brute force ssh attack
Deron Meranda
deron.meranda at gmail.com
Wed Apr 27 17:06:13 UTC 2005
On 4/27/05, Aleksandar Milivojevic <amilivojevic at pbl.ca> wrote:
> Daniel Kirsten wrote:
> > there are numerous brute force ssh attacks in the web.
> > I was quite curious, and for fun, I created the typical
> > user accounts and set easy to guess passwords....
>
> Generally, very bad idea. Unless you know exactly what you are doing,
> which you obviously don't.
Also, learn to use ssh RSA keys rather than allowing ssh passwords.
Even if you have keys you still need to disable passwords for it
to be secure. Doing that prevents dictionary password-guessing
attacks. To disable ssh password access, edit /etc/ssh/sshd_config
and set
PasswordAuthentication no
You may also want to disable root via ssh as well with
PermitRootLogin no
(After changing config either reboot or 'service sshd restart')
--
Deron Meranda
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