Wireless networking has become a fundamental component of modern organizations and educational institutions, enabling users to access the internet and communicate efficiently. However, these networks are often vulnerable to several security challenges, including unauthorized device access and the presence of rogue access points. This work focuses on the design and deployment of a secure wireless network using Juniper networking technologies such as the SRX300 firewall, EX series switches, and Mist AP32/AP63 wireless access points. Network segmentation is implemented using Virtual Local Area Networks (VLANs) to separate traffic and enhance overall network security and management. A dedicated guest wireless network is also configured through the Juniper Mist Cloud platform using a captive portal authentication mechanism, which provides controlled access for external users. The SRX300 firewall is used to enforce security policies that regulate network traffic and restrict unauthorized activities. Furthermore, advanced security features including rogue access point detection is integrated to identify and analyze potential wireless threats. The developed system demonstrates an effective solution for establishing a secure, scalable, and well-managed enterprise wireless network environment.