System Administration - 3Com OfficeConnect 3CP4144 Cli User's Manual

System
Administration
The Bridge Firewall has three modes:
1 Discard Routed Protocols:
This is the default mode. If a protocol is configured for routing and a packet for
that protocol type is received from the LAN that is not addressed to the MAC
address of the OfficeConnect Remote 812, it is discarded.Additionally, broadcasts
(including ARPs) for the protocol are not passed to the bridge. To configure the
Bridge Firewall for this mode, use the command:
set bridge firewall discard_routed_protocols
2 Forward Unicast Packets Only:
If a protocol is configured for routing, and a packet for that protocol type is
received from the LAN that is not addressed to the MAC address of the
OfficeConnect Remote 812, it is bridged. Additionally, ARP broadcasts for IP
addresses other than that of the OfficeConnect Remote 812 are also bridged.
Other broadcasts for the configured protocol are not bridged. To configure the
Bridge Firewall for this mode, use the command:
set bridge firewall fwd_unicast_only
3 Forward Broadcast/Unicast Packets:
Unicast packets for a configured protocol received from the LAN that are not
addressed to the MAC address of the OfficeConnect Remote 812 are bridged.
Received broadcasts (e.g., DHCP) are bridged. To configure the Bridge Firewall for
this mode, use the command:
set bridge firewall fwd_bc_and_unicast
Packets received from the WAN do not pass through the Bridge Firewall. Instead,
packets received from the WAN are delivered to the router or bridging function
based on their encapsulation and on the state of the MAC-Encapsulated Routing
parameter in the remote site profile.
In general, a packet received in a routed encapsulation (i.e., IPCP or Routed RFC
1483) is delivered to the router. A packet received in a bridged encapsulation is
passed on to the bridge. If MAC-Encapsulated Routing is enabled, the received
(bridge-encapsulated) packets are delivered to the router.
This section provides details and examples for performing the following system
administration tasks:
Setting Date and Time
Setting System Identification
Configuring Web Browser and TELNET Login Access
Providing TFTP Access
Setting Password Protection

System Administration

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