Follow up to: "Brute-Force SSH Server Attacks Surge (InformationWeek)"
* default debian's "rootlogins: on" is bad;
* it's not easy to make multiple port sshds (dummy and real) due to bad /etc/init.d/ssh;
* i have login-only and work-sh-only accounts;
* script for login-only ones: ftp://flower.upol.cz/sys-olecom/+.profile
(i wonder and couldn't check it yet: if ^C from ssh/tty can come before
`set +i -e`, then script will leave you with root shell).