Is the training Qualiopi certified?

Yes, Learni is a Qualiopi-certified training organization. This certification guarantees the quality of our courses and enables funding through OPCO and other mechanisms.

How can I fund my training?

Our courses are eligible for OPCO funding. Learni supports you through the funding process. A personalized quote is available upon request.

What are the prerequisites for this training?

The prerequisites for the Training: Master iptables: Secure and Configure a Linux Firewall training are: Comfort with using Linux from the command line, basic knowledge of TCP/IP networking. A preliminary interview validates your eligibility.

Is the training available in person?

Yes, the Training: Master iptables: Secure and Configure a Linux Firewall training is available in remote. The format can be adapted to your needs (inter, intra, custom).

Training: Master iptables: Secure and Configure ... | Learni

The story of Learni

Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.

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Methods, approaches, and teaching resources

The Training: Master iptables: Secure and Configure a Linux Firewall training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.

The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.

Teaching resources provided

To ensure the quality of the Training: Master iptables: Secure and Configure a Linux Firewall training, Learni provides the following teaching resources:

Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, video projector or interactive touchscreen (for remote sessions)
Training environments installed on workstations or accessible online
Course materials, practical exercises, and supplementary resources
Post-training access to materials and teaching resources

For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.

* contact us for remote feasibility** ratio varies depending on the training followed

Assessment methods

The assessment of skills acquired during the Training: Master iptables: Secure and Configure a Linux Firewall training is carried out through:

During training: case studies, practical exercises, and professional scenarios
At the end of training: self-assessment questionnaire and skills evaluation by the trainer
After training: training completion certificate detailing acquired skills

Training accessibility

Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.

Training objectives

Understand the role and operation of iptables in network security

Create, analyze, and modify filtering rules on Linux

Acquire the knowledge to establish an appropriate security policy via iptables

Know how to troubleshoot and maintain an iptables firewall in production

Implement advanced scenarios (NAT, connection state, logging, redirections…)

Automate and make firewall settings persistent

Training program

Module 1Introduction, architecture and use cases of iptables

Presentation of the role of a firewall, Netfilter architecture under Linux, packet path and chains, state and kernel modules, introduction to iptables syntax. Exercises in inspecting local network traffic and first filtering tests.

Module 2Creating and managing filtering rules

Advanced rule syntax: tables, chains, targeting interfaces, filtering on IP, ports, protocols. Connection states (state, conntrack), user and group filtering, fine control of incoming and outgoing traffic, log management and logging, prevention of common attacks (DoS, spoofing, port scanning). Real cases: block/allow services, limit attacks, practical exercises.

Module 3Administration, persistence and advanced scenarios

Backup and restoration of configurations, automation at startup (iptables-save, iptables-restore, custom scripts), troubleshooting and rule analysis (iptables -L, -n, -v), NAT (SNAT, DNAT, masquerading), multi-zone/routing configuration, port redirections, integration into complex architectures (DMZ, VPN, hosting). Audit workshops, reset, configuration replication. Discussions on nftables, migration and prospects.