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Cisco VPN Module - Cryptographic accelerator - expansion slot
The data encryption modules, AIM-VPN/HP for the Cisco 3660 and NM-VPN/MP for the Cisco 3620 and 3640, are hardware Layer 3 (IPSec) encryption modules and provide DES(56-bit) and 3DES(168-bit) IPsec encryption for multiple T1s or E1s of bandwidth. This level of performance is a dramatic increase over that achievable when running IPSec in software on the main CPU of the Cisco 2600 or 3600. These products also have hardware support for DH, RSA, and DSA key generation. In addition to encryption, the data encryption AIM is intended to increase the security of passwords and various encryption keys over that provided by IOS software and the platform hardware. Specifically, these products have been submitted for Level 2 of the Federal Information Processing Standard (FIPS) 140-1 in general as well as more stringent levels for some parameters such as Level 3 tamper resistance.
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