The approach of basing security on information denial is very inefficent as open source is demoustering in those current days.
Not true, that is a totally different thing altogether and a misrepresentation of the meaning of open source.
Withholding a users IP from other users is not information denial, it is privacy protection - other players have no business knowing your IP just like they have no business knowing your phone number or real name if you choose not to divulge it. Freely available source code has nothing to do with this.
A server admin might personally choose to run a game server and expose the personal information of players to other players or DMs with features or scripts or such - that is not disputed and it is the choice of the server admin, but I do not think that this sort of personal information exposure should be default behaviour (or even optional behaviour) in Crossfire. It should be confined to the server logs. It is in my opinion, a bad design decision to allow this sort of information to be automatically exposed to either the DMs or the other players.
If a server admin were to expose this sort of information about players I would hope that a disclaimer to this effect was clearly posted for the users that this was the practice. I would be willing to bet that there could be legal repurcussions to not doing this in certain jurisdictions...
ISP security is not an issure since you cannot fix it.
Well I cannot guarentee your security walking down the street either but this does not give me personally the right to drive on the sidewalk. Good behaviour is everyone's obligation on the internet and I think handing out other peoples IPs is not good behaviour. Also ISPs can take actions against both their users and other users on other ISPs and although it is unlikely a game server admin could get into direct trouble over an incident between two players, there have been, I believe, games which lost a lot of respect/ and players over such incidents.
Anyway this has gotten way to heavy. I am such a troll magnet aren't I...
