Project Information
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Client Name: Medira Hospitals Pvt. Ltd.
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Service Provided: Internal Network Security Audit + Firewall Hardening
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Duration: 7 Days
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Network Security Audit & Firewall Hardening for Medira Hospitals Pvt. Ltd.
Medira Hospitals Pvt. Ltd. is a rapidly expanding healthcare provider operating two modern medical facilities. As the hospital digitized its operations—implementing electronic health records (EHR), online appointment systems, and telemedicine services—management grew worried about rising cyber threats in the healthcare sector. Recently, IT staff had noticed unauthorized devices appearing on the internal network, slowdowns in the hospital management system, and unexplained spikes in outbound traffic. Concerned about potential network intrusion or internal misuse, Medira decided to engage ZDShield for a complete Network Security Audit and Firewall Hardening service.
ZDShield began the assessment by mapping Medira’s entire internal network, including VLANs, routers, firewalls, Wi-Fi access points, and medical device connectivity. Using advanced scanning tools like Nmap, Nessus, Wireshark, and internal exploitation frameworks, the team evaluated network segmentation, access control policies, firewall rules, and device configurations. Special attention was given to systems handling sensitive patient data, such as EHR servers, medical imaging systems, and pharmacy databases.
The audit uncovered multiple security weaknesses that put patient confidentiality and system availability at risk. The most critical issue was the lack of proper network segmentation, which allowed any connected device—such as a nurse’s PC—to communicate directly with the EHR database server. Another severe problem was the presence of outdated Windows machines running unsupported versions, leaving them vulnerable to ransomware. ZDShield also identified misconfigured firewall rules, which exposed RDP and SMB services to the internet. Additionally, several Wi-Fi access points were operating with weak encryption, making them susceptible to unauthorized access.
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If exploited, these vulnerabilities could have enabled attackers to access or tamper with patient records, deploy ransomware across the hospital network, or disrupt critical medical systems. Such incidents could have led to operational shutdowns, regulatory penalties, and a severe loss of trust among patients.
ZDShield worked closely with Medira’s IT department to implement comprehensive remediation steps. The internal network was completely segmented into secure zones—administration, medical systems, staff devices, guest Wi-Fi, and critical servers—with strict access policies enforced between them. All outdated systems were upgraded or isolated, and firewall rules were rewritten following the principle of least privilege. Strong WPA3 encryption was applied to all Wi-Fi networks, and rogue devices were blocked permanently. Intrusion detection rules and continuous monitoring were also set up using open-source SIEM tools.
After remediation, ZDShield performed a follow-up audit confirming that all critical risks had been eliminated. Medira Hospitals immediately experienced improved network performance, reduced unauthorized access attempts, and a stronger overall security posture. The hospital management expressed confidence in their revamped cybersecurity framework and signed a yearly network monitoring contract with ZDShield to ensure continuous protection of their infrastructure.