Morgan said:
Can one know anything about webhotell security?
What *is* webhotell security? Do you mean web hosting security?
...server OS? Wich is to prefere?
are there other factors?
Yes - don't run any services (e.g. FTP, samba, etc) that you don't plan on
using.
Don't run any services that pass passwords in clear text (FTP, telnet,
etc). If you're doing a password protected website, use HTTPS. Make sure
your users choose good passwords. If possible enforce a strong password
policy. <
http://www.theregister.co.uk/2004/05/28/password_advice/>
Use an obscure hardware architecture so that even if a cracker does manage
to inject some binary code onto your system it will be useless. I'd
recommend Sparc, PowerPC, Alpha or at a push AMD64. (It is also useful
that those happen to be very good processors, and are all supported by
OpenBSD.)
Keep everything patched up.