Cambium PTP 450 series, Руководство пользователя

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PTP 450 User Guide Security planning
2-90
ptp-450 (July 2014)

To block a subscriber from access to SNMP, you can filter Ports 161 and 162 (the SNMP ports) for both the
TCP and UDP protocols.
NOTE:
In only the SNMP case, filtering occurs before the packet interacts with the protocol stack.
Protocol and Port Filtering with NAT Disabled
Where NAT is disabled on the BHS, you can filter both protocols and the three user-defined ports. Using the check
boxes on the interface, you can either

allow all protocols except those that you wish to block.

block all protocols except those that you wish to allow.
You can allow or block any of the following protocols:

PPPoE (Point to Point Protocol over Ethernet)

Any or all of the following IPv4 (Internet Protocol version 4) protocols:
o
BHSB (Network Neighborhood)
o
SNMP
o
Up to 3 user-defined ports
o
All other IPv4 traffic (see Figure 26 )
o
Uplink Broadcast
o
ARP (Address Resolution Protocol)
o
All others (see Figure 26 )