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<p class=MsoNormal>All, <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Due to an inordinate amount of Chinese based traffic from only
a handful of IP addresses (over 145 TB transferred to just <b>12</b> IP
addresses in only 15 days since we started hosting the mirror) we are forced to
cease our participation in the CentOS mirror project. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>In our research before deciding to offer our support we were
told to expect a sustained 3-5 Mbit/s of mirror traffic. In reality, and
from only a handful of IPs, we regularly push over 200Mbit/s on our 300Mbit/s
line. Each of the abusive IPs downloads the same DVD iso files over and
over thousands of times. We have tried blocking the abusive IPs only to
see another IP with a sequentially increased last octet take its place.
Whether this is an outright attack or just an unfortunate coincidence matters
not. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Regretfully, I must ask that we be delisted from the mirror
list asap. Once our links are down, we will shut down the server. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>At some point in the future we may decide to participate
again but for now, we cannot justify the inordinate bandwidth use. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Scott
Adametz</span></b><span style='font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Systems
Engineer</span></i><span style='font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Big
Ten Network</span><span style='font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>600
W Chicago Ave.</span><span style='font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Chicago,
IL 60654</span><span style='font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'><a
href="mailto:scott.adametz@bigtennetwork.com"><span style='color:blue'>scott.adametz@bigtennetwork.com</span></a></span><span
style='font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>O:312.665.0787
C:708.214.4232<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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