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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Changing IPTables to Allow FTP over TLS Using Passive Ports

I am using Arch Linux. I followed a tutorial to change /etc/iptables/iptables.rules to allow only the basic ports for my web server. I also used /etc/modules-load.d/nf_conntrack_ftp.conf to enable ...
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Squid filters some of Bugzilla HTTPs URLs

I am trying to finetune web filtering with squid, but meeting ununderstandable behaviour (for me). For example, if I open the following address: https://bugzilla.mozilla.org/ It goes fine. But if I ...
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2answers
488 views

Trying to use TLS SMTP against Exim, getting Security Error back; what's wrong?

OS: FreeBSD9 64 Bit MTA: EXIM4 with TLS with Self Signed Certificate. I am using telnet myserver.com 25 EHLO dummy@dummy.com STARTTLS It says TLS go ahead And then I issue MSG FROM: ...
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3answers
865 views

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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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?
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1answer
838 views

svn: SSL is not supported

I am trying to check out code on a Unix box in the Z shell. When I run the following command svn checkout https://svn.example.net/svn/trunk/source build I get the following error message: svn: SSL ...
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12 views

How to set Exim with TLS on a server with several domains?

I have a Debian Linux server with Exim. I want this server to use TLS when sending emails to supporting SMTP hosts, if a email is created by software on my server (for example with mail or sendmail ...
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2k views

How to check mod_ssl.so version?

I'm running Apache 2.2.3 and would like to find out, how to check version of mod_ssl.so and if this module can support TLSv1.1 and TLSv1.2. Regards
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1answer
52 views

Unable to use a self-signed certif. on localhost

I created a self-signed certificate for localhost for testing as follows: openssl genrsa -out key.pem 2048 openssl req -new -key key.pem -out certificate.csr openssl x509 -req -in certificate.csr ...
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25 views

Installing Plone 5-on-RHEL 7-fails-unable-to-find-libssl-or-openssl-ssl-h

sudo ./install.sh --target=/home/admin/Plone --build-python zeo Error: Unable to find libssl or openssl/ssl.h. libssl and its development headers are required for Plone. Please install your ...
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3answers
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Adding a self-signed certificate to the “trusted list”

I've generated a self-signed certificate for my build server and I'd like to globally trust the certificate on my machine, as I created the key myself and I'm sick of seeing warnings. I'm on Ubuntu ...
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1answer
32 views

Does linux verify server certificate against crl by default?

Let assume that I have a Linux based server running apache or tomcat with a web server certificate created by a trusted authority. The certificate has embedded distribution point of the crl. The ...
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1answer
15 views

wget TLSv1 behaves the same as TLSv1_2

I used wireshark to compare curl --tlsv1.0 vs --tlsv1.2 The server handshake obediently uses TLSv1.0 for servers that support it (the point is to check to validate they don't): wget url ...
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2answers
872 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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6 views

SSL of domain redirecting to plesk panel default screen

I have plesk setup on my linux server, where we have a subscription setup for a website 4ti.co.uk We are getting a strange error where if you go to the domain using https://4ti.co.uk it directs you ...
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80 views

TLS on vsftpd in browser does not exist: 530 Non-anonymous sessions must use encryption

I have installed vsftpd on debian 8 and I configured it in /etc/vsftpd.conf like so: listen=YES pam_service_name=vsftpd use_localtime=YES anonymous_enable=YES anon_root=/var/ftproot/anonymous ...
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1answer
45 views

curl: (77) pbm with the SSL CA cert (path? access rights?)

I am in root in my directory on CentOS release 6.6 and I want to do the following in order to install mysql in upper version on centOS: rpm -Uvh ...
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1answer
5k views

How to remove SSL certificate?

I've been asked to remove certificates from some of our servers, but I don't know anything about httpd configuration. If I have one server where if I do this /usr/sbin/httpd -t -DDUMP_CERTS ...
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1answer
121 views

Use HAProxy to tunnel SSH through https

I have a server with Apache webserver on it and many websites running on http (port 80) and https (port 443). I would like to use a proxy on port 443 in between Apache and the user. In this page, ...
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1answer
86 views

apache2 no listening sockets available, but nothing listening on the port

I'm trying to setup SSL on an ubuntu server. I've generated a key and certificate with the following commands openssl genrsa -out mydomain.key 1024 and openssl req -new -key mydomain.key -x509 -out ...
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27 views

How can I configure TLS1.1 on LFTP?

Could you please help me with the steps to configure TLS1.1 for lftp?Also how can I check which version of TLS is running on my Redhat Linux OS ?
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2answers
71 views

OS X Postfix no TLS found

I'm working on OSX El Capitan. About week ago everything worked fine, but then I changed my gmail password and now I can't send emails any more. Additional configuration for /etc/postfix/main.cf is: ...
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16 views

Rebuild pki directory and associated changes

Let me preface this with, "I am not looking for a free lunch." I royally screwed up my cert storage recently and during my attempt to repair I made things worse. I am looking for a thorough ...
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2answers
367 views

Let' encrypt - nginx - OCSP stapling

I would like to enable OCSP stapling in my nginx server. I'm using nginx version: nginx/1.6.2 debian Let's Encrypt certificate I'm really unexperienced in this matter, so it might be a trivial ...
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1answer
362 views

Apache2 'Server' header reports wrong openSSL version

Does anyone know where the Apache 'Server' header pulls the openSSL version from (file location/directory)? I am expecting openssl-1.0.1j but apache is reporting openssl-1.0.1g (system's openssl ...
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How do I install a system-wide SSL certificate on openSUSE?

I have a PEM certificate that I just downloaded from a webserver. I want to install it system-wide so I can curl the server without it complaining about a missing certificate. I tried putting the ...
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1answer
443 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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1answer
5k views

mutt SMTP TLS error sending mail

When I try to send a mail, I get the following error: gnutls_handshake: An unexpected TLS packet was received. This is my .muttrc (myname, myaddress and mymail are placeholders): # Automatically ...
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1answer
129 views

How to fix curl sslv3 alert handshake failure on Gentoo?

I'm trying open a website with cURL like this: $ curl -vH "Accept: application/json" https://www.rocketleaguereplays.com/api/replays/-1/ The output is: * Trying 104.24.114.83... * Connected to ...
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0answers
1k views

Uninstall all changes made by Letsencrypt

I installed Letsencrypt during the beta, following the instructions in the email, and now it seems broken on my debian jessie server. I try to uninstall letsencrypt and want to start over with my ...
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3answers
63k views

apache2 Invalid command 'SSLEngine'

When I restart httpd, I get the following error. What am I missing? [root@localhost ~]# service httpd restart Stopping httpd: [ OK ] Starting httpd: ...
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51 views

Enabling SSL on ubuntu with apache2

I'm trying to get SSL working on my ubuntu VM. I'm going through the steps in this link but when I got to reload the apache service after enabling default-ssl.conf I'm getting errors in the log: ...
2
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1answer
267 views

What do I do if I can't find ssl.conf file in a CentOS server?

I'm preparing a new CentOS Linux server, one of many. When I try to configure SSL on this server, I noticed there is no ssl.conf file. Not in /etc/httpd/conf.d/ssl.conf and not in ...
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1answer
55 views

This organization's certificate has been revoked. error on IE and Chrome Browser

Server type: Apache/2.2.15 (CentOS) DAV/2 mod_ssl/2.2.15 OpenSSL/1.0.1e-fips mod_qos/10.24 No problem on Firefox browser. on IE and Chrome it displays: This organization's certificate has been ...
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2answers
194 views

How to configure SSL for Apache2 on OpenSuSE 13.1

I have OpenSuSE installed on a virtual hosted Server, running multiple virtual websites. On normal http everything works fine. I now would like to run one of my virtual sites on https in addition to ...
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2answers
2k views

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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23 views

How to decrypt data buffer in kernel level before read/recv [closed]

Before reading contents from socket file descriptor using read/recv(), can we preprocess/modify(e.g. decryption) data buffered in kernel level? I have server&client programs written in C, and I ...
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4answers
4k views

specify certificate of CA in Dovecot

In Postfix, I have specified my private key, my certificate, and the certificate of my CA smtpd_tls_CAfile = /etc/ssl/cacert.pem smtpd_tls_key_file = /etc/ssl/server.key smtpd_tls_cert_file = ...
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3answers
170 views

Apache 2.4 SSL Config - Server rejects requests with HTTP 400

I'm running into some trouble with my Apache 2.4 config. Accessing https://subdomain.my-domain.com always returns this http 400. Bad Request Your browser sent a request that this server could not ...
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7answers
20k views

invalid SSL_version specified at /usr/share/perl5/IO/Socket/SSL.pm line 332

Since I upgraded my PC from (k)ubuntu 12.04 to 12.10 I receive this error message when trying to send an email using sendemail. Installing an older version of IO::Socket::SSL is not an option. I ...
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1answer
170 views

“crypto failure” error when running various commands

I'm finding that a few commands (for now dig and nslookup) that fail no matter what with the following output: 19-Jan-2016 15:01:50.219 ENGINE_by_id failed (crypto failure) 19-Jan-2016 15:01:50.219 ...
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0answers
32 views

How do I get a manifest to run from my Puppet Master server to a Puppet Agent node?

I am trying to run a Puppet manifest for the first time on two new servers. But I keep getting errors. I recently set up two CentOS v7 servers. They have passwordless SSH between them. Ports 22, ...
2
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2answers
164 views

Cannot connect to localhost on port 4430

I am running vagrant from a virtual box with CentOS and Nginx installed. I've created a reverse tunnel from the vagrant box to a remote server but when I am trying to connect to my localhost on port ...
0
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1answer
28 views

openSSL Key and Certificate

As far I know, in an authenticated SSL connection, both the client and server have private keys and provide their certificates (with the corresponding public keys) across the connection before ...
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1answer
24 views

Apache Listening Port

I need for some help. I'm trying to set-up a web interface for a cloud system and I have used this conf (provided by the vendor) <VirtualHost *:443> ServerName sxweb.foo.com ServerAdmin ...
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2answers
48k views

How can I verify SSL certificates on the command line?

I'm trying to validate/verify that the rsa key, ca-bundle, and certificate stored here are ok. They are not being served by a webserver. How can I verify them?
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1answer
716 views

Sendmail with TLS support changes FROM: address

I have multiple domains on one server and when sending email to server, which supports TLS, server changes FROM field to default domain ($j). What should i do (in .mc level please) to remain primary ...
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16 views

Apache 2 Debian SSL Certification not exist

I'm not really good with Apache and that is the reason why I'm writing to you. I have installed a web server in SSL following some indication from the software vendor. When I restart the service I ...
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1answer
33 views

What are the drawbacks of using policy_any in openssl.cnf?

As given in this document, we may use policy_any to ignore most of the fields of subject in certificate request. There must be some drawbacks of ignoring such fields, would it may lead to some ...
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0answers
18 views

Apache and SSLVerifyClient

Please excuse any dumb statements regarding this. I am very new to Apache and to HP-UX. I am a SQL Server DBA and ended up on this project. I am working to try and implement SSL with Client Verify ...