Re: Interesting traffic...

["Scott Taylor" <scottt () soccer com>]

The other weird thing is the window size:
WIN: 0xFFFF is 65535 which is the default cisco
type window size.





...Also I didn't cc: the last message to the
list. If you could then someone could tell you
if I was off on the last message.

---- Begin Original Message ----

From: Mark Mason <mark.mason () grandecom com>
Sent: Tue, 26 Feb 2002 16:11:35 -0600
To: "'snort-users () lists sourceforge net'"<snort-
users () lists sourceforge net>
Subject: [Snort-users] Interesting traffic...


Finally some interesting traffic. I know the IP
is spoofed, but is there any
way snort might have gotten the direction of the
traffic confused ? As it is
it appears to come from inside my network (it
could happen) the obscured
address is a real IP, but doesn't appear to be
up now. It is interesting
that the MSS is very high on the first packet.
Any idea what this could be
caused by ?

[**] [1:528:2] BAD TRAFFIC loopback traffic [**]
[Classification: Potentially Bad Traffic]
[Priority: 2]
02/26-11:25:30.667238 127.0.0.1:15158 ->
xxx.xxx.xxx.xxx:6473
TCP TTL:63 TOS:0x0 ID:9155 IpLen:28 DgmLen:68 DF
IP Options (2) => LSRR NOP
******S* Seq: 0x1BE3F7DA  Ack: 0x0  Win:
0xFFFF  TcpLen: 40
TCP Options (6) => MSS: 16344 NOP WS: 1 NOP NOP
TS: 281854 0

[**] [1:528:2] BAD TRAFFIC loopback traffic [**]
[Classification: Potentially Bad Traffic]
[Priority: 2]
02/26-11:25:33.657238 127.0.0.1:15158 ->
xxx.xxx.xxx.xxx:6473
TCP TTL:63 TOS:0x0 ID:9156 IpLen:28 DgmLen:68 DF
IP Options (2) => LSRR NOP
******S* Seq: 0x1BE3F7DA  Ack: 0x0  Win:
0xFFFF  TcpLen: 40
TCP Options (6) => MSS: 1460 NOP WS: 1 NOP NOP
TS: 282154 0

[**] [1:528:2] BAD TRAFFIC loopback traffic [**]
[Classification: Potentially Bad Traffic]
[Priority: 2]
02/26-11:25:36.657238 127.0.0.1:15158 ->
xxx.xxx.xxx.xxx:6473
TCP TTL:63 TOS:0x0 ID:9157 IpLen:28 DgmLen:68 DF
IP Options (2) => LSRR NOP
******S* Seq: 0x1BE3F7DA  Ack: 0x0  Win:
0xFFFF  TcpLen: 40
TCP Options (6) => MSS: 1460 NOP WS: 1 NOP NOP
TS: 282454 0





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---- End Original Message ----




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