Linux Systems and Security


Past Projects

We have worked extensively with Linux since 1995, including the following distributions: Red Hat, CentOS, Debian, Ubuntu, SuSE, Slackware, Snapgear, OpenWRT. Some of our past projects include:
  • Migrate the server environment to the cloud for a banner ad provider using AWS, including virtual hosting with EC2, mass storage with S3, DNS with Route 53, and database hosting (MySQL and Oracle) with RDS.
  • Installation and lockdown of new Linux servers, including disabling of unnecessary daemons and open TCP/UDP ports
  • Embedded Linux with serial console and compressed file systems
  • Installing and configuring Linux (and Windows) virtual machines using Xen, VMware, and VirtualBox.
  • Architecting, implementing, and deploying database-backed Web sites
  • Performing secure online credit card authorizations, captures, voids, and refunds with multiple merchant accounts.
  • Installing and configuring Oracle on Linux.
  • Deploying remote access solutions for small businesses, including VPNs and browser-based remote desktops.
  • Creating and maintaining secure PCI-compliant server environment
  • Performance tuning of relational databases, including schema normalization, indexing, query optimization, backup.
  • Linux backup solutions including disk mirroring, database mirroring, magnetic tape backup.
  • Designing and deploying a sales database for a direct marketing company to compile revenue data from multiple sales channels, including Web, phone, and mail orders.
  • Designing and deploying a metadata database for digital object identifiers (DOIs), including XML bulk loader and URL pinger.
  • Linux SCSI device (sg) driver programming for magnetic tape recovery.
  • Designing and prototyping of specialized VoIP hardware using Asterisk.
  • Deploying and managing public WiFi services using NoCatAuth and Wifidog.
  • Configuring user authentication with OpenLDAP, including replication

Let us find a
solution for you

Electrical Science has expertise in a variety of fields.
We specialize in finding elegant solutions to difficult
and esoteric problems.

Voice Logger Audio Retrieval

Recovery and conversion of recordings from almost any voice logger.

Legacy Services

Give us your tired, your obscure, your crufty systems yearning to be free.

General Research

Let us research the details for you in a variety of general and esoteric topics.