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Hardening Kubernetes Security with Istio Ambient Mode on Flat Networks

Harshwardhan Mehrotra

SRE @One2N

Spandan Ghosh

Content @One2N

Learn how One2N used Istio Ambient mode to enforce zero-trust security on a flat EKS Hybrid network - with mTLS, SPIFFE identity, egress control, and NetworkPolicies.

Multi-Tenant SFTP: How We Built a Zero-Ops Setup on AWS Transfer Family

Kshitish Deshpande

Software Engineer @One2N

Spandan Ghosh

Content @One2N

How One2N built a zero-ops multi-tenant SFTP system for a fintech client using AWS Transfer Family: one endpoint, isolated buckets, no manual server ops.

How we solved a critical site-to-site VPN IP address conflict in AWS

Rishiraj Rathore

SRE @One2N

Spandan Ghosh

Content @One2N

How One2N solved a critical site-to-site VPN IP address conflict in AWS, including details on the problem, failed solutions, and the final parallel system approach that worked with automation.

How to port-forward from EC2 instances without the need for opening any SSH ports or creating Bastion hosts

Harsh Mishra

SRE @One2N

Learn how to port-forward from EC2 instances in private subnets without opening SSH ports or setting up bastion hosts. This AWS SSM Session Manager guide provides a secure, cost-effective, and simple solution for EC2 access and port forwarding.

Accessing private EC2 Instances without keys or passwords

Adarsh Raj

SRE

Spandan Ghosh

Content @One2N

We explore how to securely access private EC2 instances without SSH keys or passwords using AWS Systems Manager Session Manager, especially in large-scale environments.

Maintaining multiple GitHub accounts on a single machine

Saurabh Hirani

Principal SRE @One2N

Learn how to maintain multiple Git accounts on a single machine efficiently. This guide covers generating SSH keys, configuring SSH and Git settings, and automating the process with scripts. Perfect for developers managing personal and professional repositories

Building multi-tenant authorization system for B2B SaaS in Go using Permify

Mohit Kumar

Software Engineer

Build a robust, scalable, and configurable multi-tenant authorization system for your B2B SaaS using Go and Permify, based on Google’s Zanzibar. Learn about its architecture, schema design, and implementation details to enhance security and access control.

Exposing your SaaS API endpoints privately across customers with lower costs

Siddharth Mishra

SRE

Discover how to privately expose your SaaS API endpoints across customers with lower costs using AWS PrivateLink. Learn the benefits, setup, and impressive performance gains over public internet access.

Routing sensitive logs to Syslog server with Log4j2 appender

Hrithik Sawant

SDE

Routing sensitive logs to a Syslog server using Log4j2 appender: a simple, centralized configuration approach to securely manage high-volume application logs.

Automate RDS Secret management using AWS Secret Manager

Siddharth Shashikar

SRE @One2N

Automate secure management of RDS credentials using AWS Secrets Manager. Explore different methods for storing and rotating RDS secrets, and learn how to implement an automated solution with Terraform.

Centralized VPN Solutions for Cloud and On Premise

Sagar Rakshe

SRE

Discover how a centralized VPN solution can address the challenges of shared VPNs and improve security, productivity, and manageability for your organization.

Iptables, Firewalls, Linux blast from the past!

Jaideep Khandelwal

CTO @One2N

A comprehensive guide to the iptables firewall utility, covering its syntax, tables, chains, targets, and real-world use cases for network address translation and IP resolution.

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