Securing a network airtight whiles maximizing efficiency of the network can be annoying but I have found the following measures helpful. Use Layered Security Architecture Deploy next-generation firewalls (NGFW) that combine deep packet inspection (DPI) with intrusion prevention systems (IPS) without adding significant latency. Quality of Service (QoS): Prioritize critical business applications to maintain performance. Implement Zero Trust Zero Trust Network Access (ZTNA): Dynamically verify access at every stage rather than blanket network trust. Deploy Endpoint Security Install lightweight antivirus and endpoint detection and response (EDR) tools on devices to prevent malware without degrading network performance.

Adopt Layered Security: Use multiple security measures (firewalls, intrusion detection systems, endpoint protection) tailored to specific threats, ensuring no single point of failure while minimizing overhead. 2. Segment Your Network: Divide the network into smaller, isolated segments. This limits the spread of threats without impacting overall performance. 3. Use Optimized Security Tools: Invest in hardware-accelerated firewalls, security appliances, and next-gen solutions designed to scan traffic efficiently without causing bottlenecks. 4. Implement Zero Trust Principles: Authenticate and authorize users and devices continuously, but optimize policies to avoid overburdening the network.

Implemented security measures like firewall optimization and access control lists (ACLs) that were carefully tuned to filter malicious traffic without disrupting legitimate data flows.

Divide your network into smaller, isolated segments to contain potential breaches and minimize the impact on performance. Distribute network traffic evenly across multiple servers to prevent any single server from becoming a bottleneck. This can enhance both security and performance. Use VPNs and Multi-Factor Authentication (MFA) to ensure secure remote access while maintaining network performance.