SSL (the predecessor of TLS) is a cryptographic protocol designed to provide communications security over a computer network. It is the S in HTTPS, IMAPS, SMTPS, etc.

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Install ssl on CentOS Apache server

I installed Apache by using sudo yum -y install httpd instead of using wget and installing that way. This means that it has been set up differently. I'm now trying to install ssl by using sudo yum ...
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67 views

Cannot disable SSLv3 on Amazon Linux Instance

I am using SSL Certificate issued by Go Daddy. On my Linux Instance following are the software details :- Apache Version - Apache/2.4.16 (Amazon) Openssl Version - OpenSSL 1.0.2c 12 Jun 2015 ...
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123 views

Get latest files with lftp

I would like to know if it was possible to download all latest files on an ftp server with lftp without downloading the older files. Examples; On my server I have /doc /vps /order/{id} /order/{id} ...
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1answer
103 views

Add warning to emails received by Postfix without TLS

Is it possible with Postfix to add a warning to all emails received over a cleartext (non-TLS) connection? For example modifying the subject and/or adding a custom header.
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43 views

How do I add self-signed certificate to trusted list in Mageia

I am trying to add self signed certificate for my repository into trusted list in Mageia 5. But when I execute sudo urpmi.addmedia name repo_link I get ...retrieving failed: curl failed: exited with ...
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Verify SSL for local computers

I have a small business network and for this network, one computer is DHCP-, DNS- and web server. It uses local domains like machinary.ao or resources.ao I'd like to use ssl. Computers and network ...
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2answers
1k views

Wget TLS 1.2 error

According to the manual, I should be able to specify TLS version 1.2 when using wget. When I try, it fails. wget https://site --no-check-certificate --secure-protocol=TLSv1_2 wget: ...
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532 views

`lftp` does not connect to FTPS (ftp over ssl)

I have trouble in connecting lftp with ftps (ftp over ssl, not sftp!) server (FTP Server Ultimate (PRO version).) running on Android phone. Technical details: Linux part. Following : ...
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80 views

How can I safely send email over encrypted connection from the command line?

I found the following related questions on the stackexchange network: stackoverflow - Connecting to smtp.gmail.com via command line serverfault - Using nc.exe (NetCat) to send emails to secured SMTP ...
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43 views

SSL Problem, Where should I insert the certificate.crt?

I'm using startSSL. I've got a private key.key, a certificate.crt and a decrypted key.key for private key.key. What should I do with this files and where should I upload them? How can I get https for ...
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script to check if SSL certificate is valid

I have several SSL certificates, and I would like to be notified, when a certificate has expired. My idea is to create a cronjob, which executes a simple command every day. I know that the openssl ...
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1answer
62 views

How to use feh to open web image with self-signed certificate

I'd like to use feh to open an image located on a server using a self-signed certificate. Is there any way to achieve this? I checked the man page in hope of finding something similar to curl's -k, ...
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338 views

Can't disable SSLv3 in Apache + mod_nss

I am trying to implement TLS through mod_nss in Apache (RHEL 7). As per the documentation, I have installed mod_nss and removed mod_ssl. I have followed the steps outlined in the documentation (see ...
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2answers
399 views

How to verify a service is listening on both ipv4 and ipv6?

I want to check whether https service is listening on both IPv6 and IPv4. And also when I am accessing url via browser, I want to know request is served by IPv4 or IPv6.
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92 views

fetchmail: Missing trust anchor certificate:

I try to setup fetchmail on mac for checkdomain.de and created a certificate .pem file in the cert directory of ssl by copying certificate from running this command: openssl s_client -connect ...
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233 views

SLES cant upgrade packages via zypper or yast2

getting errors whenever this box tries to phone to grab a package via yast: There was an error in the repository initialization. Download (curl) error for ...
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1answer
173 views

mutt SSL unknown protocol - not able to connect

I am facing following situation. I am using arch linux I installed mutt the email client I followed the simple guidelines in the arch wiki to configure mutt to use imap For the simple config where ...
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1answer
121 views

vsftpd: use Explicit SSL in a different port than unencrypted FTP

I've managed to run vsftpd with unencrypted FTP, Implicit SSL, and Explicit SSL. What I'm looking for is a way to run it with Explicit SSL, but have a separate port for SSL. For example: port 15000 ...
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4answers
234 views

How can I find where the Location of SSL key file is?

I inherited a RedHat server and I'm trying to find the SSL key file that was used to generate the self signed cert so I can make a CSR. From what poking around I've done, I can't find it in any of ...
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83 views

SSL installation on apache2 / debian

So I have a debian wheezy installation where I someone started to install SSL but gave up and so I'm here to finish the task. problem - when accessing with http (port 80) - all is working. When ...
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22 views

Does postfix support MySQL connections over SSL

I have a postfix server and a MySQL database server. I setup MySQL SSL and have it working successfully. I can connect from postfix to mysql with the user requiring SSL. The problem I have is, when I ...
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1answer
143 views

Allow specific linux user to bind to port 443

I am in charge of setting up a JBoss web application that runs over SSL, thus should be accessible over port 443. Of course, it can be started up by user with root privileges, but that is something ...
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92 views

Why does SSL negotiation fail on Linux? (Asus P5S-MX) (but worked on Windows7)… FIXED, but UNRESOLVED

Can anyone give me hints to why the web requests fail in these wireshark/tcpdump traces ? (and perhaps a hint why a Linux distro would start with SSLv3 as starting point) I am noob when it comes to ...
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2answers
470 views

Wildcard SSL certificate does not work with naked domain

I have deployed a wildcard certificate (Comodo PlatinumSSL) for *.domain.com on Apache/Ubuntu 14.04. Everything works if the client visits https://www.domain.com but https://domain.com throws up this ...
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397 views

Generate Private Key for Existing SSL Certificate

I have been provided with a Comodo SSL certificate to deploy with Apache/ModSSL on Ubuntu 14.04. All I got was an email with links like this. I was not provided with a private key. It appears the ...
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56 views

RewriteRule ^/(.*) http://127.0.0.1:5050/$1 [L,P]

What is the full meaning of following line - RewriteRule ^/(.*) http://127.0.0.1:5050/$1 [L,P] There are three application both running by python on ubuntu 14.4. they are visible as below link ...
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508 views

NGINX: 400 The plain HTTP request was sent to HTTPS port

i setup nginx for proxypass to docker registry, the protocol http works but if i set https i have: 400 The plain HTTP request was sent to HTTPS port This is my nginx configuration file: upstream ...
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check_nrpe ssl couldnt complete handshake, in both master and client server it works fine individually

I am getting this check_nrep ssl couldnt complete handshake erro in master server when i try executing the below command. /usr/local/nagios/libexec/check_nrpe -H 10.192.122.234 10.192.122.234 --> ...
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48 views

Is this a violation? using https service in intranet?

I have CentOS 7 servers in the cloud which is offering HTTPS services. Now this Enterprise can't use our services from the cloud, so they wanted a local intranet solution, the same as I am running in ...
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2answers
120 views

How to generate a CSR for attaching SSL certificate to the site? [duplicate]

How can I generate a CSR for attaching SSL certificate to the site? In various articles about installing SSL certificates are described different ways of generating private key and CSR. That's like ...
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122 views

Adding nssdb certificate from an install script

I am trying to write an script (postinst for a .deb package) that will install a secure websockets (wss:) application and a certificate that allows access from the Chrome browser. The developer has ...
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How to convert ssl ciphers to curl format?

The official ssl docs list ciphers in a different format than curl takes. For instance, if I want curl to use the cipher TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, I have to pass it curl --ciphers ...
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How to see list of curl ciphers?

My understanding is that during ssl negotiation, the client (i.e. curl) sends a list of ciphers to the server, and the server replies with its preferred choice. How do I see the list of ciphers that ...
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Dovecot with CAcert certificates, Outlook can't connect to IMAP

I have quite standard installation of postfix and dovecot on Ubuntu 12.10. I generated my own certificates and got them signed by cacert.org. The process of creating certs was like below: openssl ...
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4k views

Cannot send mail to gmail account using ssmtp

I have the following ssmtp.conf file: root=test@gmail.com mailhub=smtp.gmail.com:587 hostname=ed424cef9b52 UseTLS=Yes UseStartTTLS=Yes AuthMethod=LOGIN AuthUser=test AuthPass=test ...
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A question about sendmail macros and tls

http://docs.oracle.com/cd/E19120-01/open.solaris/819-1634/fvbqm/index.html Here i read some sendmail macros must be edited on mc file to work I want tls use version 1 and strong cipher How to put ...
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367 views

wget: force no default certificates

I'm having trouble with verification of custom server SSL certificates and wget. wget -O- --ca-certificate=myservercert.pem https://www.google.com This should fail but does not, as wget does ...
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Unable to locally verify the issuer's authority

I am not able to open any https URLs using wget or curl: $ wget https://www.python.org --2015-04-27 17:17:33-- https://www.python.org/ Resolving www.python.org (www.python.org)... 103.245.222.223 ...
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Can I make davfs ignore untrusted certificates?

My server provides WebDAV over HTTPS only, so that other machines can access the DAV. Say the certificate is issued for www.myserver.com and the WebDAV is at https://www.myserver.com/webdav. For ...
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2answers
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Multiple RSA server certificates not allowed

I purchased a multidomain certificate, and I was trying to install it on my server. I put the following information inside the virtual host for one of my sites: <VirtualHost *:443> ... ...
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1answer
364 views

How to find more details on Invalid Certificates

Setup I am following this blog post to set up ASP.net MVC5 on Linux. When I get to the part that adds the Microsoft certificates, I am warned that they are invalid. For example, this command: ...
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libssl undefined reference to symbol 'SSL_load_error_strings@@OPENSSL_1.0.0'

With the following CMakeLists.txt (I tried to snip it AMAP) https://gist.github.com/pbertoni/29200833dc562ab6ee2c I got this error from make at linking time: /usr/bin/ld: ...
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1answer
469 views

Script timed out before returning headers: iredadmin.py

I am trying to access my iRedMail backend at https://domain.com/iredadmin However, it keeps timing out with a 500 error. I check my error log, and I see the following: [Sat Apr 11 16:53:41 2015] ...
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1answer
63 views

Apache ReverseProxy ssl

I have the following ReverseProxy set up which works for http requests: NameVirtualHost *:80 <VirtualHost *:80> ServerName sub.domain.com ProxyRequests Off ProxyVia Off <Proxy *> Order ...
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696 views

Mplayer fails to play network stream

I'm trying to play youtube streams with mplayer. On running mplayer -cache 2048 https://www.youtube.com/watch?v=USUA_1WVM8I, I get the following output and the video does not play at all. MPlayer ...
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71 views

Looking for an email server that supports mysql ssl connection

I am trying to secure connections to my MySQL server. I have SSL set up but I am looking for programs that support a SSL connection to MySQL. Specifically I am currently looking for an email server ...
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660 views

Configure KVM/QEMU with TLS?

New to virtualization and kvm and I have a problem when i try to create a virtual machine with spice: virt-install --name Windows-7-x64 --ram 2048 --disk path=~/kvm/images/win7.img,size=50 --vcpus=1 ...
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194 views

OpenVPN TLS Error

I'm having trouble getting OpenVPN to work. I have installed and configured OpenVPN on my centos machine and it seemed to be going fine. I followed the instructions in the following link ...
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2answers
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How to fix curl sslv3 alert handshake failure?

I'm trying to curl HTTPS website in the following way: $ curl -v https://thepiratebay.se/ However it fails with the error: * About to connect() to thepiratebay.se port 443 (#0) * Trying ...
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1answer
2k views

Does Apache 2.2.3 support TLSv1.1 and TLSv1.2?

How can I find out if Apache 2.2.3 supports TLSv1.1 and TLSv1.2? If possible how can I implement it?