Secure Communication Protocols and Their Implementation

This blog explains that encryption alone is insufficient to prevent attackers from abusing exposed services and focuses on brute-force credential attacks against common internet-facing services (SMB, RDP, MSSQL). It outlines core secure protocols (TLS, SSH, IPsec, S/MIME, HTTPS), maps brute-force and follow-on techniques to MITRE ATT&CK (e.g., T1110, T1078, T1021), and provides a defensive checklist including strong authentication, account lockout, MFA, VPN use, limiting exposure of common ports, and regular monitoring.