SSL and its successor, TLS, are encryption and authentication protocols that encrypt the full contents of a TCP connection, as well as potentially verifying the identities of the devices making the connection.

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78
votes
5answers
46k views

Multiple SSL domains on the same IP address and same port?

This is a Canonical Question about Hosting multiple SSL websites on the same IP. I was under the impression that each SSL Certificate required it's own unique IP Address/Port combination. But the ...
20
votes
9answers
13k views

Multiple domains with SSL on same IP

I know that a dedicated IP is needed for setting up SSL. What happens if we add SSL for domains sharing an IP ? (Namevirtualhost)
21
votes
2answers
6k views

SSL password on apache2 restart

I setup wildcard SSL certificate from Godaddy on Apache2. Whenever the server restarts it asks for the passphrase for the SSL certificate's private key. What's the best way to remove this obstacle ...
15
votes
4answers
1k views

SSL certificate selection based on host-header: is it possible?

Is it possible for a web server to select an SSL certificate to use based on the host-header of the incoming connection, or is that information that is only available after the SSL connection is ...
7
votes
2answers
647 views

Difference between SSL products

I'm looking into getting a few SSL certificates for domains to cover the following: autodiscover.example.com remote.example.com www.example.com Wildcard certificates are too expensive, so I'm ...
10
votes
2answers
6k views

SSL site not using the correct IP in Apache and Ubuntu

I'm trying to set up an apache-ubuntu-php webserver. My webserver will host multiple SSL sites, each SSL site will have it's own IP address (unless there's a better way to do this). So I suppose the ...
5
votes
1answer
563 views

How to stop HTTPS requests for non-ssl-enabled virtual hosts from going to the first ssl-enabled virtualhost (Apache-SNI)

I hope that title is clear. How do I prevent HTTPS requests for non-ssl-enabled virtual hosts from going to the first ssl-enabled virtualhost (setup is Apache-SNI). For example, using my abbreviated ...
95
votes
7answers
77k views

How to force or redirect to SSL in nginx?

I have a signup page on a subdomain like: https://signup.mysite.com It should only be accessible via HTTPS but I'm worried people might somehow stumble upon it via HTTP and get a 404. My ...
1
vote
1answer
144 views

Understand ssl setup

Goals: If the user support SNI and hit myurl1.server.com (https) or myurl2.server.com (https) it will match the right vhost. (the last 2 vhosts) If the user does not support SNI and hit ...
21
votes
1answer
22k views

Configure custom SSL certificate for RDP on Windows Server 2012 in Remote Administration mode?

So the release of Windows Server 2012 has removed a lot of the old Remote Desktop related configuration utilities. In particular, there is no more Remote Desktop Session Host Configuration utility ...
19
votes
3answers
21k views

stop apache from asking for SSL password each restart [duplicate]

Using instructions from this site but varying them just a little i created a CA using -newca, i copied cacert.pem to my comp and imported as trusted issuer in IE. I then did -newreq and -sign (note: i ...
19
votes
6answers
9k views

Can I be my own trusted CA via an signed intermediate certificate?

Can I get a certificate from a root CA that I can then use to sign my own web server certificates? I would, if possible, use a signed certificate as an intermediate to sign other certs. I know that I ...
10
votes
4answers
38k views

How can I see what version of SSL a web server is currently using?

I believe I have disabled SSL 2.0 on my web server (Windows Server 2003). To make sure that it is now using SSL 3.0, how can I check this? What is the correct way to disable 2.0 and enable 3.0 on a ...
14
votes
2answers
15k views

SSL routines:SSL23_WRITE:ssl handshake failure

I'm trying to use OpenSSL to connect to an SSL server. When I run: openssl s_client -connect myhost.com:443 The following SSL client configurations work just fine: Windows (OpenSSL 0.9.83e 23 ...
1
vote
2answers
264 views

Stop default SSL response on Shared IP using SNI

Previously I asked a question here: Single domain SSL presented for all domains on Shared IP about setting up secure and non-secure domains on a single IP. Opinions were mixed, but it appears SNI ...
6
votes
4answers
22k views

SSH issues: Read from socket failed: Connection reset by peer

I compiled OpenSSH_6.6p1 on one of our server. I am able login via SSH to the upgraded server. But I am not able to connect to other servers running OpenSSH_6.6p1 or OpenSSH_5.8 from this. While ...
2
votes
1answer
383 views

Weird http -> https redirection although not configured

I am running Apache 2.2.15 (CentOS 6.6) with a HTTP-only domain demo.xml-director.info Using wget I can retrieve the content properly wget -S http://demo.xml-director.info --2015-01-05 13:31:41-- ...
14
votes
7answers
53k views

Apache VirtualHost with mod-proxy and SSL

I am trying to setup a server with multiple web applications which will all be served through apache VirtualHost (apache running on the same server). My main constrain is that each web application ...
7
votes
1answer
8k views

Apache SSL VirtualHosts on a single IP using UCC/SAN certificate

I need to host several Apache virtual hosts with SSL from a single IP. Now - I understand that because SSL wraps around the HTTP request, there's no way to know which host is being requested until a ...
16
votes
1answer
2k views

How to mitigate POODLE but keep SSLv3 support for old clients

How do I mitigate the POODLE attack, but still keep support for old clients such as IE6 on Windows XP or an e-mail client. I've noticed that google does this: ...
15
votes
1answer
13k views

SSL Certificate Location on UNIX/Linux

Is there any standard or convention for where SSL certificates and associated private keys should go on the UNIX/Linux filesystem? Thanks.
10
votes
5answers
16k views

How do I disable SSLv3 support in Apache Tomcat?

I am trying to reconfigure my Apache Tomcat server to only use TLSv1. However, it is still falling back to SSLv3 using certain browsers. I setup the <connector> tag with the following settings: ...
4
votes
1answer
742 views

For enabling SSL for a single domain on a server with muliple vhosts, will this configuration work?

I just purchased an SSL certificate to secure/enable only ONE domain on a server with multiple vhosts. I plan on configuring as shown below (non SNI). In addition, I still want to access phpMyAdmin, ...
7
votes
2answers
16k views

Stunnel won't work with SSLv3 from some hosts

I'm trying to set up Stunnel to server as SSL cache. Everything was smooth, and mostly it works as designed. Then I encountered errors in log files: SSL_accept: 1408F10B: error:1408F10B:SSL ...
5
votes
1answer
5k views

Can nginx listen on port 80, but send upstream to backend using SSL on 443?

For PCI compliance, my application is forced to use a secure/encrypted connection between the reverse proxy server and backend app server, whereas the connection coming into the reverse proxy is on ...
1
vote
5answers
2k views

How to install a single SSL certificate for www and non-www

I have purchased an SSL certificate and I should be able to configure IIS 7 to use that certificate for both https://domainname and https://www.domainname I have looked online but didn't find a ...
3
votes
2answers
2k views

The site is using outdated security settings that may prevent future versions of Chrome from being able to safely access it

We're using an AWS ELB to do SSL termination and are having an issue where Chrome is displaying "https" in red with a strikethrough. It says "The site is using outdated security settings that may ...
1
vote
2answers
3k views

CentOS PHP cURL NSS error 5938

Having a strange issue with cURL and PHP on a couple of CentOS boxes. Locally, I'm running CentOS 6.3. Remote is CentOS 5.9 Locally, the box receives a request, scp's a file to the remote server, ...
178
votes
11answers
46k views

Is it bad to redirect http to https?

I just installed an SSL Certificate on my server. I use a web hosting panel called ZPanel that is an open source project. It then set up a redirect for all traffic on my domain on Port 80 to ...
18
votes
3answers
2k views

choosing the right SSL certificate

We're looking to purchase some SSL certificates to secure the login pages of ecommerce sites. It is not required to secure the actual payment process as this is protected by a third party with its own ...
35
votes
8answers
59k views

On IIS, how do I patch the SSL 3.0 POODLE vulnerability (CVE­-2014­-3566)?

How do I patch CVE­-2014­-3566 on a Windows Server 2012 system running IIS? Is there a patch in Windows Update, or do I have to do a registry change to disable SSL 3.0?
26
votes
5answers
7k views

Functional implications of differences in SSL and TLS

I know that TLS is essentially a newer version of SSL, and that it generally supports transitioning a connection from unsecured to secured (commonly through a STARTTLS command). What I don't ...
28
votes
7answers
21k views
+50

Wildcard SSL certificate for second-level subdomain

I'd like to know if any certificates support a double wildcard like *.*.example.com? I've just been on the phone with my current SSL provider (register.com) and the girl there said they don't offer ...
12
votes
6answers
7k views

Redirect to SSL only if browser supports SNI

I have Apache 2.2 with mod_ssl and a bunch of sites in HTTPS on the same IP/port with VirtualHosting, so client must support SNI to connect to those virtual hosts. I would like to configure my server ...
11
votes
2answers
12k views

How to disable SSLv2 or SSLv3?

Anyone know how to disable certain SSL versions and only enable others in IIS 7.5?
8
votes
5answers
12k views

How to create a multi-domain self-signed certificate for Apache2?

I've got a little private webserver where I have several virtualhosts. I know that it's impossible to assign a certificate to each individual virtualhost, because the server finds out which ...
4
votes
4answers
13k views

Need help trouble shooting Https webserver error - SSL Handshake failed

I followed this guide: http://hints.macworld.com/article.php?story=20041129143420344 Here is my virtual host definition <VirtualHost *:443> SSLEngine on SSLProxyEngine On ...
18
votes
2answers
4k views

Must CSRs be generated on the server that will host the SSL certificate?

Is it necessary to generate the CSR (Certificate Signing Request) on the same machine that will host my web application and SSL certificate? This page on SSL Shopper says so, but I'm not sure if ...
5
votes
2answers
3k views

Virtual Domains with Postfix and SSL

I've got a Postfix mail server setup for hosting multiple virtual domains (say xxx.com and yyy.com). Users configure their outgoing mail server as mail.xxx.com and mail.yyy.com. All mail servers ...
4
votes
1answer
2k views

MongoDB SSL encryption and Spring's Driver

There is very limited information regarding MongoDB and SSL encryption for the transport between replica sets and drivers (java clients). Anyone have any experience setting this up? Looking to have ...
4
votes
2answers
3k views

Apache - extremely slow initial handshake (SSL enabled)

I have a problem with Apache server. The initial SSL handshake takes about 5-7 seconds which is horrible. After that the response time is in miliseconds - but the messages must be sent right after the ...
11
votes
4answers
4k views

SSL Handshake negotiation on Nginx terribly slow

I am using Nginx as a proxy to 4 apache instances. My problem is that SSL negotiation takes a lot of time (600 ms). See this as an example: http://www.webpagetest.org/result/101020_8JXS/1/details/ ...
10
votes
2answers
2k views

Cost of getting in-house certificate authority trusted

My company has an in-house certificate authority that is currently self-signed. Since we want to start using it for external SSL and secure email to our customers, we need to get it trusted. Does ...
7
votes
3answers
26k views

Why wget doesn't verify SSL certificates?

I have a problem with my Fedora 8 installation. It looks that wget doesn't know how to verify SSL certificates any more. It's strange because I have another Fedora 8 box which I believe has the same ...
4
votes
1answer
2k views

force https with apache before .htpasswd

I have this in my .htaccess file RewriteEngine On RewriteCond %{HTTPS} off RewriteRule ^(.*)$ https://www.myweb.com/phpmyadmin$1 [R,L] AuthUserFile /var/www/myweb/.htpasswd AuthGroupFile /dev/null ...
2
votes
1answer
454 views

openvpn - only one client key/certificate pair working

Scenario: I have a Debian 6 openVPN virtual server and several clients (windows, os x). They all connect fine, however only one client with a certain key/certificate pair can ping the server, all the ...
1
vote
1answer
9k views

HAProxy not passing SSL traffic in TCP mode (unknown protocol)

I've got a HAProxy LB solution setup and working correctly. All HTTP traffic on port 80 is being passed through succesfully. I'm now trying to get SSL traffic to work (in TCP mode and on just one ...
12
votes
3answers
45k views

How do I clear Chrome's SSL cache?

I have a HAProxy / stunnel server that handles SSL for our sites on AWS. During testing, I created a self-signed cert on this server and hit it from my desktop using Chrome to test that stunnel was ...
10
votes
4answers
6k views

What host name should the SSL certificate for an SMTP server contain?

I have a server foo.example.com at 192.0.2.1 It runs exim to receive e-mail for several of my domains. My domains each have an MX record pointing to mx.example.com, which resolves to 192.0.2.1 If I ...
6
votes
3answers
5k views

Self generate SSL Certificate for IIS6?

Hi guys is it possible to create your own SSL cert for IIS 6? If so does anyone have a link to a good guide on the web? Thank! John