A Fault Tolerant and Secured Network Design for File and Application Sharing in a Mid-sized Business Environment
Eric Blancaflor, Christian Collins C. Chua, Vince Anthony A. Parallag, William Penaflor Rey, Tamarauoyerimini Sanami, Mary Jane C. Samonte · 2020
This study aims to observe and improve design infrastructure of a mid-sized business focusing on the security and fault tolerant network architecture characteristics. The case site is a recruitment agency in the Philippines, categorized as a mid-sized company that needs improvement in its network design and the main requirement is to link all offices with the headquarters office for more secure file sharing and application sharing. Moreover, due to massive cyberattacks, the design will also consider the use of modern network security tools. The new network design allows secure file sharing between the headquarter office to the other five branches in the Philippines thru implementation of DNS Servers, FTP and Internal Web Server, Simplewall Firewall and NAS Setup, Cobian Backup & DMZ. Branch connectivity uses IPSEC DMVPN tunnels, dynamic routing and only permit authorized VPN connections to access HQ resources. The IPSec DMVPN allows ease and secure file sharing between branches with scalability in mind. In the test validation, the proposed network infrastructure achieved a 100% success rate in its functionality (using ping and tracert utility) based on the simulation conducted in the "GNS3" platform. Finally, based on the vulnerability assessments conducted, the proposed network design has protection from MAC Address Flooding, Ping of Death (DOS) and VPN sniffing.