[FUG-BR] [OFF TOPIC] Ataques...

[Junior Pires]

Bom dia pessoal, eu estou sendo vítima de alguns ataques ao meu servidor
de e-mail.

De algum tempo pra cá, eu sando uma olhada em meus logs, notei que sempre
há uma coisa desse tipo:

Dec  6 21:11:01 mail sshd[63814]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:05 mail sshd[63829]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:06 mail sshd[63831]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:08 mail sshd[63834]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:10 mail sshd[63836]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:12 mail sshd[63839]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:15 mail sshd[63841]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:16 mail sshd[63843]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:19 mail sshd[63850]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:21 mail sshd[63858]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:24 mail sshd[63860]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:26 mail sshd[63862]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:28 mail sshd[63864]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!
Dec  6 21:11:30 mail sshd[63866]: reverse mapping checking getaddrinfo for
ns.speedyserver3.co.uk
failed - POSSIBLE BREAKIN ATTEMPT!



Já instalei o brutecblock, que resolveu por algum curto tempo, mas agora
está voltando de novo...

O que vocês me recomendam pra solucionar essa questão?


Grato desde já.


-- 
Junior Pires
Assistente de Informáica
CPD
Gujão Alimentos.
Tel: (75) 3244-2121 (Ramal 202).


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