Challenges

Focused, hands-on problems for sharpening your DevOps and server-side skills. Some teach specific concepts while others mirror real-world scenarios. Every challenge includes hints, feedback, and automated solution checks.

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Restrict SSH Bastion Access by User Role

by Ivan Velichko

Harden a bastion host so only admins can get a shell on it, operators can open tunnels to arbitrary destinations, and developers can reach only the one internal service they actually need.

#ssh #tunnel #port-forwarding #bastion

Submissions: 57/94

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Hard, on Linux, Networking

Forward a Port Without Starting a Proxy Process

by Ivan Velichko

Prove your networking skills by mapping one network address to another without starting any additional processes.

#port-forwarding #iptables #socket #container-networking

Submissions: 274/597

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