Rajannagari Mounith Reddy
Software Engineer — SSL/TLS
Mounith works on SSL certificate management at QCecuring. He writes about certificate discovery, automation, and enterprise PKI operations.
Insights by Rajannagari Mounith Reddy
Pki
mTLS in Production: A Practical Implementation GuideMutual TLS authenticates both client and server with certificates. Here's how to implement mTLS in Nginx, Kubernetes, API gateways, and service meshes — with real configs and troubleshooting for common failures.
Pki
Certificate Chain of Trust: How Digital Trust Actually WorksEvery TLS connection depends on a chain of trust from end-entity certificate through intermediates to a trusted root. Here's how chain validation works, why chains break, and how to fix common chain errors.
Pki
Kubernetes Certificate Management: cert-manager, Service Mesh, and BeyondKubernetes uses certificates at every layer — cluster infrastructure, ingress, and service-to-service. Here's how to manage them all with cert-manager, Istio, and proper monitoring to prevent outages.
Devops
Certificate Management for DevOps Teams: Stop Treating Certs as an AfterthoughtDevOps teams deploy 50 services a week but manage certificates like it's 2010. Here's how to integrate certificate lifecycle into your CI/CD, IaC, and monitoring stack — the DevOps way.
Security
What is SIEM? Security Information and Event Management ExplainedSIEM collects, correlates, and analyzes security events across your infrastructure to detect threats in real-time. Here's how it works, what it monitors, and how it integrates with PKI and certificate management.
Devops
HashiCorp Vault vs AWS Secrets Manager vs Azure Key Vault: Which Secrets Manager?Three dominant approaches to secrets management with very different philosophies. Here's a practical comparison covering architecture, features, pricing, and when each makes sense.
Pki
Education | Guide on Buying a Certificate from a Certificate AuthorityHow CA certificates work, how to purchase them, and what enterprises must consider
Compliance
HIPAA Encryption Requirements: A Practical Guide for Healthcare ITHIPAA requires encryption for protected health information but doesn't prescribe specific algorithms. Here's what 'addressable' actually means, which NIST standards to follow, and how to achieve safe harbor protection.
Pki
Ports Required for Active Directory and PKI: A Complete GuideEssential network ports and protocols for AD and PKI infrastructure
Pki
What Is a Certificate Chain of Trust and How It Works (2025 Guide)A clear, modern explanation of Root CAs, Intermediate CAs, server certificates, and the full trust chain — how browsers validate certificates and where chains break.
Pki
What Is an SSL Certificate and How It Works (Full 2025 Guide)Learn what an SSL certificate is, how SSL and TLS work, how HTTPS encryption is created, and why enterprises rely on digital certificates in 2025.
Compliance
NIST Cybersecurity Framework and PKI: A Practical Implementation GuideThe NIST CSF provides a structured approach to cybersecurity. Here's how PKI and certificate management map to each CSF function, and practical steps to align your cryptographic infrastructure with the framework.
Ssh
What Are SSH Keys? A Complete Guide to SSH Key AuthenticationSSH keys replace passwords with cryptographic proof of identity for remote server access. Here's how they work, how to generate them, and how to manage them securely at enterprise scale.
Pki
What Is a Wildcard Certificate? When to Use It (And When Not To)A wildcard certificate secures all single-level subdomains with one cert. Here's how they work, the security trade-offs, cost implications, and when you should use individual certificates instead.
Pki
What Is a CSR (Certificate Signing Request)? How to Generate and Submit OneA CSR is the first step in getting a TLS certificate. Here's what it contains, how to generate one correctly with OpenSSL, and common mistakes that cause issuance failures.
Ssl tls
What Is Port 443? TLS/SSL Ports ExplainedPort 443 is the default port for HTTPS (TLS-encrypted HTTP). Here's how TLS ports work, which services use which ports, and how to configure TLS on non-standard ports.
Hsm
What Are Hardware Security Modules (HSM)? When and Why You Need OneHSMs store cryptographic keys in tamper-resistant hardware where they can never be extracted. Here's how they work, when you need one, cloud vs on-premises options, and what they cost.
Education Articles
Ssh
SSH Key RotationSSH key rotation replaces old keys with new ones across your infrastructure. Here's why it's necessary, how to do it without outages, and why most organizations never rotate SSH keys (and pay for it later).
By Rajannagari Mounith Reddy
28 May, 2026
Standards
CA/Browser Forum Baseline RequirementsThe Baseline Requirements define the minimum standards every publicly-trusted CA must follow for TLS certificate issuance. Here's what they mandate, how they're enforced, and what happens when CAs violate them.
By Rajannagari Mounith Reddy
20 May, 2026
Standards
What is PKCS (PKCS#7, PKCS#11, PKCS#12)PKCS defines formats and interfaces for cryptographic operations: PKCS#7 for signed/encrypted data, PKCS#11 for HSM access, PKCS#12 for key+cert bundles. Here's what each standard does and where you encounter them.
By Rajannagari Mounith Reddy
12 May, 2026
Cryptography fundamentals
What is AESAES is the symmetric encryption algorithm that protects virtually all encrypted data in transit and at rest. Here's how it works, which modes to use, and where AES implementations fail in practice.
By Rajannagari Mounith Reddy
30 Apr, 2026
Protocols
What is OCSP (Online Certificate Status Protocol)OCSP lets clients check whether a certificate has been revoked in real-time by querying the CA's responder. Here's how it works, why browsers soft-fail, and why OCSP stapling is the only practical deployment.
By Rajannagari Mounith Reddy
28 Apr, 2026
Machine identity
Zero Trust and CertificatesZero trust requires cryptographic proof of identity for every connection. Certificates provide that proof — authenticating workloads, encrypting traffic, and enabling policy enforcement without trusting the network.
By Rajannagari Mounith Reddy
25 Apr, 2026
Kubernetes
Kubernetes Security and PKIKubernetes relies on PKI for all internal authentication: API server, kubelets, etcd, and service accounts. Here's how the cluster PKI works, what certificates exist, and where security gaps hide.
By Rajannagari Mounith Reddy
17 Apr, 2026
Clm
Certificate Monitoring and AlertingCertificate monitoring continuously tracks expiry dates, chain health, and configuration across your infrastructure. Here's how to build effective monitoring, what to alert on, and why most monitoring setups still miss expiring certificates.
By Rajannagari Mounith Reddy
16 Apr, 2026
Key management
Key Rotation StrategiesKey rotation replaces active cryptographic keys with new ones on a schedule or in response to events. Here's how to rotate different key types, what strategies minimize disruption, and where rotation fails.
By Rajannagari Mounith Reddy
16 Apr, 2026
Hsm
HSM Key CeremoniesA key ceremony is the formal, witnessed process of generating cryptographic keys inside an HSM. Here's what happens during a ceremony, why it's required for CA keys, and where ceremonies go wrong.
By Rajannagari Mounith Reddy
13 Apr, 2026
Clm
What is Certificate ScanningCertificate scanning probes network endpoints and systems to extract certificate details — expiry dates, key strengths, chain completeness, and misconfigurations. Here's how scanning works, what it finds, and where it misses certificates.
By Rajannagari Mounith Reddy
12 Apr, 2026
Devsecops
Secrets Management vs Key ManagementSecrets management stores and delivers sensitive values (passwords, tokens, connection strings). Key management handles cryptographic keys with lifecycle controls. Here's how they differ, where they overlap, and when you need both.
By Rajannagari Mounith Reddy
11 Apr, 2026
Code signing
What are CSP and PKCS#11CSP (Cryptographic Service Provider) and PKCS#11 are interfaces that connect signing tools to cryptographic hardware. Here's how they work, when you need each, and where integration issues cause signing failures.
By Rajannagari Mounith Reddy
06 Apr, 2026
Ssl tls
What is Certificate PinningCertificate pinning restricts which certificates a client accepts for a domain, defending against CA compromise. Here's how it works, why browsers deprecated it, and where it still makes sense.
By Rajannagari Mounith Reddy
22 Mar, 2026
Ssl tls
TLS TerminationTLS termination is the point in your infrastructure where encrypted connections are decrypted. Here's why it matters for certificate management, where it typically happens, and the visibility gaps it creates.
By Rajannagari Mounith Reddy
18 Mar, 2026
Ssl tls
Self-Signed CertificatesA self-signed certificate is signed by its own private key instead of a trusted CA. Here's when they're legitimate, how to generate one, and why they're dangerous in production.
By Rajannagari Mounith Reddy
22 Feb, 2026
Clm
What is Certificate DiscoveryCertificate discovery is the process of finding every SSL/TLS certificate deployed across your infrastructure — including the ones nobody remembers installing. Here's how it works and why it prevents outages.
By Rajannagari Mounith Reddy
18 Feb, 2026
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