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 :
RSA data security
DES ( Data Encryption standard ) security
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