I want to learn some networking and thought playing Bandit would be a fun way to do my first steps. However, I’m using the internet via an organisation’s network and most of the ports are blocked, so no ssh. I’m aware of the list of wargames on the net, but I thought rather than doing hours of checking them out manually, maybe someone experienced could tell me which wargames are both suitable for someone beginning at absolute zero knowledge and can be accessed with nothing but regular web browsing tools available.

Your help is much appreciated.