With IPHost Network Monitor you can run simple snmp requests against a NETGEAR device in your network.
agentOspfIfAuthKeyId
agent Ospf If Authentication Key Id
1.3.6.1.4.1.4526.10.2.4.9.1.1
The identifier for the authentication key used on this interface. This field is only meaningful when the OSPF-MIB ospfIfAuthType is md5(2); otherwise, the value is not used.
Back to NETGEAR-ROUTING-MIB MIB page.
IPHost Network monitor allows you to monitor agentOspfIfAuthKeyId on NETGEAR device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring NETGEAR cable modems right now.