Buenas listeros:
Les comento, tengo un servidor de correos en postfix con autenticacion en
dovecot, pero en ciertos dias el servidor sufre de ataques de diccionario (
o al menos eso creo), le instale el fail2ban para que bannee a las IP
que tratan de conectarse pero aun asi sigo teniendo problemas. Ahi va la
salida de logwatch : pastebin (http://pastebin.com/L3sb7trF#
dovecot: Authentication Failures:
sales rhost=222.218.142.194 : 20 Time(s)
paul rhost=222.218.142.194 : 18 Time(s)
admin rhost=222.218.142.194 : 16 Time(s)
daniel rhost=222.218.142.194 : 16 Time(s)
peter rhost=222.218.142.194 : 14 Time(s)
john rhost=222.218.142.194 : 12 Time(s)
office rhost=222.218.142.194 : 12 Time(s)
temp rhost=222.218.142.194 : 12 Time(s)
test rhost=222.218.142.194 : 12 Time(s)
anna rhost=222.218.142.194 : 10 Time(s)
cyrus rhost=222.218.142.194 : 10 Time(s)
help rhost=222.218.142.194 : 10 Time(s)
news rhost=222.218.142.194 : 10 Time(s)
thomas rhost=222.218.142.194 : 10 Time(s)
veronica rhost=222.218.142.194 : 10 Time(s)
vladimir rhost=222.218.142.194 : 10 Time(s)
webadmin rhost=222.218.142.194 : 10 Time(s)
webmaster rhost=222.218.142.194 : 10 Time(s)
amanda rhost=222.218.142.194 : 8 Time(s)
backup rhost=222.218.142.194 : 8 Time(s)
caroline rhost=222.218.142.194 : 8 Time(s)
contact rhost=222.218.142.194 : 8 Time(s)
demo rhost=222.218.142.194 : 8 Time(s)
donald rhost=222.218.142.194 : 8 Time(s)
edward rhost=222.218.142.194 : 8 Time(s)
evita rhost=222.218.142.194 : 8 Time(s)
jeff rhost=222.218.142.194 : 8 Time(s)
marketing rhost=222.218.142.194 : 8 Time(s)
martin rhost=222.218.142.194 : 8 Time(s)
merlin rhost=222.218.142.194 : 8 Time(s)
michael rhost=222.218.142.194 : 8 Time(s)
michel rhost=222.218.142.194 : 8 Time(s)
mike rhost=222.218.142.194 : 8 Time(s)
oracle rhost=222.218.142.194 : 8 Time(s)
postfix: 8 Time(s)
postmaster rhost=222.218.142.194 : 8 Time(s)
staff rhost=222.218.142.194 : 8 Time(s)
student rhost=222.218.142.194 : 8 Time(s)
thierry rhost=222.218.142.194 : 8 Time(s)
albert rhost=222.218.142.194 : 6 Time(s)
bdsistemas: 6 Time(s)
info rhost=222.218.142.194 : 6 Time(s)
james rhost=222.218.142.194 : 6 Time(s)
tom rhost=222.218.142.194 : 6 Time(s)
abc rhost=222.218.142.194 : 4 Time(s)
admins rhost=222.218.142.194 : 4 Time(s)
alex rhost=222.218.142.194 : 4 Time(s)
dan rhost=222.218.142.194 : 4 Time(s)
elena rhost=222.218.142.194 : 4 Time(s)
Gracias por la ayuda estimados.
Luis Roman
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