Re: Fw:"NERP" DoS attack possible in Oracle

From: Paul Schenk (paul.r.schenkat_private)
Date: Wed Jan 06 1999 - 12:25:30 PST

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In fact, on HP-UX 10.20, Oracle 7.3.3, in listener.log you get:

06-JAN-99 16:15:45 * 12569
TNS-12569: TNS:packet checksum failure

And tnslistner continues happily along at ~0 CPU usage, it even accepts and
 processes new connections fine.

So its either an Oracle 8/NT thing or a misconfiguration

Pablo Luis Bucich <pbucicat_private> writes:

>        I'v tested that in :
>
>        SQL*Netv2 at HPUX 10.20 with Oracle 7.3.3,
>        SQL*Netv2 at HPUX 9.04 with Oracle 7.1.4,
>
>with zero & one SQL*Netv2 sessions opened, and there is no problem.
tnslsnr
>goes to sleep immediately when the telnet connection has closed.
>Can be some previous load/resource problem ? Or OS-dependant ?

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