Atac informatic respins

Recent, unul din servere a blocat un atac de tip brute-force de pe o adresă IP din România:

Time: Fri Aug  8 13:54:54 2014 +0300
IP:       89.42.25.45 (RO/Romania/server6.publicitateprinemail.ro)
Failures: 5 (sshd)
Interval: 3600 seconds
Blocked : Permanent Block

Log entries:

Aug  8 13:54:49 ro2 sshd[104342]: pam_unisshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.42.25.45  user=root
Aug  8 13:54:50 ro2 sshd[104347]: pam_unisshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.42.25.45  user=root
Aug  8 13:54:51 ro2 sshd[104347]: Failed password for root from 89.42.25.45 port 48487 ssh2
Aug  8 13:54:51 ro2 sshd[104342]: Failed password for root from 89.42.25.45 port 35087 ssh2
Aug  8 13:54:52 ro2 sshd[104354]: pam_unisshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.42.25.45  user=root

Adresa IP a fost blocată imediat de firewall.