[olug] Email a report on SSH

[Lou Duchez]

Fair enough; fail2ban isn't wedded to port 22, so you can reconfigure it 
for a different port.

> I wouldn't run SSH on port 22, too much noise to deal with.
> On Apr 20, 2012 11:22 AM, "Lou Duchez"<lou at paprikash.com>  wrote:
>
>> You probably want to look into Fail2Ban.  It monitors your logs for failed
>> login attempts from a given IP (usually a certain number in a given span),
>> and then responds as you tell it to: it can (temporarily or permanently)
>> block that IP for port 22, it can send you an E-Mail, it can do both.  I
>> haven't ever tried to make Fail2ban cough up failed login details, but
>> maybe there's a way to do that.
>>
>> I don't consider a server tolerably secure until I've got Fail2Ban going
>> for SSH, FTP, POP3, IMAP, SMTP, and even SquirrelMail.
>>
>> How it works: Fail2Ban monitors the logs you specify and looks for the
>> regular expressions you specify (not to worry, it comes with a bunch of
>> examples you can flip on).  If it needs to block a port, it adds an entry
>> to iptables on the fly.
>>
>>
>>   Hello,
>>> I have set up an SSH tunnel into an Ubuntu 10.10 machine.  I disabled
>>> passwords and only use a private key.  I have been using it to proxy my
>>> web
>>> traffic securely when I travel.  Sometimes you just cant trust any old
>>> WIFI.    Recently my log files have been a little large.  the
>>> /var/log/auth.log file is showing multiple attempts to login.  I have
>>> turned the logging to verbose so I can see what is going on but I am not
>>> home all of the time.  This brings me to the issue.
>>>
>>> I have two questions.
>>>
>>> 1.  I was looking into port security and came across "Knocking".  Has
>>> anyone used "Knocking" to open a port?
>>>
>>> 2.  Anyone know a good place to get information on the setting it up to
>>> email me when someone tries to log in? I want to know the originating IP
>>> address and the password they used.  Passwords will all fail but I would
>>> like to know if someone is foolishly trying to brute force it and where
>>> they are coming from.  I would like an email sent to me each time it
>>> happens.  I did find a couple sites detailing a way to email when someone
>>> logs in, but I am more interested in finding out when someone fails.
>>>
>>> Any info you could pass on would be great.
>>> Thanks,
>>> David
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