Network security is considered as a major task in network architecture.  A network administrator had to focus, and it is defined and demonstrated as the rules, plans, and procedures followed by a network administrator to protect the network devices from different threats, and simultaneously, the passive and active attacks are generated from various vulnerable sources. Further, the unauthorized users must be prevented from accessing the network. There are different types of threats that need to be identified, explored, and take a step for preventing it, wherein the attacks are like DoS and DDos attracts, Aurora attacks, malware attack, port scanning, password sniffer, IP spoofing, session hijacking, and man-in-the-middle attacks, and cyber-attacks. This could be done with the help of firewalls, which can secure the network from malicious attacks. This paper is more focused on strong policy and performs incredible directions for averting the mentioned attacks. Firewalls are one of the strongest hardware attachments to secure the zone of networking sectors like local large, multinational, or enterprise networks. The deployment of firewalls that enforce an organization’s security policy is network devices. For this kind of tiresomeness, the concern of this paper is to enhance and develop network security like IPsec VPN, strong masquerades, port forwarding, create a trusted zone on WAN and LAN side, etc., based on the firewall by the execution of various tasks and different policies.