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

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How can an OpenVPN server be setup to use multiple certificates?

The OpenVPN documentation sets up a single certificate from a single CA to be used for all clients. Is there a way to set the server to enable multiple certificates from different CAs so long as the ...
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Deploy internal CA to linux clients

I have a large number of workstations that run RedHat Enterprise Linux 5 and 6. I'd like to deploy our new internal CA (Active Directory) to these machines. I can manually import the certificate ...
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How do I manually authenticate a CA signed SSL certificate

A service I am using is refreshing their SSL certificate and now my connections to their service fail. They were working before the change (as in, 1 hour before the change). Their old and new server ...
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4k views

How do I configure Remote Desktop Session Host Server to use 3rd party CA and certificates?

I'm trying to harden our RDP service so we can use a specific server without having to VPN into our network. I would like the RDP Session Host Server to use certificates from an authorized certificate ...
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492 views

Using Microsoft CA to create TLS key/cert for Postfix

I'm trying to configure a postfix mailserver to use TLS encryption for SMTP (and IMAP with dovecot, but I haven't gotten to that point yet). It's running on a Fedora 14 machine and I'm using webmin to ...
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64 views

Windows Server 2003: Taking Root and Intermediate CA's offline causers faiure in Enterprise CA

I installed 3 CA's in lab environment: SA Root CA SA Intermediate CA Enterprise CA (also DC) The instructor recommends taking Root and Intermediate CA's offline once the Enterprise CA has been ...
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How do you change the cert template that IIS 7.5 uses automatically when you choose to “Create Domain Certificate”

In IIS, there is an option to "Create Domain Certificate." This works great except for one problem. The template that this process uses is the "Web Server" template in the CA which has a key with ...
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215 views

“Countersigning” a CA with openssl

I'm pretty used to creating the PKI used for x509 authentication for whatever reason, SSL Client Verification being the main reason for doing it. I've just started to dabble with OpenVPN (Which I ...
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329 views

Requiring client certificate issued by a specific intermediate CA in Apache

I have a CA hierarchy like this: Root-CA ________|_____________ | | TEST-CA PRODUCTION-CA _____|_____ ...
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270 views

Issuing client certificates to customers

What's the best approach for issuing client certificates to customers? Should we run our own certificate services (we're on Win 2008 R2), and issue them that way? Is there a CA that will issue them ...
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Server 2008DC Replication issues with 2003DC

Still have an ongoing replication issue on my network. Long story short: Existing 2003 Domain (2003 Level). Added a new 2008R2 server. Did the usual Adprep/forestprep steps as required. Transferred ...
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Automatically create Subject Alternate Name (SAN) Certificates

We are running an enterprise CA on Windows 2008R2. I just did an update to windows 7 on my workstation. Now every time I connect to a remote server using rdp I get a warning stating that the ...
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159 views

SSL Handshake, Cannot Pinpoint Problem

When attemting to communicate with an Alfresco Server to perform a file upload the client receives the following error in their logs. SSLPeerUnverifiedException: Indicates that the peer's ...
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1answer
983 views

openssl req sets wrong “not after” date (overflow bug?)

I tried to gernerate my own root CA with a validity of 40 years as follow: openssl req -new -newkey rsa:4096 -x509 -days 10950 -extensions v3_ca -keyout myca.key -out myca.crt -config ...
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1answer
303 views

Windows Server 2008 R2 Certification Authority into 2003 Domain

Is it supported to install a Certification Authority service on a Windows Server 2008 R2 joined on a 2003 native functional level domain?
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Cannot issue Computer cert to standalone computer from my ECA

All Windows 2K8R2 SP1 environment. I have a working Enterprise Certificate Authority in my domain. I want to issue a Computer certificate (for Server Authentication purpose) to an external, ...
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634 views

Is it okay to use the FREE SSL Certificate offered by: Instant SSL by comodo? or Is StartCom better? [closed]

Is it okay to use the FREE SSL Certificate offered by: Instant SSL by comodo. The site says: Our promise to you: There is absolutely no cost or commitment for your SSL certificate. ...
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467 views

powershell and remote signing

I've created a power shell script to run on start-up but its not working. I've never run a script through group policy so i don't know what the restrictions/best practices are. I've been told i need ...
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218 views

How do I set up my own CA for certs and begin importing it in my Computers and/or browsers

I'd like to set up my own Certificate Authority to sign things that are only used internally. Does anyone have any steps they've used to set up their own CA and begin signing certs. I'd also like to ...
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3k views

Sign an OpenSSL .CSR with Microsoft Certificate Authority

I'm in the process of building a Debian FreeRadius server that does 802.1x authentication for domain members. I would like to sign my radius server's SSL certificate (used for EAP-TLS) and leverage ...
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751 views

Simple CA web interface for SSL certificates tracking/request/generation

I am using the nice XCA packge on my WS to generate and track the keys and CSRs we submit to various CAs, track the certificates we get back from then and to manage the full lifecycle of other ...
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653 views

How long can a Microsoft Server CA be down before a cert will fail?

We are using self-signed certificates for internal development machines and other internal connection encryption. The certificates were created using Microsoft Certificate Server. I need to move ...
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397 views

Why do I get certificate error when connecting to “trusted PEAP server?”

I'm trying to connect Windows 7 machine to my wireless network secured with WPA2-Enterprise PEAP. PEAP uses server authentication so I have created root CA named FesbCA on my Windows server 2008 R2 ...
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1answer
646 views

Windows 7 Pro Remote Desktop, improper client-side Certificate warning

I have a standard Windows 7 Pro x64 workstation which has Remote Desktop enabled, the workstation is part of a domain (Samba3, so NT4 style). I have followed these instructions to my success, the ...
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235 views

Free OCSP server

I can't have OCSP with my current OS licensing (2008 R2 Standard) but I need this option. I'm hoping to avoid shelling out an additional $2300. Are there any open source products that could act as ...
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684 views

How can i import CA certificates to my Linux server(Archlinux)? [closed]

i can only connect my server by ssh,none web browser and other GUI tools.
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RDP Certificate Distribution Points

I am receiving the message "Your computer can't connect to the remote computer because the Remote Desktop Gateway's server's certificate has expired or has been revoked" when trying to access a TS ...
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apache Client Certificate Authentication errors: Certificate Verification: Error (18): self signed certificate

So I have been following instructions on setting up Client Certificate Authentication in Apache2 w/ mod_ssl. This is solely for the purpose of testing an application against CAA, not for any sort of ...
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1answer
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Why might Windows falsely claim a self-signed root CA certificate is revoked?

I created a self-signed root CA cert for internal test use, using openssl. This has been successfully installed and used as a trusted CA on a number of machines and platforms (Windows, Linux, various ...
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746 views

How do I create a certificate with HP Systems Management Homepage with Windows 2008 R2

I'd like to get a trusted, or even better a "green bar" certificate from my Windows 2008 R2 CA to work with my Insight manger home page of https://host:2381 I tried importing the file ...
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1answer
374 views

Migrating from a standalone to enterprise CA

I want a peaceful transition from an old standalone CA into an enterprise CA. I am intending to offline the server on completion of this process. My thought process is to publish a CRL with a long ...
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180 views

Offline root CA - LDAP distribution point

What benefit is there in using the LDAP distribution point for an offline CA versus using only HTTP? It sounds like the process would be much simpler to use the HTTP distribution point only. I've ...
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758 views

Are code signing certificates automatically trusted across the domain if the root CA is trusted?

We have a Microsoft enterprise certificate authority, and I would like to start issuing a few code signing certificates. But what I'm unsure of is this: since all our domain/forest machines trust the ...
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How can I make a private SSL certificate be trusted by end-users on two seperate ActiveDirectory domains

I have a web application that utilizes SSL. The website is not publicly facing, and is for private internal access only at our enterprise. For security reasons, we run two separate Active ...
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Can I remove the DC role from a W2k8 server being an Enterprise CA?

Is it possible to run a W2k8 Enterprise (AD-integrated) Certificate Authority on a server that it not a domain controller - mine currently is a DC and I do not remember whether this was a requirement? ...
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ArcServer creates additional jobs

We're running CA ARCserve Backup r12.5 (Build 5854) - Small Business Server Edition on our Small Business Server 2008. There is a daily job which saves the systemdrive, exchange and 3 databases to our ...
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744 views

Implications of Root CA without CRL

I'm currently setting up a PKI for my company and while I have come up with a good layout and planned the overall policy of certificate issuance, I'm still puzzled by what role the CRL plays. By ...
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1answer
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Issuing Computer Certificates to Non-Domain Members (Enterprise CA)

I am trying to implement remote client access using L2TP/IPSec VPN for both domain members and non-members. Domain members is fine and working OK but I am having trouble issuing a certificate to the ...
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1answer
375 views

There is no certificate chain in portal certificate file

I am trying to install Mcafee EMM in a lab environment. I have created an enterprise CA and created a certificate. But while installing the EMM, its showing the error of there is no certificate ...
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434 views

I can't install Enterprise root CA in windows 2003

I am trying to install Enterprise CA in my windows server 2003.But I can select only stand alone root CA and the stand alone subordinate CA. Other two options are not highlighted. Can anybody give me ...
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383 views

CA cert error when setting up git submodules on PPC Mac 10.5.8

I have a git repository with submodules on github, when I try and set up the submodules locally by doing: git submodule init git submodule update I get this error: error: SSL certificate problem, ...
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Run `certutil -DCInfo` on a different target domain

It seems that running certutil.exe -DCInfo Verify will check the certificates for all domain controllers in the domain of the logged-in user account. In our AD forest, we have a handful of domains. I ...
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Certificate Template Missing from “Certificate Template to Issue”

I'm having a problem similar to that posted in this question: Missing Certificate template From certificate to issue The short version is that I've created a duplicate certificate template and I'm ...
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1answer
252 views

Disaster Recovery with one 2008R2 DC and a 2003R2 DC

I am working out DR scenarios and one was making me scratch my head: Currently our domain has a 2008R2 DC and a 2003R2 DC. I know bringing restoring DCs can sometimes be harmful to an AD if others ...
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Certreq -retrieve can't find the specified CA

I'm currently writing a Powershell script and have run into a bit of a roadblock. Basically, the script requests, approves, and retrieves new certificates from our CA using certreq.exe and ...
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87 views

Drawbacks in use an internal CA for a production Exchange 2007/2010 SAN certificate

Is there any critical drawback in using an internal CA to release an Exchange 2007/2010 SAN certificate for a production environment?
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136 views

Understating certificate authority nesting

Given we have the following network/CA structure: Win2K8R2 - Root CA - no idea where its' certificate is? Win2K8R2 - Sub CA - obtained CA certificate from Root CA Win2K8R2 - OWA 2010 (Basically, a ...
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651 views

Renewing a OCSP and OWA certificates for Exchange 2010

We have been using an Exchange 2010 mail server for a year now. Today the certificates used in Exchange, as well as of Forefront TMG expired. We had the following certificate chain: Root CA issued a ...
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How to secure your CA's private key?

I'm about to implement my own Certification Authority (CA) for interal use only. Now there is a problem, that the CA private should never ever be exploited. So right now the private key is encrypted. ...
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319 views

Linux Certification Authority signing Windows 2003 Server certificate requests

I've had some success using a Windows 2003 Server running as a Certification Authority signing certificates used in secure communications between Ubuntu Linux and Active Directory on Windows 2003 ...