[auton-users] Auton Lab Data Transfers to Offsite Networks: Please Read

[Michael J. Baysek]

Hi Lab

I want to take a minute to point out that we are under some limitations 
when transferring data across the Internet.  In order to maintain 
quality of service to the entire university, restrictions on Internet 
traffic usage is placed on every machine on the network. 

On Friday, one or more of you transferred in excess of 10 GB of data 
over the Internet using LOS1.  Now, transferring this much inside of CMU 
is perfectly fine, but outside of CMU, I get a notice.  Too many notices 
and a machines network connection can be suspended indefinitely by 
computing services without notice.

It is for this reason that I ask you - If you have large amounts of data 
to transfer to (or from) offsite networks, please contact me in advance 
so that I can arrange for this to be done in a way that can circumvent 
the bandwidth limitations.  I have prearranged with computing services 
to allow certain hosts to transfer larger amounts of data.  If you need 
to make a large (on the order of GB) data transfer , please contact me, 
and I can set you up with a way to do it without affecting the access 
for everyone.

Thanks,

Mike

-------- Original Message --------
Subject: 	NN48385 - Notification: Network Bandwidth Limit Exceeded - 
LOS1.AUTON.CS.CMU.EDU (fwd)
Date: 	Sat, 15 Sep 2007 09:48:06 -0400 (EDT)
From: 	Gary Aranyos <aranyos+ at cs.cmu.edu>
To: 	<awd+ at cs.cmu.edu>
CC: 	<mjbaysek+ at cs.cmu.edu>



---------- Forwarded message ----------
Date: Sat, 15 Sep 2007 09:08:55 -0400
From: abuse at andrew.cmu.edu
To: zack at andrew.cmu.edu, mp23 at andrew.cmu.edu, cs1y at andrew.cmu.edu,
     gward at andrew.cmu.edu, aranyos at andrew.cmu.edu, jhutz at andrew.cmu.edu,
     cpc at andrew.cmu.edu
Cc: acs+ng.project.epidemic.outgoing at andrew.cmu.edu
Subject: NN48385  - Notification: Network Bandwidth Limit Exceeded -
    LOS1.AUTON.CS.CMU.EDU


TO:


FROM:    Carnegie Mellon
         Computing Services
         Computing and Network Security

SUBJECT: Notification: Network Bandwidth Limit Exceeded

MACHINE:
   Machine: Machine: IP 128.2.204.47, MAC , Hostname LOS1.AUTON.CS.CMU.EDU


You are receiving this message because the machine listed above has used an amount of network bandwidth in excess of the current guidelines.  Current guidelines allow for a single machine to generate two (2) Gigabytes of traffic per day on the wired network, either inbound (from the internet) or outbound (to the internet).  You can read the guidelines at:

<http://www.cmu.edu/computing/documentation/policies_bandwidth/bandwidth.html>

The following shows the total daily usage of network bandwidth for this machine over the past five (5) days:

  Daily Rates:                 Inbound      Outbound
      Date        Usage         Usage
2007-09-10      0.002GB       0.004GB*
2007-09-11      0.001GB       0.003GB*
2007-09-13      0.001GB       0.002GB*
2007-09-14     11.087GB*      0.289GB


  Five Day Average:  2.219

Note that the Five Day Average counts the greater value of inbound or outbound traffic each day.

We request that you reduce your bandwidth use immediately to under two (2) Gigabytes per day.

Since this is your first notification regarding your bandwidth usage, Computing Services will send you a warning if your machine uses more than two (2) Gigabytes of either inbound or outbound bandwidth in a single day.  If you continue to exceed the guidelines after that warning, we will send one additional warning before we will be forced to suspend network access for this machine to ensure that all users have reasonable access to the network.

Computing Services enforces bandwidth quotas to ensure that a small number of machines do not degrade the network service by consuming an excessive amount of available bandwidth.

If you have a demonstrated need for using bandwidth that exceeds the guideline limit, you can request an exemption as described later in this message.

---------------------------------------
Why would I be using so much bandwidth?

In many cases systems generate excessive bandwidth without the owners knowlege or intent.  Services such as peer-to-peer file sharing programs (kazaa, gnutella, bittorrent, and others) often serve content by default which can contribute to this problem.

It is also possible that the machine is infected with a worm which is generating traffic, or that the machine has

been compromised and is being used as a server or to launch attacks.

Downloading or uploading high volumes of software, documents, or programs can also cause excessive usage.

---------------------------------------
What if I have a need to use this much bandwidth?

If your use of network bandwidth is the result of a demonstrated need that supports the educational and research goals of the university, you can fill out the form on the following web page to request an exemption:

<http://www.cmu.edu/computing/security/bandwidth_exemption.html>

Requesting an exemption does not guarantee that you will receive one.

If you do not receive an exemption, you will need to reduce your network bandwidth usage immediately to under two (2) Gigabytes per day.

Failure to reduce the bandwidth usage for systems which are not granted an exemption may result in the system being blocked from using the campus network.


---------------------------------------
What should I do if I don't recognize the machine you're talking about?

You have received this message because you are listed as an owner of the machine in NetReg (<http://netreg.net.cmu.edu>) or because you are a member of an administrative group with responsibility for the machine.

The listed owner(s) of this system are:

The listed administrator(s) of this machine:

If this machine does not belong to you, try contacting one of the administrators listed above.  If you are one of the administrators listed, please contact abuse at andrew.cmu.edu.


Thank you,

Computer and Network Security Team
Computing Services
<http://www.cmu.edu/computing/security>