Course : Securing a Linux/Unix system
Practical course - 3d
- 21h00 - Ref. SRX
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 | Measure the security level of your Linux/Unix system |
| System security solutions |
| Setting up security for a Linux/Unix application |
| Establish network security |
Intended audience
Systems and network technicians and administrators.
Prerequisites
Good knowledge of systems and network administration.
Practical details
Hands-on work
Numerous exercises will be carried out on a network of Unix and Linux servers.
Course schedule
1 Introduction
- Why secure a system?
- Define a secure authentication strategy.
- Different encryption algorithms. Password encryption. Password verification.
- Examples of dictionary attacks.
2 Security and Open Source
- Corrections are made quickly, and bugs are made public.
- A hacker's approach: know the loopholes, know how to attack.
- Example of a vulnerability and security solution. Which solution?
3 Too complete an installation: the Linux example
- Debian, RedHat and other distributions.
- Avoid the trap of easy installation.
- Lighter kernel. Device drivers.
Hands-on work
Optimizing installations for safety management.
4 Local system security
- Examples of malice and inadvertence.
- Low permissiveness by default. File rights checking, efficient scripting and command diagnostics.
- Read-only FS: file attributes, availability and benefits. Tripwire tools.
- How long do you keep logs?
- The log analysis tool: logwatch. Reacting in real time: sample script. Using RPM as a HIDS.
- Setting up PAM in different contexts.
- Process execution containment. Terminology DAC, MAC, RBAC, context, model...
Hands-on work
Work on rights, logs and processes.
5 Network security
- Use a firewall? Use wrappers?
- Set up service access filters.
- Configure a firewall securely.
- Diagnostic commands. Setting up a NetFilter firewall under Linux.
- iptables philosophy and syntax.
- The xinetd super-server. Wrapper access restrictions, trace files.
- Audit active services. The ssh.
Hands-on work
Configure a firewall. Audit functional services.
6 Security audit utilities
- Proprietary products and free alternatives.
- Crack, John the Ripper, Qcrack.
- HIDS and NIDS intrusion detection systems.
- Test vulnerability with Nessus.
- Implementing a safety tool.
Hands-on work
Use of a few tools.
Customer reviews
4,6 / 5
Customer reviews are based on end-of-course evaluations. The score is calculated from all evaluations within the past year. Only reviews with a textual comment are displayed.
ÉMILIE W.
24/06/26
4 / 5
It’s a bit of a lot to take in for just three days. Still, the course is interesting.
FABRICE T.
24/06/26
5 / 5
The course content was perhaps a bit intensive over three days. The content and the trainer were extremely interesting.
YOUCEF H.
24/06/26
5 / 5
A very good course. I learnt a great deal. It also gave me the chance to brush up on the basics. I really enjoyed the practical sessions, which were well put together. The course is a bit packed, which means there isn’t much opportunity to go into things in depth.
Publication date : 06/10/2024
PARTICIPANTS
Systems and network technicians and administrators.
PREREQUISITES
Good knowledge of systems and network administration.
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
Systems and network technicians and administrators.
PREREQUISITES
Good knowledge of systems and network administration.
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TEACHING AIDS AND TECHNICAL RESOURCES
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
This programme is an original creation, developed by the teaching teams at ORSYS Formation. Any reproduction, representation, adaptation or use, in whole or in part, without the prior written authorisation of ORSYS, is strictly prohibited. ORSYS reserves the right to take any action necessary to protect its intellectual property rights.
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Remote class
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This programme is an original creation, developed by the teaching teams at ORSYS Formation. Any reproduction, representation, adaptation or use, in whole or in part, without the prior written authorisation of ORSYS, is strictly prohibited. ORSYS reserves the right to take any action necessary to protect its intellectual property rights.