Firewall are technique that most organisation use to maintain the integrity of their information .

“ A network firewall is a system or group of systems that forces an access control policy between two networks .”

  • It gives auditing , logging ,alerting facility.
  • It can hide the internal private network .
  • It can support the remote dial-in user authentication .

Other security mechanism of E-commerce :

  1. RSA data security

  2. DES ( Data Encryption standard ) security

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