Why do you think it's a bug?  ntop tracks sessions for your.  What it
doesn't do is full stateful connection tracking, and it's not the router
that drops the packet.

ntop sees a packet from port whatever on host whatever to port something on
host something.

That's a session.

The fact that it never get's an ACK back, and the fact that some upstream
router drops it, doesn't change what ntop sees, which is the packet level
information.

After a while (the timeout), the session disappears.

IMHO: Nope, sorry, no bug - functioning as designed

-----Burton


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Igor
Schein
Sent: Friday, February 22, 2002 12:25 PM
To: [EMAIL PROTECTED]
Subject: [Ntop] issues with reporting


2) My network is behind a firewall, and I don't allow http out.  All
browing goes through a proxy.  Real Player in default installation
tries to send data to http port on chanrr1.real.com once in a while
(down with spyware!!) and those packets get dropped.  However, for at
least 20 minutes after a packet got dropped, there's a listing in IP
Protos -> Sessions table like this:


172.17.0.208:1391
                 chanrr1.real.com:http
                                      248
                                         0
                                          02/22/02 13:10:16
                                                           02/22/02 13:10:37

5:07

The 3rd and 4th column indicate that a small packet was dropped.  The last
column shows the age of the pseudo-connection, 5min in this case.
I believe it's a bug.  I'm using Feb 15 snapshot on RH-7.2 machine, and
all traffic is mirror to a port on a switch level.


_______________________________________________
Ntop mailing list
[EMAIL PROTECTED]
http://listmanager.unipi.it/mailman/listinfo/ntop

Reply via email to