title,doi,url,abstract,journal,publication_year,pmid,arxiv Firewall Optimization using Cross-Domain Privacy-Preserving, https://doi.org/10.32628/IJSRCSEIT, https://ijsrcseit.com/CSEIT1833414, Firewalls are wide deployed on the internet for securing personal networks. A firewall checks every incoming or outgoing packet to make a decision whether or not to accept or discard the packet supported its policy. Optimizing firewall policies is crucial for rising network performance. previous work on firewall improvement focuses on either intrafirewall or interfirewall improvement inside one body domain wherever the privacy of firewall policies isn't a priority. In existing formally specifies the resource sharing mechanism between 2 totally different tenants within the presence of our projected cloud resource mediation service. The correctness of permission activation and delegation mechanism among totally different tenants using four distinct algorithms (Activation DelegationForward Revocation and Backward Revocation) is additionally incontestable exploitation formal verification. we propose the primary cross-domain privacy-preserving cooperative firewall policy improvement protocol. Specifically for any 2 adjacent firewalls happiness to 2 totally different body domains our protocol will determine in every firewall the foundations which will be removed because of the opposite firewall. The optimization method involves cooperative computation between the 2 firewalls with none party revealing its policy to the opposite. we enforced our protocol and conducted in depth experiments. The results on real firewall policies show that our protocol will take away as several as forty ninth of the foundations in a very firewall whereas the typical is nineteen.4%. The communication value is a smaller amount than many hundred kilobytes. Our protocol incurs no further on-line packet process overhead and the offline interval is a smaller amount than many hundred seconds., International Journal of Scientific Research in Computer Science Engineering and Information Technology, 2018, CSEIT1833414