.
When the modem is operating in Router Mode:

A number of Base Modem parameters are available via the NP HTTPS
Interface.

A limited number of status-only NP parameters are typically viewable
over the Base Modem HTTP Interface.
When the modem is operating in (Static) Bridge Mode:

NP Management Security cannot be set to High when the NP is in
(Static) Bridge mode.

There is no M&C provided by the NP Interface Module.

The internal Ethernet connection from Base Modem 'J5 Ethernet' port
and the TRANSEC Module is disabled to the NP module interface.

The NP Interface ports P1 through P4 transparently bridge data traffic.

Ethernet communication between the Base Modem 'J5 Ethernet' port
and the NP Interface is disabled, this is independent functionality that is
not changed by the Management Security mode.
When the NP is operating in BPM (Bridge Point-to-Multipoint) Mode:

NP Interface Ethernet ports P1 through P4 transparently bridge data
traffic.

The 'J5 Ethernet' port can be used for Routed IP Traffic and is isolated
from the Bridged traffic network.

M&C of the Base Modem, NP Interface, and TRANSEC Module are only
available using the Base Modem's 'J5 Ethernet' port.
8–3
SLM-5650A Satellite Modem
Revision 10
MN-SLM-5650A