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 Maîtriser iptables : Sécuriser vos réseaux sous Linux training are: Maîtrise de base de l’administration Linux, connaissances fondamentales en réseaux (TCP/IP, ports, services). A preliminary interview validates your eligibility.

Is the training available in person?

Yes, the Maîtriser iptables : Sécuriser vos réseaux sous Linux training is available in distanciel. The format can be adapted to your needs (inter, intra, custom).

Maîtriser iptables : Sécuriser vos réseaux sous ... | 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 Maîtriser iptables : Sécuriser vos réseaux sous Linux 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 Maîtriser iptables : Sécuriser vos réseaux sous Linux 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 Maîtriser iptables : Sécuriser vos réseaux sous Linux 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 access terms and deadlines

Training objectives

Comprendre le fonctionnement du filtrage réseau sous Linux avec iptables

Savoir concevoir et implémenter des politiques de sécurité réseau efficaces

Apprendre à écrire, adapter et maintenir des règles iptables complexes

Diagnostiquer et résoudre des problèmes de trafic bloqué ou mal redirigé

Automatiser le déploiement de configurations iptables sur plusieurs serveurs

Training program

Module 1Fondamentaux des pare-feux et de iptables

Présentation de la sécurité réseau sous Linux, introduction à Netfilter/IPTables, architecture et tables (filter, nat, mangle, raw), notions de chaînes (INPUT, OUTPUT, FORWARD), compréhension des états de connexion, comparaison avec nftables. Atelier : visualisation de l’état actuel du pare-feu et analyse des politiques par défaut.

Module 2Création et gestion avancée des règles iptables

Construction de règles personnalisées : filtrage par adresse IP, ports, protocoles, interfaces réseau. Configuration de NAT (masquerading, DNAT, SNAT, redirections de port). Optimisation de la sécurité (limitation de connexions, détection de scans, blocage de DoS simples). Atelier : élaboration d’une politique restrictive pour un serveur web et SSH.

Module 3Audit, dépannage, automatisation et bonnes pratiques

Audit des règles : logs, analyse du trafic bloqué (LOG, iptables-save, iptables-restore), interprétation des logs kernel. Bonnes pratiques pour la sauvegarde et la restauration des configurations. Introduction à l’automatisation avec des scripts Bash et outils d’orchestration (Ansible). Atelier pratique : déploiement d’un set de règles sur plusieurs systèmes, gestion des exceptions, dépannage de cas concrets transmis par les participants.

Evaluation method

Etude de cas en fin de formation : conception d’une politique de sécurité complète pour un scénario donné
Contrôle continu à travers des exercices pratiques
Questions-réponses interactives après chaque module