I read few post today within AOs saying to use SMC product. The following shold b a subject of interest to them:

The SMC7004VWBR crashes when a specially formatted series of packets
are sent to TCP port 1723 (PPTP) on its internal interface. Following
the attack, the router remains unresponsive to requests on the wireless
portions of the connected LAN, thus preventing users from accessing
network resources.

SMC Networks has released firmware version 1.23 which fixes this

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