Backend Migration 2 Tier-3 Tier

ssue: we have a solution that was intended to be a 3 tier solution but one that is presently a 2 tier solution. We need a 3 tiered system. With the following specs: Architecture: -Uses a thin client at the branches to provide connectivity to the central host. -Internet connection from the branches locations is not required if not available. Security: The system has to have various levels of security administration. The security module defines and controls the user access. All the transactions are encrypted using secure 128 Bit SSL Encryption. passwords are alphanumeric and expire after a period. Password retries are a maximum of three times, after which user is blocked. Further a secure transaction certificate has been issued by Verisign for all international transactions. Extensive and Elaborate Audit trail is provided. Audit trail allows for reconstruction of each key stroke. Redundancy A dual redundant host configuration will be implemented. Failover is dynamic & constantly synchronization with all the various host servers. Scalability In effect you are redesigning our 2 tier solution and creating a 3 tier solution. Please your exression of interest and your qualifications. the selected companies will be additional details via pmb. Approximate start date of the project after selecting a bid Within one week Additional detail provided via PMB