ssh login scans!?

[jorge]

wer macht sowas und zu welchem zweck?
sind das "bots" die von gehackten linux maschinen versuchen user/passwort - sequenzen zu knacken?
ich hab diese einträge jedenfalls fast täglich auf meiner firewall, von verschiedenen ip's -
und wenn ich dann schau was da läuft, scheints meistens linux zu sein...

Failed logins from these:
admin/password from 218.38.14.93: 2 Time(s)
chris/password from 218.38.14.93: 7 Time(s)
guest/password from 218.38.14.93: 2 Time(s)
info/password from 218.38.14.93: 2 Time(s)
library/password from 218.38.14.93: 2 Time(s)
linux/password from 218.38.14.93: 1 Time(s)
mailtest/password from 218.38.14.93: 9 Time(s)
mysql/password from 218.38.14.93: 2 Time(s)
oracle/password from 218.38.14.93: 2 Time(s)
postgres/password from 218.38.14.93: 4 Time(s)
root/password from 218.38.14.93: 2 Time(s)
service/password from 218.38.14.93: 10 Time(s)
shell/password from 218.38.14.93: 2 Time(s)
test/password from 218.38.14.93: 2 Time(s)
testuser/password from 218.38.14.93: 11 Time(s)
webmaster/password from 218.38.14.93: 2 Time(s)