User guide

March 2005 Managing Your Canopy Network
Through Software Release 6.1
Page 304 of 425 Issue 1
Canopy System User Guide
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:
− SMB (Network Neighborhood)
− SNMP
− Up to 3 user-defined ports
− All other IPv4 traffic (see Figure 117)
◦ Uplink Broadcast
◦ ARP (Address Resolution Protocol)
◦ All others (see Figure 117)
PPPoE
ARP
All Other IPv4
User
Defined
Port 1
IPv4
Multicast
BootP
Server
BootP
Client
SNMP
SMB
User
Defined
Port 3
User
Defined
Port 2
All Others
Figure 117: Categorical protocol filtering
The following are example situations in which you can configure protocol filtering where
NAT is disabled:
◦ If you block a subscriber from only PPoE and SNMP, then the subscriber retains
access to all other protocols and all ports.
◦ If you block PPoE, IPv4, and Uplink Broadcast, and you also check the
All others selection, then only Address Resolution Protocol is not filtered.