Snort mailing list archives

Re: same SRC/DST


From: Kyle R Maxwell <kylemaxwell () yahoo com>
Date: Tue, 25 Dec 2001 07:57:30 -0800 (PST)

Looks like a Land attack (Google for land.c). You probably want to
watch for the whole packet to get the MAC addresses and make sure that
such an attack is not being launched from one of your (possibly
compromised) machines.


--- James <the_saint_james () yahoo com> wrote:
12/24-13:38:42.005838  [**] [1:527:2] BAD TRAFFIC same SRC/DST [**]
[Classification: Potentially Bad Traffic] [Priority: 2] {TCP}
3.0.0.2:1452 -> 3.0.0.2:5103
12/24-13:38:45.105850  [**] [1:527:2] BAD TRAFFIC same SRC/DST [**]
[Classification: Potentially Bad Traffic] [Priority: 2] {TCP}
3.0.0.2:1452 -> 3.0.0.2:5103
12/24-13:38:50.995873  [**] [1:527:2] BAD TRAFFIC same SRC/DST [**]
[Classification: Potentially Bad Traffic] [Priority: 2] {TCP}
3.0.0.2:1452 -> 3.0.0.2:5103
12/24-13:39:05.195928  [**] [1:527:2] BAD TRAFFIC same SRC/DST [**]
[Classification: Potentially Bad Traffic] [Priority: 2] {TCP}
3.0.0.2:1452 -> 3.0.0.2:5103
12/24-13:39:27.496015  [**] [1:527:2] BAD TRAFFIC same SRC/DST [**]
[Classification: Potentially Bad Traffic] [Priority: 2] {TCP}
3.0.0.2:1454 -> 3.0.0.2:5103
12/24-13:39:30.496026  [**] [1:527:2] BAD TRAFFIC same SRC/DST [**]
[Classification: Potentially Bad Traffic] [Priority: 2] {TCP}
3.0.0.2:1454 -> 3.0.0.2:5103

I am sniffing the Ethernet interface of our DS3 gateway, so it either
went
in or out. This network, 3.0.0.0 (General Electric Company) is not
part of
our address space. Can anyone give me more info other than saying it
is
spoofing ? Sorry, no full headers.

james





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=====
Kyle Maxwell [kylemaxwell () yahoo com]
"That that is is that that is not is not."

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