Here's a super fun one where you SSH into different servers and have to use Bash/unix tools to find clues to get to the next one: https://overthewire.org/wargam

Here's a super fun one where you SSH into different servers and have to use Bash/unix tools to find clues to get to the next one: https://overthewire.org/wargames/bandit/ https://overthewire.org/wargames/bandit/