I agree with Morning Wood 100% .... Running sshd on port 22 anymore in
this day
and age is really not a smart decision, as you WILL be subject to these script
kiddies' scanners.
It has become as rampant as netbios, and other very common windows
vulnerability
scans in my opinion.
I was also hit with a very hard brute force attack on several of our
ssh servers
about a year ago, and immediately moved ssh to a bizarre port, and setup an IP
specific allow policy at my firewall. I have not been a victim of
another brute
force yet.
Again, as Morning Wood stated, this will not make the connection 100%
secure, as
someone in your IP allow list can still try and brute force your
sshd, but this
helps immensely..
Good luck to you.
Shane
oc192 security
Quoting Morning Wood <se_cur_ity@hotmail.com>:
Hey... just a question - is there some new expoit for SSH, or some new
script? My SSHd is getting HAMMERED today, starting about an hour
ago.... this is nuts! I currently have 10+ script-kiddieZ banging away
at one of my SSHd boxes... (which is up to date, mind you).
<begin suggestion>
very common, did you just start running a sshd or just now bothered to look
at the logs?
suggest employing wide reaching ip deny rules ( or a few explicit allow
rules ).
another idea is to just move your sshd off of port 22, this will cut down on
all but dedicated
( read genuine ) attempts to brute your sshd.
</end suggestion>
M.W
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