Course: VPNs in theory and practiceVPN

The course is available on demand.

Remote training: online live with a trainer and a group. Available on demand, at time and place convenient to you, for groups of at least 3 participants.

4.8/5 (31)
exempt from VAT

Price: 490 EUR

refreshments included

computer station included

first minute (30+ days before) - 3%

Categories: Linux administration, Networking

Participants learn the principles of virtual private networks and configuration details of most common VPN solutions on Linux.


1 day


  1. Overview of related concepts: network protocol stack, ISO/OSI model
    • frame structure at each layer
    • IP, ICMP, UDP and TCP protocols, reliable connections, retransmissions
  2. Encryption, symmetric and public-key, RSA
  3. Security, man-in-the-middle attacks
  4. VPNs
    • common uses, operation principles
    • examples
    • when not to use
  5. IPsec, IPsec on Linux
  6. StrongSWAN, OpenSWAN
  7. Eavesdropping
  8. PPTP (Point-to-Point Tunelling Protocol)
    • when to use
    • PPTP/MPPE architecture, Linux as a PPTP server with Windows as a client
    • Linux as a PPTP client
  9. OpenVPN

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Audience and prerequisites

The course targets at least intermediate-level Linux system/network administrators.

Participants must have good knowledge of general Linux administration and network configuration.


Course participants receive completion certificates signed by ALX.

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