Netcomm NB1300 DSL Modem contains a flaw that may allow a remote denial of service. The issue is triggered when flooding the WAN interface with large ICMP ECHO requests, and will result in loss of service availability for legitimate users.
Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround: Place the IP address 192.168.1.254 (ensure no device behind the Netcomm uses
that IP address) into the NB1300s 'DMZ Host' field This option is located under the 'Misc Config' page of the Management Console. By doing this the Netcomm device will forward the malformed packets to a fictitious address and mitigate the issue.