Questions about signed certificates and the processes involved (Creation, signing, accepting, viewing)

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Linux Professional Institute preparation guide [closed]

Can someone tell me is there some updated preparation guide for LPI certification, I have found LPI Linux Certification 3rd edition book on the web, but its a bit old, so can someone tell me is there ...
0
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0answers
29 views

Where to save .p12 Files?

I have many personal .p12 files everywhere in my home directory. I need them for my VPN Connections (with the network-manager-gnome). Is there a special folder for .p12 files in Linux, or do you ...
1
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1answer
55 views

Installed easy-rsa package, but I cannot find the directory

I'm trying to set up OpenVPN, but I cannot generate certs due to not finding the easy-rsa directory. The directory should be located here: /usr/share/doc/openvpn/examples/easy-rsa/ However, when I ...
2
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0answers
73 views

ssh ldap AuthorizedKeysCommand

I have mounted an LDAP server, I generate certificates for my users and I wanted to store certificates in ldap (certificates itself, not their directories), I found the following scheme used to store ...
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0answers
10 views

324 error - certificates

Recently I have a mysterious error using Ubuntu 16.04. I have noticed that Chrome does not load several sites due to ERR_EMPTY_RESPONSE error. I tried to figure out what is happening, and I have ...
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1answer
38 views

How to reactivate personal X.509 and PGP (GPG) keys after upgrading Ubuntu?

I recently upgraded to Ubuntu 16.04 LTS (64 bits). My GPG keys are still there, but aren't working to decrypt encrypted files - it worked fine before upgrading. Same thing for my X.509 certificates. ...
2
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2answers
95 views

Unable to find Installed SSL Certificate on Ubuntu

I am using Ubuntu 14.04 LTS Is there a way to find installed SSL (Not open SSL) certificate on Ubuntu 14.04 LTS
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0answers
144 views

How to use .p7b for Root CA in Ubuntu

I need to add a p7b root ca to Ubuntu, in order to connect to services/servers for my company. Based on what I have found on the internet, it seems that I need to convert this file to either .crt or ....
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1answer
38 views

Ubuntu Server 14.04 suddenly stopped serving webpages

I installed iRedMail and set up virtual hosts to put up my own webpage along side the iredMail installation. I also put in free certificates from StartSSL.com. Everything was working great. Then I ...
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0answers
37 views

NetworkManager StrongSwan No Certificate

I have used vpnc to connect to a VPN successfully, but it has that bug that it disconnects after 8.5 hours. I want to use StrongSwan. It asks for a certificate. I don't have a certificate. In vpnc, I ...
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0answers
101 views

how to uninstall a certificate imported with gcr-viewer? (just double click at .crt in nautilus)

So, I installed this certificate, but nothing changed when accessing the site that seems to require it. Therefore I want to uninstall it, but I cant find a way to do that. I tried this and this, but ...
0
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1answer
32 views

Finalizing VPN, won't save

I have followed a guide on wiki-how for setting up an VPN tunnel to ensure somewhat anonymous internet browsing. I have created a virtual PC with Ubuntu on it and bought a VPS service. I have also ...
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1answer
145 views

Certificate Warning, Is it important? What to do?

I am using Ubuntu 14.04 LTS. The other day I run: sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade and on the last command - after some normal messages I got the following ...
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1answer
264 views

Cannot connect client to landscape server: certificate issue

I've installed Landscape on a new install of Ubuntu 14.04, and I am trying to register clients with it. While attempting to register, I get the "cannot contact server" message and then it returns to a ...
0
votes
1answer
102 views

No certificate files inside of /usr/lib/ssl

I don't appear to have any SSL certs installed on my machine and it is causing issues with wget and Faraday called within Rails. When I run openssl version -a I am told my OPENSSLDIR is "/usr/lib/...
3
votes
1answer
44 views

Any CA Cert trusted by default on ubuntu?

I understand I can copy the CA cert to certain location and run script update-ca-certificate to import CA cert to the system. But I'm curious is there a list of CAs that are trusted by default on ...
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1answer
102 views

Become a trusted Certificate Authority in Ubuntu

Is it possible to become a trusted Certificate Authority in Ubuntu? And if yes, how? This would be really nice.
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1answer
628 views

.What to do when Ubuntu 14.04 LTS curl doesn't support a CA certificate, even though it's valid

On Ubuntu 14.04, I'm trying to do this curl https://api.the-newshub.com/api/1/topics/trending/top. It's not working but it does work when you visit using Firefox. I've updated the certificates: sudo ...
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0answers
25 views

Cannot connect to wifi 14.04 LTS3

I cannot connect to the wifi in my company because there is a certificate that is supposed to be pushed, but is only been done by windows. How do I push this cert from Ubuntu?
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2answers
116 views

Are users of Ubuntu certified computers safe from OEM SSL/TLS tampering?

Please let me raise this question here hoping the we will also receive an official answer, even though this a mostly community driven site. Since Dell now is the second manufacturer after Lenovo (...
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1answer
50 views

How to install .cer files on Ubuntu

I need to install 3 security patches to access to internet. So I have downloaded the 3 patches, the 3 files are .cer type and i don't know how to install these files on Ubuntu. Thanks
0
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1answer
181 views

Correcting NET::ERR_CERT_DATE_INVALID

When trying to open a https site on my server, for which I bought a SSL-certificate, I get a NET::ERR_CERT_DATE_INVALID error in chrome. What do I have to do on my ubuntu server to fix this? This is ...
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0answers
121 views

Connecting to eduroam with CA certs

I have been around on every forum I could find and nothing helped me. I'm running Linux Mint 17.2 Cinnamon and I cannot figure out how to connect my computer for the life of me. I have tried this ...
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0answers
72 views

Ubuntu Company Certificate Help

I'm new to Ubuntu and have a question. My company uses a custom certificate which is put into the certificate chain. Having this, Firefox always asks me to add an exception and also on the terminal I ...
0
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1answer
351 views

How to enable TLS Client Certificate Authentication in Evolution?

I access my contacts via WebDav on the work LAN in evolution. Recently these contacts are also available via https and client certificate. I have added the certificate authority and client ...
2
votes
1answer
34 views

Certificates on Web with Firefox

How do I update certificates when one has expired? In Firefox on both 14.4 AND Windows 8.1 I am getting a lot of certificate errors- either expired or do not recognize the name on certificate. By ...
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0answers
227 views

Ubuntu landscape quckstart skips generation of self-signed certificate

I'm trying to follow these instructions to get my personal Landscape server up and running. I began with a totally clean Ubuntu 14.04 Minimal installation running on a virtual server. Everything ...
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2answers
1k views

Citrix Error “You have not trusted certificate”

I'm having a problem. I installed Citrix receiver icaclient 13.1.0.285639 in a machine running Ubuntu 14.04 LTS. I'm attempting to access my Citrix applications, but I get the following error: `You ...
0
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0answers
688 views

Certificate error while using sudo apt-get update

I installed Ubuntu Server 14.04 on an old machine, and I tried to run sudo apt-get update but it's followed by this error message: Ign http://security.ubuntu.com trusty-security InRelease Ign http://...
0
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1answer
486 views

Curl with SSL failing to download with https (DigitalOcean Ubuntu Server 15.04)

Received this error message: curl: (77) error setting certificate verify locations: CAfile: /usr/local/opt/curl-ca-bundle/share/ca-bundle.crt CApath: /etc/ssl/certs ...when trying to install a ...
7
votes
2answers
11k views

How to fix CA cert issues with Curl in Ubuntu 14.04?

I am using Ubuntu 14.04. When I use curl, I get the following error: curl: (77) error setting certificate verify locations: CAfile: /etc/pki/tls/certs/ca-bundle.crt CApath: From what I gather from ...
0
votes
1answer
40 views

Where are these certificates coming from? [duplicate]

On an Ubuntu 12.04 server I have a bunch of certificates listed in my /etc/ssl directory...where could these have come from? I don't remember adding them myself, do they get generated when aptitude ...
1
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1answer
754 views

SSL Certificate error when adding PPA

I've been trying to install a package from a PPA for some hours now. I am running a freshly installed version of ubuntu 14.04. I've been following these instructions: https://github.com/ethereum/go-...
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votes
3answers
10k views

How to install certificates for command line

So in school we need to install a certificate to access https sites. In firefox, I can import the certificate. However, I can't do so with the command line. For example, running git push I get: fatal:...
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0answers
454 views

Root CA certs - exporting from Windows, importing into Ubuntu

I'm behind a corporate proxy, and we have Windows PCs with root ca certs pre-installed so SSL works with the proxy. Within my PC, I'm spinning up Linux VMs for testing, and so I have a need to get ...
2
votes
1answer
2k views

Missing certificate GeoTrust DV SSL CA - G4

Got a new certificate, but wget and curl are not connecting anymore: wget https://MYDOMAIN ERROR: cannot verify MYDOMAINS's certificate, issued by ‘/C=US/O=GeoTrust Inc./OU=Domain Validated SSL/CN=...
0
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1answer
535 views

Problems using Murmur with self-signed certificate

I made my own CA using openssl and sign other certificates using that Root certificate. I signed a certificate using my CA for use with my Murmur server, and have the following in /etc/mumble-server....
0
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1answer
174 views

SSL for Apache2 Ubuntu Wordpress PLEASE HELP i need direction

Hi i have ubuntu as a webserver and have loaded wordpress on there already. However when implementing SSL (bought from godaddy), the https only works for the homepage https://www.myexample.com but ...
2
votes
0answers
699 views

Add exception for wrong certificate for subdomain “ssl_error_bad_cert_domain”

One of my domains I use has an HTTPS certificate that is only valid for example.com. Whenever I try to access one of the subdomains I get an error: The website uses HTTP Strict Transport Security (...
16
votes
6answers
15k views

Force Pidgin to acept an invalid certificate

I am getting the following error on Pidgin 2.10.10-3.fc20 (libpurple 2.10.10). How can I force it to accept an invalid certificate? (According to this bug report it should be capable). Here's ...
2
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1answer
38 views

Can PGP keys in Ubuntu be replaced?

If some attackers compromised an ISO image of Ubuntu and replaced inner PGP keys , then I will not to able get & install security updates. Is it right? I'm asking it because I possible may meet ...
1
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1answer
586 views

Can't add intermediate cert to ca-certificates.crt via /usr/local/share/ca-certificates

On Ubuntu 14.04.2 LTS, I'm attempting to add an intermediate cert to the system's store of trusted CA certs. I installed the .crt file in /usr/local/share/ca-certificates, then ran update-ca-...
1
vote
1answer
425 views

How can I add a CA at an Ubuntu Phone

I want to syncronise my owncloud server with my new Ubuntu Phone. Therefore I would like to use syncevolution. The server uses a self signed certificate which I would have to add to my ca-certificates ...
0
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1answer
307 views

Which X509 Certificate for Ubuntu Do I Require for Shim UEFI Key Management

Can people please let me know what selections I need to for this - I select enroll from disk and then am presented some .efi entries to choose from. Any ideas/help on what I need to do here as I am ...
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1answer
64 views

Problem With the Digital Signature Very Important

We are using Ubuntu 10.04 and we have our internet portal that purpose we require digital certificate for authentication. We are using Firefox 24.0. The certificate shows in Firefox's preferences but ...
1
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0answers
115 views

Is there any certificate manager availabe by OS in ubuntu (i.e. Windows Certificate Manager)?

Currently I am working with Digital Signing. I am aware that windows is having "Windows Cert. Manager" provided by Windows OS to manage certificates. Is there any default Certificate Manager ...
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1answer
385 views

System Network Certificate window Frozen

I'm using ubuntu 14.04, with gnome-shell. I try to connect to a secure wi-fi network. I enter my login and password, but no certificate -- I'm instructed by my university to ignore the warning (I ...
7
votes
6answers
9k views

download.01.org certificate verification failed - CRLfile missing?

So I had intel-Linux-graphics-installer on my computer but lately when I sudo apt-get update I get the following error Err https://download.01.org trusty/main amd64 Packages ...
4
votes
1answer
1k views

Why can't I import keys into the gnome keyring?

I'm trying to import a private key + certificate into my gnome key ring on Ubuntu 14.10, but the seahorse gui application won't let me, the 'import' button is greyed out: If I try it from the ...
0
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1answer
133 views

Ubuntu 14.04LTS How to generate an a Windows Azure Compatible .cer key

How can I generate a .cer public key certificate file using ubuntu so that I can upload it onto Azure VPN management portal since it doesn't allow any other formats?