Nethence Architectures & Services

Turning to the Open Source: pbraun@nethence.com

Infrastructures Consulting

• Redundant BSD powered firewalls & WAN links (IPSEC)
• Layer 3 (BSD powered) vs Layer 5-7 (NGINX) load-balancers
• Strong anti-spam Postfix front-ends
• BIND+DHCPD+LDAP+CAS for DNS, DHCP and SSO-enabled Directory Server/Service
• KVM + XEN + Docker/Kubernetes powered OpenStack and SaltStack
• Grafana vs Kibana performance graphs
• Ceph vs Apache Hadoop for Storage Facilities
• Gollum, Redmine Wiki or Moodle for Documentation Management
• Redmine for R&D bug tracker as well as for IT helpdesk
• GitLab + ICEScrum vs OrangeScrum vs Tuleap for Software Development Management
• Slack.com or XMPP Jabber for teams' collaboration

Migrations & Convertions

Migrating Microsoft datastores and services to Open Source facilities e.g.:

• MS Exchange to BlueMind or (Postfix + Cadaver/CalDAV + Sieve + Dovecot + Roundcube)
• MS Active Directory to OpenLDAP or Samba v4 or Apache DS + CAS SSO
• Migrating Windows Java services to Linux/Java
• Migrating Windows Oracle Database instances to Linux/Oracle or possibly Linux/MySQL Linux/MariaDB

Getting rid of old hardware and old P2Ved VMs:

• Transporting ok-hardware or getting rid of obsolete-hardware once the systems are P2Ved or apps are Dockerized
• P2V by any means to migrate systems to other datacenters with almost-no-downtime
• Migrating applications to Docker containers