Patent ID: 9596214
Date: 2017-03-14
CPC Classifications: H04L,Y02T

Claim:
1. A method performed on a security device comprising a first-phase filter and a second-phase filter, the method comprising: first verifying, by the first-phase filter, a protocol of a request received by the security device, where the received request passes the first verifying based on the protocol being supported by the security device, where the received request originated from a source other than the security device and is destined for a target other than the security device; second verifying, by the second-phase filter in response to the protocol passing the first verifying, content of the received request, where the content passes the second verifying based on the content conforming to the supported protocol; forwarding, by the security device in response to the content passing the second verifying, the received request to the target; and denying, by security device in response to the protocol not passing the first verifying or in response to the content not passing the second verifying, the received request from proceeding to the target.