mirror of
https://github.com/cunnie/sslip.io.git
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153 lines
8.2 KiB
HTML
153 lines
8.2 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width,
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initial-scale=1">
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<!-- The above 3 meta tags *must* come first in the head; any
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other head content must come *after* these tags -->
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<title>sslip.io FAQ</title>
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<meta name="description" content="sslip.io">
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<meta name="author" content="Brian Cunnie">
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<link rel="shortcut icon" type="image/x-icon" href="img/favicon.ico">
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queries -->
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</head>
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<body>
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<div class="container">
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<div class="navbar-header">
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<button type="button" class="navbar-toggle
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collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
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<span class="sr-only">Toggle navigation </span>
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<span class="icon-bar"></span>
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<span class="icon-bar"></span>
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<span class="icon-bar"></span>
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</button> <a class="navbar-brand" href="/">sslip.io</a> </div>
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<div id="navbar" class="collapse
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navbar-collapse">
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<ul class="nav navbar-nav">
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<li><a href="/">Home</a></li>
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<li class="active"><a href="faq.html">FAQ</a></li>
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<li><a href="about.html">About</a></li>
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</ul>
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</div>
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<!--/.nav-collapse -->
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</div>
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</nav>
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<div class="container">
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<div class="starter-template">
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<h1>FAQ</h1>
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<p class="lead">Do I have to pay to use this service?</p>
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<p>No, it's free.</p>
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<p class="lead">Can I use this certificate on my commerce website?</p>
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<p>Although there's no technical reason why you couldn't use the sslip.io SSL key and certificate for your commerce web, we <i>strongly</i> recommend against it: the key is publicly available; your traffic isn't secure. sslip.io's primary purpose is
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to assist developers who need to test against valid SSL certs, not to safeguard content.</p>
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<p class="lead">My webserver wants a certificate and an "intermediate certificate chain"—where do I get that?
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</p>
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<p>Certain web servers (e.g. <a href="http://www.tenable.com">Tenable's</a> <a href="http://www.tenable.com/products/nessus-vulnerability-scanner">Nessus</a> scanner) prefer to split the chained certificate file (which has three concatenated certificates)
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into two files: one file containing a single certificate for the server itself (e.g. the "*.sslip.io" certificate), and a second file containing the intermediate certificate authorities (e.g. the two COMODO certificate authorities).</p>
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<p>You can split the chained certificate file by hand, or you can download them, pre-split, from GitHub:
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</p>
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<ul>
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<li>the server <a href="https://raw.githubusercontent.com/cunnie/sslip.io/master/ssl/sslip.io.crt.pem">certificate</a> ("*.sslip.io")
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</li>
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<li>the intermedicate certificate <a href="https://raw.githubusercontent.com/cunnie/sslip.io/master/ssl/intermediate-ca.crt.pem">chain</a> (the COMODO CAs)</li>
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</ul>
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<p class="lead">Why can't I use dots in my hostname? xip.io lets me use dots.
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</p>
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<p>You can't have dots, but you can have dashes: for example, "www-sf-ca-us-10-9-9-142.sslip.io" will work with sslip.io's wildcard SSL certificate, but "www.sf.ca.us.10.9.9.142.sslip.io" will not. This is a technical limitation of wildcard certs and the manner in which browsers treat them (read more <a href="http://security.stackexchange.com/questions/10538/what-certificates-are-needed-for-multi-level-subdomains">here</a>). This restricts sslip.io's usage model. For example, it won't work properly with Cloud Foundry's app domain or system domain.
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<p class="lead">Can you make the hostnames easier to remember? I'm being force to memorize IP addresses.</p>
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<p>Unfortunately, no. We appreciate that "52-0-56-137.sslip.io" is not an easy-to-remember hostname, whereas
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something along the lines of
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"aws-server.sslip.io" would be much simpler, but we don't see any easy solution—we need to be
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able to extract the IP address from the hostname in order for our DNS nameserver to reply with the proper
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address when queried.</p>
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<p class="lead">Do you have support for IPv6-style addresses?</p>
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<p>Not yet, but if there's enough demand for it we might try implementing it.</p>
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<p class="lead">Why did you choose a 4096-bit key instead of a 2048-bit key?</p>
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<p>We couldn't help ourselves—when it comes to keys, longer is better. In retrospect there were flaws in our thinking: certain hardware devices, e.g. YubiKeys, only support keys of length 2048 bits or less. Also, there was no technical value
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in making a long key—it's publicly available on GitHub, so a zero-bit key would have been equally secure.</p>
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<p class="lead">Do I have to use the sslip.io domain? I'd rather have a valid cert for my domain.</p>
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<p>If you want valid SSL certificate, and you don't want to use the sslip.io domain, then you'll need to purchase a certificate for your domain. We purchased ours from <a href="https://www.cheapsslshop.com">Cheap SSL Shop</a>, but use a vendor with
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whom you're comfortable. </p>
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<p class="lead">What is the sslip.io certificate chain?
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</p>
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<p>The sslip.io certificate chain is the series of certificates, each signing the next, with a root certificate at the top. It looks like the following:</p>
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<div class="col-sm-12">
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<img src="img/cert_chain.png" height="206" /> </div>
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<div class="row"></div>
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<p></p>
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<p>Note that the "root" certificate is "AddTrust's External CA Root", which issued a certificate to the "COMODO RSA Certification Authority", which in turn issued a certificate to the "COMODO RSA Domain Validation Secure Server CA" which in turn issued
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our certificate, "*.sslip.io".</p>
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<p class="lead">Where do I report bugs? I think I found one.</p>
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<p>Open an issue on <a href="https://github.com/cunnie/sslip.io/issues">GitHub</a>; we're tracking our issues there.</p>
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<p class="lead">There's a typo/mistake on the sslip.io website.
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</p>
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<p>Thanks! We love <a href="https://github.com/cunnie/sslip.io/pulls">pull requests</a>.</p>
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<div class="row">
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<p></p>
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</div>
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<p>© 2015 Brian Cunnie, Pivotal Software
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</p>
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</div>
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