<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Times New Roman \(Body CS\)";
panose-1:2 11 6 4 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:12.0pt">As Alex said, you can submit a request to review a block at
</span><span style="font-size:12.0pt"><a href="https://urldefense.com/v3/__https:/spa.xfinity.com__;!!CQl3mcHX2A!VFRCR2r6w4y6BDhy4gmaIa2JdxJVoUxgzRD48A1CG_X6a9Nq8gN2Qjie7Yzk8C5y_XSXg-Dd$" title="https://urldefense.com/v3/__https://spa.xfinity.com__;!!CQl3mcHX2A!VFRCR2r6w4y6BDhy4gmaIa2JdxJVoUxgzRD48A1CG_X6a9Nq8gN2Qjie7Yzk8C5y_XSXg-Dd$">https://spa.xfinity.com</a>.
Note that this service relies substantially on 3<sup>rd</sup> party list sources – so if any IP/FQDN appears on other lists (e.g. webroot and similar) then it may be here as well. So you may want to take a look more broadly, especially if you rely on any virtual
infrastructure. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Jason<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">NANOG <nanog-bounces+jason_livingood=cable.comcast.com@nanog.org> on behalf of Jason Kuehl <jason.w.kuehl@gmail.com><br>
<b>Date: </b>Friday, September 10, 2021 at 11:10<br>
<b>To: </b>Jim Popovitch <jimpop@domainmail.org><br>
<b>Cc: </b>NANOG <nanog@nanog.org><br>
<b>Subject: </b>Re: Xfi Advances Security (comcast)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt">This is an SSL VPN that is being blocked. This is what failure looks like. Curl is the same.<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt">Once we disable the Xfi Advanced Security everyone can connect.<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt"><img border="0" width="562" height="251" style="width:5.8541in;height:2.6145in" id="_x0000_i1025" src="cid:ii_ktehov470"><o:p></o:p></span></p>
</div>
</div>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt">On Fri, Sep 10, 2021 at 11:01 AM Jim Popovitch via NANOG <<a href="mailto:nanog@nanog.org">nanog@nanog.org</a>> wrote:<o:p></o:p></span></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:12.0pt">On Fri, 2021-09-10 at 10:31 -0400, Jason Kuehl wrote:<br>
> For whatever reason Comcast Xfinity is blocking my VPN URL. <br>
<br>
Not certain that this applies, but Concast Advanced Security (setup in<br>
your Comcast gateway) only allows outbound VPN connections to UDP ports<br>
500, 4500, and 62515 and TCP port 1723.<br>
<br>
-Jim P.<o:p></o:p></span></p>
</blockquote>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt"><br clear="all">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt">-- <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt">Sincerely,<br>
<br>
Jason W Kuehl<br>
Cell 920-419-8983<br>
<a href="mailto:jason.w.kuehl@gmail.com" target="_blank">jason.w.kuehl@gmail.com</a><o:p></o:p></span></p>
</div>
</div>
</body>
</html>