In cryptography, a certificate authority, or certification authority, (CA) is an entity that issues digital certificates.

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OpenVPN: Single certificate authority, multiple VPNs

The company in which I work has a single site (I'll refer it as "Site A"). There are several private networks within site A. We have a running instance of OpenVPN which allows some employees to ...
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Using our own certificate authority for business email encryption

I've read the available similar questions on serverfault but I haven't quite found a definite answer to the security aspect of it - hence here's my question: I'm administrator of an office working ...
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171 views

Windows Xp Autoenrollment Issue

i've trouble to auto enroll for Xp Clients. I setup up an two tier ca on windows 2012 and configured Autoenrollment. So far i just have been testing with Windows 7 Client and i have no issue at all. I ...
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62 views

OpenSSL not using CA directory

OpenSSL will not verify a cert $openssl s_client -connect <host>:443 ... Verify return code: 21 (unable to verify the first certificate) However, if we figure out the location of the store $ ...
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17 views

What refer/mean “Remote Server Authentication” at Apache mod_ssl doc?

The part of the doc in that such term is used is this. Can anybody give some context or explain me what mean Remote Server Authentication there? I know that Apache server can authenticate clients but ...
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1answer
1k views

Where to get root CA certificates for Windows Server now that Microsoft no longer updates them?

Microsoft removed root CA updates from WSUS in January 2013. I now have some fresh installs of Windows Server 2012 that have an insufficient set of root CAs (basically just Microsoft's own CAs). This ...
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1answer
95 views

Openvpn signing certificates with wrong CA

I have a working (until now) ubuntu openvpn server. I think that my server is using a wrong CA to sign client CRTs. E.g: I use "source ./vars" followed by "./build-key john.doe" and it all works ...
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1answer
1k views

Renewing Service Certificates for NDES on Windows Server 2008 R2

We currently use the NDES Service on Windows 2008 R2 Enterprise where the same box is also the standalone Certificate Authority. During initial setup, NDES created 2 service certificates for SCEP ...
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680 views

IIS no longer trusts any CAs for client authentication

Yesterday the IIS on our build server (running Windows Server 2012) started refusing our clients' certificates. The certificates are signed using our own self-signed CA cert that has been added to ...
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2k views

Windows 2012 SSTP The revocation function was unable to check revocation because the revocation server was offline

In order to get rid of "Error 0×80092013: The revocation function was unable to check revocation because the revocation server was offline" you have to install base/delta CRLs on the client you want ...
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2answers
795 views

Thunderbird not trusting certificate signed with self-signed authority

I have generated a self-signed certificate authority using mydomain.org as the common name. I imported the public certificate using Thunderbird's certificate manager under the "Authorities" tab. So ...
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412 views

How to get certificate common name from PEM file

Various articles online have lead me to believe that a server certificate's common name must be an exact match to the root URL it is valid for. However, when I look at a bunch of the files in ...
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195 views

LDAPS certificate not working with IP address

I have a certificate assigned to my Domain Controller/Certificate Authority that has no subject name assigned but has two FQDN's and and IP in the alternative names under DNS and IPv4 respectively. ...
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272 views

Preventing Windows from deleteing our root CA

I am trying to create a Windows server with an IIS server that has a web site with client certificate authentication. The client certificates are signed by our own root CA. Because of that we must ...
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1answer
99 views

Windows PKI: How can I import, sign/issue and export a large number of CSRs?

I have a lot of CSRs that I need to have signed/issued and exported in windows. I was hoping I could batch process them somehow (certutil sounds like it can do some of the work) but I'm not quite sure ...
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1answer
615 views

Microsoft offline root CA CDP and AIA http URLs are hard coded - trouble ahead?

I'm new with ADCS, and there is a lot to understand. I set up a 2-tier PKI, and have placed the offline root CA certificate (CRT) and CRL files on a web server pointing to with a CNAME in DNS. When I ...
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116 views

How does this 2048bit SSL requirement affect existing internal PKIs?

We have our own CA which we've used for years to create hundreds of server certs and thousands of client certs. The CA cert itself is 1024bit and the certs it signed are 1024bit Symantec has been ...
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652 views

The revocation function was unable to check revocation for the certificate

I need to pass IIS certificate authentication on Windows Server 2012. The root cert haven't got any revocation lists but I'm getting exception: The revocation function was unable to check ...
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2answers
316 views

Remove old Certificate Templates

We decommissioned our old Exchange 2003 server over a month ago. The server was also our CA(which wasn't widely used). I've removed all traces of this old CA in Sites and Services except for the ...
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4answers
323 views

Managing a block of text with Puppet

I'm attempting to insert a block of text into my CA certificate file on CentOS hosts with Puppet. I asked about this before, and it seems CentOS is sorely lacking in certificate management ...
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2answers
200 views

Enabling Certificate Authority Auto-enrollment on Domain via GPO, any “dangers” I should be aware of?

I deployed a Standalone Offline Root CA and created a Sub Enterprise CA that handles enrollment and policy. There all setup correctly. I am getting ready to enable Auto-enrollment to the whole domain ...
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1answer
2k views

AD CS: Certificate Template not available

In short, a Certificate Template I want to use is not available for enrollment. The template in question is a copy of the "RAS and IAS Server" template. What's frustrating is that I've gotten this ...
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163 views

OSX doesn't recognize certificate's signing authority

I have my own root certificate that I have imported into my OSX 'login' keychain and told it to trust across the board. I am now creating a certificate for S/MIME. I create the CSR in Keychain Access ...
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562 views

Sendmail Server Authentication: Certificate based: Error

I have configured my setup for a server certificate based authentication. Both Server and Client are sendmail systems and both have the same set of certificates. However when client communicated ...
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1answer
192 views

sendmail (Smart Host) authentication with server using certificates

We are trying to prepare a setup with following configuration: We have a Central mail server which acts as a gateway to the internet for our domain. We have some client machines which access ...
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2answers
334 views

Windows PKI with offline root (maybe with OpenSSL) - Possible?

I'm trying to setup a two-tier PKI and I have a ton of questions. Since there's the tombstone limit for the AD, I'm assuming that the root (which will be offline) shouldn't be part of the AD. Am I ...
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1answer
189 views

Code signing certificate not available to sign macros

We are trying to give one of our user the ability to sign his macros in Excel with a certificate issued by Certficate Authority. The Certificate Authority role is installed on the Domain Controller ...
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617 views

Can't locate SBS 2011 Certification Authority Web interface

Certification Authority Installed Certification Authority Web Enrollment Installed Certification Enrollment Web Services Not Installed Certification Enrollment policy web service Not Installed ...
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286 views

Error when install SSL certificate on MediaTemple GS server

Here is what happened: I generate the CSR via the MediaTemple site (that is the only way to do it. since a GS is a share server). Send it over the namecheap.com (its signed by RapidSSL). When I got ...
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1answer
783 views

Generating SAN SSL Certificate that works for firefox and chrome

I am trying to generate a SSL certificate that after being signed by my own CA will work for multiple domains. My openssl configuration file looks like this: [ req ] default_bits = 2048 ...
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1answer
251 views

Is there a cmd/certutils to copy a certificate from one store to another?

I would like to know if there is a cmd to copy an existing certificate from one store to another. I am trying to copy a certificate from the Users Intermediate Certification Authorities store ...
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31 views

nginx ssl with CA

I have a Premium SSL Cert with a provider and they sent me chain.cer, site.pem and site.cer. Do I need to do something special to avoid getting "The site's security certificate is not trusted!" when ...
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6k views

Error code: ssl_error_rx_record_too_long

I have nginx with the following setup: server { listen 80; server_name site.com www.site.com; root /home/site/public_html; listen 443; ...
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Using an SSL certificate in multiple locations

I have some issues with respect to using SSL Certificates. I have a website hosted in UK and I also have an organisation in South Africa hosting my company application online for web access. The ...
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How to properly replace CA certificate when clients get it bundled in PKCS#12 containers?

I'm about to regenerate a certificate of my CA (maintained by OpenSSL) used mostly to provide OpenVPN access to the intranet for my clients. My question is related to this one — "Certification ...
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26 views

Local CA for remote web server

I have two domains and the one I am in has a certificate authority server. The domain I am not in doesn't have a CA server. I want to certify https on that server so that I can get there without the ...
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259 views

Can't get self-signed CA cert to request corresponding client cert; Apache

I'm running Apache 2.2 on Windows, and have mod_ssl working fine for delivering a commercially signed server cert. (A wildcard cert, though I don't think it matters.) I'm trying to get the server, ...
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156 views

Update CA Bundle on Redhat 6

I have a few Redhat 6 servers that are unable to verify the certificate of an HTTPS site. I have checked, and they don't appear to have a very current CA bundle. The file ...
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257 views

ipa root certificate signing

I am trying to get my ipa certificate signed by openca and its getting rejected due to hostname. The following hostnames were rejected because the system couldn't link them to your account, if they ...
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451 views

java keystore can't validate URL

With the same url, this ends up giving a verify return code 20 (unable to get local issuer of certificate): openssl s_client -connect $URL:443 -showcerts -CAfile /etc/ssl/certs/java/cacerts This ...
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Nginx and client certificates from hierarchical OpenSSL-based certification authorities

I'm trying to set up root certification authority, subordinate certification authority and to generate the client certificates signed by any of this CA that nginx 0.7.67 on Debian Squeeze will accept. ...
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Install Trusted root certificate authority certificate via GPO

We have a Win2k8 as a Domain Controller in a domain with workstations that run Windows XP. I would like to be able to install via GPO a new trusted root certificate authority certificate that I've ...
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Can't make httpd use correct SSL

I have a signed CA, issued by my university. I generated my CSR using their public key file as so: openssl genrsa -out myservername.key 2048 (new key) openssl req -new -key myservername.key -out ...
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1answer
2k views

CA and Primary Domain Controller on the same server

I am setting up a Microsoft AD to be my CA. After research, it looks like I need to have a domain controller before I can issue certs thru the CA. Would it be possible to place both the CA and the DC ...
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1answer
252 views

When installing a Windows sub CA from an offline root, how do I “recreate” it w/o reinstalling?

I have an offline root and am trying to constrain it using the EKUs so it doesn't have all application policies. Most of this is trial and error and I"d like to make this more efficient rather than ...
2
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1answer
485 views

Multiple CA's on Windows Server 2012

Is it possible to create multiple Certficate Authorities in Windows Server 2012? Specifically: I'd like to create a standalone root CA which will have its private key in offline secure storage. The ...
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1answer
831 views

How do I manually publish a CRL for a certificate?

I have setup a new server and installed Remote Access and Certificate Authority services so I can configure it as a VPN. I have created my own certificate through http://localhost/certsvr, and have ...
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929 views

generating client.ovpn file on android

I am developing a open source application wrapper over OpenVPN library for Android. For that I need to generate openvpn conf file. I have followed OpenVPN how but did not understand how to generate ...
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cURL looking for CA in the wrong place

On Redhat Linux, in a PHP script I am setting cURL options as such: curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, True); curl_setopt($ch, CURLOPT_CAINFO, '/home/andrew/share/cacert.pem'); Yet I am ...
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Utilizing an alternate CA (Like Microsoft Certificate Services) with Puppet

I'm investigating whether I can somehow make the puppet ecosystem utilize our existing Microsoft Enterprise CA rather than being its own CA. Since puppet touts that all of the system is "standard ...