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Would this be a possible reason why the node behind the NAT is seeing tens of TCP connections to one of its neighbors while the other side sees only two TCP connections for their face (over TCP tunnel)? The underlying connectivity is not stable.<br class="">
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Lan</div>
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<div class="">On Apr 9, 2017, at 5:33 PM, Alex Afanasyev <<a href="mailto:aa@cs.ucla.edu" class="">aa@cs.ucla.edu</a>> wrote:</div>
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<div dir="ltr" class="">How would you manage such a node? If it is behind the NAT (without any ports redirected, then it will only be able establish connectivity to the testbed and there could be issues getting status (from web interface).
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<div class="">Alex</div>
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<div class="gmail_quote">On Sun, Apr 9, 2017 at 3:12 PM, Dehart, John <span dir="ltr" class="">
<<a href="mailto:jdd@wustl.edu" target="_blank" class="">jdd@wustl.edu</a>></span> wrote:<br class="">
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<div class="">All:</div>
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<div class="">In our policy statement (<a href="https://named-data.net/ndn-testbed/policies-connecting-nodes-ndn-testbed/" target="_blank" class="">https://named-data.net/ndn-<wbr class="">testbed/policies-connecting-<wbr class="">nodes-ndn-testbed/</a>)</div>
<div class="">for a site joining the NDN Testbed, we state:</div>
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<div class="">"<span style="color:rgb(34,34,34);font-family:'Helvetica Neue',Helvetica,Helvetica,Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)" class="">The machine may be a dedicated physical box or a virtual machine (VM) with a </span></div>
<div class=""><span style="color:rgb(34,34,34);font-family:'Helvetica Neue',Helvetica,Helvetica,Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)" class=""> publicly routable IP address (i.e., should not be behind a NAT). </span><font color="#222222" face="Helvetica Neue, Helvetica, Helvetica, Arial, sans-serif" class=""><span style="font-size:14px" class="">“</span></font></div>
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<div class="">I would like to lift the restriction about being behind a NAT. I believe that we originally put</div>
<div class="">that stipulation in the policy as a convenience to us as we managed the NDN Testbed.</div>
<div class="">We have already been flexible with a couple of sites that wanted or needed to be behind a NAT. </div>
<div class="">So far, I do not have any evidence that this has caused any problems. We do have an issue with</div>
<div class="">one site that happens to be behind a NAT but at this time I do not think the NAT is causing the problem.</div>
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<div class="">Does anyone have any concrete reasons why an NDN node on the NDN Testbed should</div>
<div class="">NOT be allowed to be behind a NAT?</div>
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<div class="">Thanks,</div>
<div class="">John</div>
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