This section covers the configuration of essential server and authentication services, including LDAP, Kerberos, and Single Sign-On (SSO), which are critical for managing secure user access across enterprise systems. It also explores secret management through HashiCorp Vault integrated with MySQL to securely store sensitive credentials. Additionally, protocols like Nginx, OpenLDAP, TLS, and SSH are configured to ensure secure communication and encrypted data transmission, providing a comprehensive approach to protecting systems from unauthorized access and enhancing network security.

This section focuses on the configuration and management of firewalls and network access controls to secure network infrastructures from unauthorized access and external threats. The reports detail the implementation of firewalls and access control lists (ACLs) to regulate traffic flow and enforce security policies. Additionally, the configuration of TLS (Transport Layer Security) and Certificate Authorities (CAs) ensures secure data transmission across the network. The overall objective is to enhance network security by restricting access and encrypting communications, thereby protecting critical systems and data.

This section addresses the use of tools such as Nessus Essentials, OpenVAS, and Kali Linux for performing vulnerability assessments and identifying potential security flaws in network systems. It covers the scanning of systems for weaknesses, analyzing the results, and generating reports to provide actionable recommendations. Additionally, the section outlines the importance of establishing security policies to protect against threats and mitigate risks, while also ensuring that networks adhere to compliance standards and industry best practices.

This section highlights the use of bash scripting and automation to streamline system administration tasks, including setting up and managing servers. It also delves into system auditing to ensure security policies and configurations are properly enforced. Additionally, the reports explore configuration management using tools like Docker for containerized environments and automated setups. By focusing on automation and audits, this section emphasizes optimizing system performance, ensuring compliance, and maintaining secure infrastructure through consistent monitoring and reporting.

These two VPN projects involved configuring and analyzing VPN connections for secure communication using StrongSwan on Linux. The first project focused on establishing the VPN connection, configuring iptables for masquerading, and using Wireshark to analyze traffic, ensuring secure encapsulation and client-server handshakes. The second project built upon this by generating security keys through a Certificate Authority (CA), configuring the UFW firewall for VPN traffic, and testing encrypted communication using syslog for validation, ensuring the secure transmission of data between the client and server.

This project focused on implementing post-quantum cryptography using OpenSSL with quantum-safe algorithms to secure communication. The first part involved setting up Apache with SSL on a Linux server, configuring the server to handle TLS 1.3 and managing certificates. The second part included building quantum-safe cryptographic libraries using liboqs and configuring OpenSSL to integrate quantum-safe algorithms such as Kyber and Dilithium. Finally, I conducted a server-client handshake using quantum-safe keys to secure connections, demonstrating the future of encryption in a post-quantum era.