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WRVS4400NV2 IPS now blocking Cisco IPS Auto Update Server

Yesterday I noted that my ASA5505 AIP-SSC5 card was failing to auto  update as it had been doing without issue for months. I looked in the logs and the IPS was  showing an HTTP Error when attempting to update. I checked and nothing  had changed in the IPS configuration. Then, on a hunch, I checked the IPS log of the WRVS4400N which is the edge router for the small business network.

The WRVS4400N IPS was blocking connections with the cisco auto update  server because it detected an RPC Anomaly in the traffic. So apparently,  something has changed in the cisco IPS auto update server ( response that the cisco small business router misidentifies as a threat. . .

FYI-I also posted this issue to the small business router community discussion forum.

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