Servers and services
The services a network takes for granted: mail that arrives, names that resolve, logins that work, backups that restore. We install them on Linux and keep them in order.
Mail servers with anti-spam and anti-virus, mailboxes and aliases organized by department, access from any client.
DNS and Internet services
Domains, authoritative and recursive DNS, websites and web applications with certificates that never lapse.
Authentication and access
One place where you decide who gets onto the network, the equipment and the services. When someone leaves, they are disabled once.
File sharing
Shared folders by group and department, permissions that mirror the organization chart, off-site access through the VPN.
Virtualization
Several services on the same hardware, each in its own virtual machine: update, move or restore one without touching the others.
Databases
Installation, consistent backups and maintenance of the databases behind business software and applications.
Backups that restore
A backup is worth as much as the last time it was restored. We keep programs, configuration and data apart, keep several copies in different places and test the restore, not just the backup.
Monitoring, custom-made when needed
Servers and equipment are under continuous watch. When the off-the-shelf tool is not enough, we write the missing piece ourselves in C: that is how our data collectors for Wi-Fi and network equipment came about.
Free software, by choice
Wherever possible we use free software: no licenses expiring by surprise, no black boxes, open formats that will still be readable in ten years. Where commercial software is needed, as with business software, we install it on solid Linux foundations.
Distributions
Slackware for our own servers, Debian and Rocky Linux where the software or the client requires them. The service decides, not habit.