Fred,
It is not complicated finding SSH running on a different port using Nmap:
i.e. nmap -p- -sV <hostname/IP>
Suggest adding something like Fail2Ban to slow down the password guess
attempts against SSH.
Cheers,
Frank Pikelner
On Wed, Jul 12, 2017 at 2:49 AM, fred roller <fredroller66@xxxxxxxxx> wrote:
>
>
> On Wed, Jul 12, 2017 at 2:19 AM, Sylvia Sánchez <lailahfsf@xxxxxxxxx> wrote:
>>
>>
>> Good morning,
>>
>> Linux has no viruses. Why would anyone want an anti-virus then? It is
>> possible to install security tools of course, but those come with your
>> distribution, you don't need to look up for external stuff.
>>
>
> Wrong. Viruses (Now accepted and not viri) for Linux exist. Tho I can no
> longer cite the information, when I was working with the systems the monthly
> output of new virus for Linux vs. Windows was in the neighborhood of 1,000
> vs. 10,000 respectively. Viruses tended to need predictable systems and
> predictable user habits to be most effective for which Windows is painfully
> predictable with admin access out of the box. Linux's strength came in the
> fact that we tend to move stuff around and customize things so that nothing
> is where is ought to be. :D By example, ask anyone who has SSH pointed out
> to the web and still on port 22. If they have checked there access logs it
> will be full of, hopefully, failed log-in attempts (hundreds daily) as the
> bots know to check port 22 and will try common pw looking for the lazy
> admin. I changed my ports as a first line basic defense. In short don't be
> what they expect. If memory serves root kits were the bigger threat for
> Linux. However, no matter the OS the best defense against threats still
> resides between the chair and keyboard.
>
> My 2 bits,
> Fred
>
>
>
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