camun
(usa Ubuntu)
Enviado em 26/04/2013 - 08:20h
Caros amigo, tenho um servidor de email com postfix, dovecot e amavis rodando, porem esses ultimos dias existe diversas tentativas de usuario tentando se logar em meu servidor como podem ver nos logs abaixo, ja tentei bloquer o IP que vi que era o mesmo em todas as conexoes mas nao adianto alguem saberia um forma melhor?
segue log
Apr 26 08:19:17 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<buzz>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:19:21 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<byteme>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:19:03 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<butthead>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:19:07 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<button>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:20:51 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<carl>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:20:55 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<carlos>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:20:59 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<carmen>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:21:04 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<carol>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:21:08 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<carole>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5
Apr 26 08:21:12 mail dovecot: pop3-login: Disconnected (auth failed, 1 attempts): user=<carolina>, method=PLAIN, rip=24.227.55.206, lip=192.168.5.5