[Snort-users] My Webservers Are Showing Up In My Alerts
mkettler at ...4108...
Thu Jun 13 14:32:03 EDT 2002
Well, that's not surprising.. A lot of the alerts you see are likely to
things like codered, IIS cmd.exe and other such things, directory
These usually represent actual attack attempt on your webserver. It is
usually being done by a virus or an automated tool. It's not uncommon for a
webserver to see dozens of these a day. The net is a brutal place, and it's
not uncommon to see a network block have exploit attempts hundreds of times
per day. Particularly if snort is watching unfiltered traffic in front of
My best recommendation is that if the alerts bother you, and you KNOW that
your webserver cannot possibly be vulnerable, comment out the rule in the
.rules file. (for example, if all your webservers are BSD or Linux Apache
webservers it's pretty safe to comment out the cmd.exe rule).
It is important to note however that they aren't false alerts, they are
usually genuine attempts to penetrate your webserver to run malicious code.
Snort takes the stand of having alerts for attempts, even if they were not
successful, because most events that do result in a real compromise are
"noisy" in that they have a lot of failed attempts preceding the one that
At 07:18 PM 6/13/2002 +0000, Vadim Pushkin wrote:
>My snort.conf has the following entries:
># Above is all on one line
>var HTTP_SERVERS_PORT 8080
>Several of my rules have port 80 replaced with $HTTP_SERVERS_PORT.
>I am getting ALOT of alerts for these as either source or dest.
>How can I prevent this?
>Thank you kindly,
>Vadim (Ukranian Stallion) Pushkin
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