Enabling Broadcast Forwarding On A Route - D-Link NetDefendOS User Manual

All these multiple log messages can be turned off by disabling log messages on the
triggering IP rule/policy.
• broadcast_nat
This is generated when a broadcast packet has triggered a NAT rule/policy in transparent
mode and has been dropped. A typical log message of this type will look similar to the
following:
prio=Notice id=06000014 rev=1 event=broadcast_nat action=drop rule=a
recvif=If3 srcip=192.168.100.25 destip=192.168.100.255 ipproto=UDP
ipdatalen=58 srcport=137 destport=137 udptotlen=58
Broadcast packets triggering a NAT rule can optionally be dropped silently with a log
message being
TransparentBroadcastNAT. The default value for this setting is DropLog. This should be set to
Drop if no log messages are to be generated.
Example 4.4. Enabling Broadcast Forwarding on a Route
This example shows how to enable broadcast packet forwarding on an existing route called
my_route which is the third route in the main routing table.
Command-Line Interface
First, enable broadcast forwarding globally for non-transparent mode traffic:
gw-world:/> set Settings IPSettings DirectedBroadcasts=Log
Next, enable broadcasting forwarding on the relevant route. Change the context to be the main
routing table:
gw-world:/> cc RoutingTable main
Add the route:
gw-world:/main> set Route 3 BroadcastFwd=Yes
Return to the default CLI context:
gw-world:/main> cc
gw-world:/>
Web Interface
First, enable broadcast forwarding globally for non-transparent mode traffic:
1. Go to: System > Advanced Settings > IP Settings
2. Set Directed Broadcasts to Log
3. Click OK
Next, enable broadcasting forwarding on the relevant route:
generated. This is
306
controlled by a global
Chapter 4: Routing
setting called