<div dir="ltr">Doing a packet trace with Wireshark running on the laptop directly connected to the OPLIN router might give you a little more information on exactly where the problem is. For instance, perhaps DNS isn't resolving the address correctly.<div><br></div><div>Could try going directly to the IP address and see if that works. <div><br></div><div>FWIW, I just browsed to <a href="http://www.usps.com">http://www.usps.com</a> and the site switched itself to https: If there was caching involved upstream, that could be a concern to me. http caching is ok, but HTTPS network traffic should be encrypted and readable only between the computer and the web server. It isn't normally cacheable. The only way to cache https is to effectively create a man-in-the-middle attack. I doubt OPLIN would be doing https caching. So the problem probably isn't http caching.</div><div><br></div></div><div>Bill just brought up the point (offlist) that if the IP is blacklisted, the telnet connection test might still work ok but die later. He very well could be right. At this point, his is the only suggestion that I can think of that could still be plausible.</div><div><br></div><div>I guess the packet trace would tell us more.</div></div><div class="gmail_extra"><br clear="all"><div>______________________________<br><b>Chad Neeper</b><br><font size="1">Senior Systems Engineer</font><br><br><b>Level 9 Networks</b><br><font size="1">740-548-8070 (voice)<br>866-214-6607 (fax)</font><br><br><font size="1"><i>Full LAN/WAN consulting services -- Specialized in libraries and schools</i></font><br></div>
<br><div class="gmail_quote">On Tue, Sep 9, 2014 at 11:21 AM, Chad Neeper <span dir="ltr"><<a href="mailto:cneeper@level9networks.com" target="_blank">cneeper@level9networks.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">A problem I see with that theory is that she said she already used telnet to test the connection and it responded correctly. But still may be possible.<br><div class="gmail_extra"><span class=""><br clear="all"><div>______________________________<br><b>Chad Neeper</b><br><font size="1">Senior Systems Engineer</font><br><br><b>Level 9 Networks</b><br><font size="1"><a href="tel:740-548-8070" value="+17405488070" target="_blank">740-548-8070</a> (voice)<br><a href="tel:866-214-6607" value="+18662146607" target="_blank">866-214-6607</a> (fax)</font><br><br><font size="1"><i>Full LAN/WAN consulting services -- Specialized in libraries and schools</i></font><br></div>
<br></span><div><div class="h5"><div class="gmail_quote">On Tue, Sep 9, 2014 at 11:16 AM, Bill Hardison <span dir="ltr"><<a href="mailto:bhardison@norweld.org" target="_blank">bhardison@norweld.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">It looks like what I have seen when an IP address is blacklisted or in some other way blocked by the "other guy" or their firewall. Contact the USPS and see if they have any such procedure in place. <p><br><b>Bill</b><i><br><br>You rush a miracle man, you get rotten miracles.</i><br>Miracle Max: The Princess Bride (1987)</p><div></div><div></div><div></div><div></div><div style="padding:0px;margin-left:0px;margin-top:0px;overflow:hidden;word-wrap:break-word;font-size:10px;line-height:13px">
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<br></div><div class="gmail_extra"><br><div class="gmail_quote"><span>On Tue, Sep 9, 2014 at 10:33 AM, Mindy Holmes <span dir="ltr"><<a href="mailto:holmesme@oplin.org" target="_blank">holmesme@oplin.org</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>
<div bgcolor="#FFFFFF" text="#000000">
I am experiencing a unique problem. There is a particular website
that won't load within our library (I will list the URL below). It
is a link to the USPS to print a return label for Alibris. The link
does not work on any PC in our network. Here is what I have tried:<br>
<br>
<ul>
<li>Mulitiple Browsers</li>
<li>Multiple Browser with not add-ons</li>
<li>Temporarily disabling antivirus software</li>
<li>Watching the traffic pass through the firewall - no blocks</li>
<li>Plugging a laptop that the linked worked on from home directly
into our OPLIN router</li>
<li>Pinging the IP address for the site</li>
<li>Telnet to the site on port 80 and running - GET / HTTP/1.1
host:<a href="http://returns.usps.com" target="_blank">returns.usps.com</a> (which does respond as it should)</li>
</ul>
<br>
The link still will not load. It just endlessly cycles and
eventually times out. I am sure there is a needle in the haystack
I have missed. Any thoughts on what this could be are greatly
appreciated. Here is the ornery URL:<br>
<br>
<span><span style="color:#1f497d"><a href="https://returns.usps.com/CreateLabel.aspx?MRSID=313600&DisplayType=Customer&ShippingInfoIncluded=No" target="_blank">https://returns.usps.com/CreateLabel.aspx?MRSID=313600&DisplayType=Customer&ShippingInfoIncluded=No</a></span></span><span><font color="#888888"><br>
<br>
Mindy Holmes<br>
Mason Public Library<br>
<br>
<br>
</font></span></div>
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