iptables on the xymon server could allow a list or range of IP addresses
and/or block any address outside the segments that contain servers you want
to allow. That can be implemented right now, outside xymon, to limit the
risk.
Ralph Mitchell
On Fri, Dec 7, 2012 at 10:41 PM, Shawn Heisey <user-5d0d01dba542@xymon.invalid> wrote:
On 12/5/2012 1:38 PM, Novosielski, Ryan wrote:
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My understanding is that it's fairly easy to do, also. I don't know if
having a proxy in between helps at all or any of that, but my
understanding is that what's sent is fairly simple and plain text (I
believe there's info about the protocol in the manual).
That said, I'm not 100% sure what nefarious thing someone could do
with that information. I guess they could open the rlogin port or
something and then send a status message to indicate it's still closed?
Nefarious users can create false alarms that must be investigated. They
can "drop" your host entries and therefore wipe out incredible amounts of
RRD graph history. If you have tests with delayed notification, it would
be possible to prevent notifications on real alarm conditions. There are
probably other nasty things I haven't thought of.
Thanks,
Shawn
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