From: "Tang Ho Yim" <[EMAIL PROTECTED]>
I got a error messages from /var/log/auth.log which is about sshd......
.....sshd : reverse mapping checking getaddrinfo for core-01.148.rdcw.com failed -
POSSIBLE BREAKIN ATTEMPT !
all my sshd_config is default setting except I have change to "PasswordAuthentication
NO , PermitEmptyPasswords NO , and ChallengeResponseAuthentication NO"
Is that I am being hack ?
last command show who is login before but it seem ok....
What should I do ?
Somebody is trying; and, that somebody is failing. You need something
akin to "DenyHosts" (which works on tcpwrappers) or one of the other
BSD compatible tools of a roughly similar sort. I'd suggest wandering
through the list archive. In the last month or two we've been over this
before, repeatedly.
{^_^}
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