From: Ramin Alidousti <ramin@cannon.eng.us.uu.net>
To: Raymond Leach <raymondl@knowledgefactory.co.za>
Cc: blacknet@simplyaquatics.com, netfilter@lists.samba.org
Subject: Re: Strange log entry ...
Date: Mon, 8 Jul 2002 10:36:56 -0400 [thread overview]
Message-ID: <20020708143656.GR25368@cannon.eng.us.uu.net> (raw)
In-Reply-To: <1026138591.27153.77.camel@rayw>
On Mon, Jul 08, 2002 at 04:29:51PM +0200, Raymond Leach wrote:
> On Mon, 2002-07-08 at 16:07, Ed Street wrote:
> > Hello,
> >
> >
> > Looks like station 10.0.0.19 on eth2 tried to ping 199.181.167.201 and
> > it was droped.
> >
> I've checked the process list on 10.0.0.19 and also restarted it just to
> make sure, and there is nothing that is trying to ping anywhere.
>
> Isn't ICMP CODE 0 TYPE 0 a reply? Doesn't this log entry represent
> 10.0.0.19's reply to an echo request?
Don't you have any backdoor?? If not, then 10.0.0.19 might be replying
to a spoofed ping from the inside...
Ramin
>
> Ray
> > Ed
> >
> > -----Original Message-----
> > From: netfilter-admin@lists.samba.org
> > [mailto:netfilter-admin@lists.samba.org] On Behalf Of Raymond Leach
> > Sent: Monday, July 08, 2002 10:07 AM
> > To: netfilter@lists.samba.org
> > Subject: Strange log entry ...
> >
> > Hi
> >
> > Can anyone tell me what this is?
> >
> > Jul 8 16:04:23 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth0
> > SRC=10.0.0.19 DST=199.181.167.201 LEN=1044 TOS=0x00 PREC=0x00 TTL=254
> > ID=18763 DF PROTO=ICMP TYPE=0 CODE=0 ID=6666 SEQ=0
> > Jul 8 16:04:26 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth0
> > SRC=10.0.0.19 DST=199.181.167.201 LEN=1044 TOS=0x00 PREC=0x00 TTL=254
> > ID=18764 DF PROTO=ICMP TYPE=0 CODE=0 ID=6666 SEQ=0
> >
> > I do not allow incoming echo requests to this machine. How the echo
> > reply is generated beats me ...
> >
> > Ray
> >
> >
>
next prev parent reply other threads:[~2002-07-08 14:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-08 14:07 Strange log entry Raymond Leach
2002-07-08 14:07 ` Ed Street
2002-07-08 14:29 ` Raymond Leach
2002-07-08 14:36 ` Ramin Alidousti [this message]
2002-07-08 17:15 ` Ramin Alidousti
2002-07-08 14:39 ` Ed Street
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