Enterprise Linux Migration & Open-Source Modernization

We migrate servers, workstations, and core infrastructure services from Microsoft, VMware, and Oracle environments to enterprise Linux distributions and certified open platforms. We deploy hybrid coexistence topologies during migration to prevent operational downtime.

What We Do

• Directory Services & Identity Management:

  • Implementation of Active Directory alternatives: FreeIPA, ALD Pro, or Red Hat IdM.
  • Bidirectional cross-realm trusts between Active Directory and Linux domains for transparent Windows/Linux interoperability.
  • Centralized configuration and policy management via Ansible and SSSD (network shares, printers, security baselines).
  • Kerberos Single Sign-On (SSO) across 1C/ERP, databases, and internal web portals.

• Server Fleet & Workstations:

  • Deployment and configuration of enterprise Linux systems: Astra Linux Special Edition, RED OS, and Alt Linux.
  • Hardware cryptography and PKI integration: CSP middleware, smartcards, and USB tokens (Rutoken, JaCarta) for digital signatures and banking portals.
  • Application compatibility: ERP clients, office productivity suites (MyOffice, R7-Office), and hardware peripherals (printers, scanners).

• Corporate Email & Messaging:

  • Migration from Microsoft Exchange to CommuniGate Pro, RuPost, Yandex 360, or VK WorkSpace.
  • Zero-downtime mailbox migration preserving calendars, contacts, and Global Address Lists (GAL).
  • Email hygiene and security: spam filtering, DKIM, SPF, DMARC, and TLS compliance.

• Virtualization, Databases & Backup:

  • Migration from VMware vSphere and Hyper-V to RED Virtualization, zVirt, or Proxmox VE.
  • Database migration from MS SQL Server and Oracle to Postgres Pro / PostgreSQL.
  • Enterprise backup pipelines built on Cyber Backup and RuBackup.

Coexistence Architecture (Hybrid Federation)

To eliminate operational downtime during migration windows, we deploy a hybrid directory coexistence architecture:

               +--------------------------------------+
               |   Hybrid Client Fleet (Win/Linux)    |
               +------------------+-------------------+
                                  |
            +---------------------+---------------------+
            |                                           |
+-----------v-----------+  Bidirectional Trust   +------v---------------+
|  Active Directory DC  |<======================>|  FreeIPA / IdM Domain|
|  - Windows Endpoints  |    (Kerberos Realm)    |  - Linux Servers/ARMs|
|  - Legacy Exchange    |                        |  - Enterprise Linux  |
+-----------------------+                        +----------------------+
            |                                           |
+-----------v-----------+                        +------v---------------+
|  Legacy Database Tier |                        |  Modern Database Tier|
|  - MS SQL Server      |                        |  - Postgres Pro / HA |
+-----------------------+                        +----------------------+

Technology Stack

• Operating Systems: Astra Linux (Special / Common Edition), RED OS, Alt Linux.
• Directory Services: FreeIPA, ALD Pro, Samba DC, SSSD.
• Databases: Postgres Pro, PostgreSQL.
• Virtualization: RED Virtualization, zVirt, Proxmox VE.
• Email Systems: CommuniGate Pro, RuPost, Yandex 360, VK WorkSpace.
• Cryptography & PKI: CryptoPro CSP, ViPNet CSP, Rutoken, JaCarta.
• Backup Solutions: Cyber Backup, RuBackup.

Business Results

1. Zero Downtime: cross-realm trusts between Active Directory and Linux domains ensure uninterrupted user workflows during transition.
2. Full Compatibility: validated operation of PKI tokens, banking clients, ERP, office suites, and peripherals.
3. Unified Management: single sign-on (SSO), centralized policy enforcement, and domain credentials without per-machine manual setup.
4. Regulatory Compliance: transition of critical workloads to certified software platforms.