Transport Layer Security is a cryptographic protocol for encrypting and authenticating network communications, and replaces SSL. It is commonly used to secure Internet protocols such as HTTP.

learn more… | top users | synonyms

0
votes
1answer
204 views

PURE-ftpd + passive mode + TLS

Could you please help me with settings of pure-ftpd. Here is my actual solution: I have got linux (debian 7.1 wheezy ), where I run pure-ftpd, created virtual users, folder for ftp. I also ...
0
votes
2answers
64 views

Exim forwards not going out through TLS

I'm trying to get Exim to use STARTTLS to send emails that are just FORWARDS. I have a server accepting email at example-accepting.com for users. So I want user@example-accepting.com to forward all ...
-1
votes
1answer
180 views

Encrypt connection to Spice console in browser using HTML5 Spice client

At the moment i'm testing a way to connect to my VMs running on kvm-servers using spice and a browser html5 spice client I found. It was easy to set up, following this guide: ...
2
votes
2answers
74 views

Postfix: Enforcing outbound TLS based on sender and receipient domain?

I know that it is fairly trivial to enforce TLS based on the recipient domain by using smtpd_enforce_tls. I have a use case where I need to enforce TLS to certain recipient domains based on the ...
0
votes
1answer
35 views

Forcing dovecot to use TLS doesn't work

I look for a way to enforce a lamba user to connect to dovecot server with TLS. I followed the documentation http://wiki2.dovecot.org/SSL/DovecotConfiguration , and I edit the dovecot configuration ...
0
votes
1answer
214 views

Nginx: Disable gzip-compression for http only

Because of the BREACH vulnerability I'd like to disable gzip compression for TLS traffic, but not for regular HTTP traffic. I could split up every Nginx server section into two separate TLS- and ...
1
vote
1answer
68 views

What are the effects of having the TLS certificate and private key in same file?

I have noticed that a number of different web and mail server software allow or require you to provide the TLS certificate (including server certificate, CA intermediate certificate, and CA root ...
0
votes
1answer
36 views

Import TLS certificate tu use LDAPS on client machine

I installed OpenLDAP server and I configurated TLS on the same machine (CentosOS 5) . Now I would to use LDAPS from an other machine: How can I import the generated certificate? I used this to enable ...
2
votes
1answer
2k views

OpenVPN Error : TLS Error: local/remote TLS keys are out of sync: [AF_INET]

Fist off thanks for reading this, I appreciate any and all suggestions. I am having some serious problems reconnecting to my OpenVPN client using Riseup.net's VPN. I have spent a few days banging my ...
0
votes
0answers
46 views

How to enable TLS on OpenLDAP

I use CentosOS 5. I have a problem to enable TLS (or ssl) on OpenLDAP server. I followed this tutorial... so: I generate the cerificates; I setted the path in sladp.conf TLSCertificateFile ...
0
votes
2answers
579 views

how to enable TLSv1.1 and TLSv1.2 on nginx Debian squeeze?

For security I have to setup a nginx server with TLSv1.1 or TLS v1.2. By default, nginx configuresTLSv1. Reading the documentation I see that nginx has to set the following directive: ssl_protocols ...
-2
votes
1answer
55 views

Do any well-known CAs issue Elliptic Curve certificates (now that all others are hackable)? [closed]

I know it had been asked before here, but that was back in 2009. Now that it is widely supported by browsers (Requires TLS 1.1, only added in Chrome 22+, FF 23 released Aug 8 2013, IE9+), AND can ...
0
votes
1answer
767 views

OpenSSL and TLS 1.1 and TLS 1.2 - should i update? [closed]

Debian 6s openssl from apt-get is still on 0.9.8 (2010) and doesnt support TLS 1.1 and TLS 1.2. Is there anything why i should not update to the latest stable 1.0.1e ? Or, which build would u ...
0
votes
0answers
103 views

Set Windows Server 2008 R2 SMTP for Opportunistic TLS

I use a Windows 2008 R2 server for sending (relaying) outbound emails to clients. Many of these clients are now requiring TLS connections to send them email. To date I have set up a an SMTP "Remote ...
0
votes
0answers
204 views

Lync webapp not sharing apps/screen due to TLS/SSL issues

So - I am deploying a local install of Lync 2013. I have 1 standard server, 1 edge server, and 1 reverse proxy server using IIS ARR. I do not use NAT, each server has their own individual live ...
1
vote
1answer
47 views

Can I give a friendly error message for connections less than TLS 1.1?

For security reasons, I want to block all TLS connections older than TLS1.1. I also want to give a friendly error message for users who use less than TLS 1.1 on my site. Is there any way to ...
0
votes
0answers
243 views

Storing GPG keys in LDAP with TLS using gpgme

I'm trying to send my GPG public key to our LDAP server, but I'm hitting a wall. My LDAP server only allows LDAP with Start_TLS over port 389, or LDAPS on port 636. I've got the following lines in my ...
-1
votes
1answer
184 views

How to do Postfix accept outgoing mail from another internal servers

I have a MTA with Postfix SSL/TLS configured and sending messages perfectly fine. In the same internal network, I have other servers that I want to send mail through this MTA. In main.cf variable ...
2
votes
0answers
90 views

SSLv2 required on TLS-only site?

This problem has been driving me crazy for a very long time. We have three web servers, serving East, West and Central offices. We built the Central server first, imaged it, and copied the image to ...
5
votes
2answers
2k views

Is STARTTLS more safe than TLS/SSL?

In Thunderbird (and I assume in many other clients, too) I have the option to choose between "SSL/TLS" and "STARTTLS". As far as I understand it, "STARTTLS" means in simple words "encrypt if both ...
1
vote
2answers
663 views

postfix TLS disconnect from unknown

I install centos 6.4 posttfix with sasl and TLS my postconf -e alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases broken_sasl_auth_clients = yes command_directory = /usr/sbin ...
0
votes
3answers
307 views

smtpd_tls_auth_only exclude 127.0.0.1

I configurated postfix to force uses TLS. When an external client try to send an email using this server there is not any problems. But using webmail (127.0.0.1) postfix wants TLS: delivery ...
0
votes
0answers
88 views

Cannot recieve incoming mails from google-based mail services

I use XMail v 1.27 as our SMTP server and openssl v 0.9.8m (prebuilded in XMail distr). Recently I've configured XMail to support SSL/TLS. I already had chains of certificates (one for QA environment ...
0
votes
1answer
289 views

OpenLdap 2.4 on centos 6 doesn't listen on port 636

I have an openldap 2.4 server on centos 6 whose confg I copied from those I have running under openldap 2.3 servers on centos 5 machines. On openldap 2.3, specifying TLSCACertificateFile, ...
4
votes
2answers
336 views

Is there a way to make TLS work with rsyslog in Ubuntu 12.04?

I configure rsyslog to load the TLS module (to talk to loggly) and I'm getting this error: Jun 20 13:14:00 feynman rsyslogd-2068: could not load module '/usr/lib/rsyslog/lmnsd_gtls.so', rsyslog error ...
1
vote
2answers
2k views

None of the cipher suites supported by the client application are supported by the server

I am getting this error in my server's windows event log: An TLS 1.0 connection request was received from a remote client application, but none of the cipher suites supported by the client ...
6
votes
1answer
3k views

How to disable TLS 1.1 & 1.2 in Apache?

I have an Ubuntu 12.04.2 LTS server running Apache 2.2.22 with mod_ssl and OpenSSL v1.0.1. In my vhosts config (everything else within which behaves as I would expect), I have the SSLProtocol line ...
0
votes
0answers
130 views

Access Denied for Specific FTP Client

I have a couple FTP servers setup which I am unable to access using a particular client machine. The client is a Windows 2012 server in my company's network over which I do not have admin rights. ...
1
vote
1answer
679 views

Cyrus can't connect via SSL/TLS

I made a key with sudo openssl req -new -x509 -nodes -out /etc/ssl/certs/imap.pem -keyout /etc/ssl/private/imap.key -days 365 and then I make chown cyrus /etc/ssl/certs/imap.pem and chown cyrus ...
0
votes
2answers
3k views

Postfix & Gmail: Authentication Required error

I configured Postfix using this guide. When I send a test E-Mail I get the following error message: May 23 15:36:26 VM11 postfix/smtp[15321]: connect to smtp.gmail.com[2a00:1450:4001:c02::6d]:587: ...
0
votes
2answers
496 views

Nessus Security Vulnability Fix: SSL Version 2 (v2) Protocol Detection

Below, in quotes, is a medium severity issue discovered after scanning an IIS web server, with a tool called Nessus. "Consult the application's documentation to disable SSL 2.0 and use SSL 3.0, TLS ...
1
vote
2answers
213 views

Do I need to buy SSL certificate for root domain?

I am currently using single SSL cert (non-wild card) on www.example.com, what I found that even if I access the file without the www part, e.g. https://example.com/test.js There is no browser ...
1
vote
0answers
45 views

here filtering terminate TLS in openvpn but not ssl

I have configured an openvpn sever appliance on vmware and windows 2008 R2 and set it to use port 80 for openvpn, iphone and ipad could connect to it but windows and mac could't and generated error in ...
0
votes
0answers
48 views

Disabling TLS in IIS 5 (Window 2000)

I am trying to disable TLS 1.0 in my IIS 5.0, which runs on Windows 2000. I followed the MS instructions (http://support.microsoft.com/?id=187498), but when I checked the traffic with WireShark the ...
0
votes
1answer
76 views

What decides what tunnels inside EAP-TTLS?

If EAP-TTLS is a EAP method that establishes a TLS tunnel, what goes in the tunnel? It could be another EAP method, but it could also be PAP. What decides? The server, the supplicant, or do they ...
0
votes
1answer
521 views

IBM Domino 8.5.3 and mitigating the BEAST attack on TLS (SSLTest)

Having run https://www.ssllabs.com/ssltest/index.html on a newly built Domino 8.5.3 server, is it possible to configure for ...
0
votes
0answers
54 views

Combining CA's into a single PEM

I have been wondering if it is possible to combine two CA certificates into a single .pem, then use that pem to allow clients with certs signed by either CA to create TLS connections with an LDAP ...
0
votes
1answer
170 views

Can't send mail through ssl with my virtual domains from an external webmail

I having issues with postfix to send mail through SSL from an external webmail. I have several domain setup on my server configured in postfix with mysql. When I send mail with my main domain ...
0
votes
1answer
198 views

Removing “noplaintext” from Postfix conf due to lack of CRAM-MD5 support in clients. Is that insecure?

I have enabled TLS support in POSTFIX and authentication is delegated to Dovecot which offers "plain login cram-md5" methods. The SASL section in my Postfix conf had smtpd_sasl_local_domain = ...
0
votes
0answers
149 views

Is it possible to tell whether a server allows TLS/SSL3 without having access to it?

I apologize in advance if this question is a little confusing, my knowledge of SSL certificates is limited. Basically there are 2 third party servers that I would make a call to over TLS. This worked ...
0
votes
2answers
1k views

OpenVPN TLS key negotiation failed

I've setup my OpenVPN server and client before and it works perfect last month. But now i can't connect to the server without any config changing. Here's the cilent side log(Win7): Mon Feb 18 ...
1
vote
2answers
163 views

TCP_NODELAY for an SSL tunnel?

I'm tunneling an HTTP connection over stunnel. The client side does not natively support HTTPS, so stunnel in client mode is used. Would setting TCP_NODELAY=1 help responsiveness in typical web ...
1
vote
2answers
342 views

ldapsearch -ZZ hanging

I have just setup Openldap using the following instructions http://www.computerglitch.net/bin/texts/CentOS6_LDAP.php The normal connection returns what is expected but the tls test just hangs. Any ...
2
votes
1answer
146 views

LDAP expired SSL certificate

The SLL certificate on the LDAP server expired recently, making it impossible to ssh into other Linux machines who relay strictly on LDAP. Being a self-signed certificate, my understanding is that it ...
0
votes
1answer
179 views

slapd 2.4.23 hangs on ldaps connections

New install of CentOS 6.3, openldap-servers-2.4.23. Generated a new certificate request, signed the cert, started slapd. ldapsearch responds on ldapi:/// and ldap:///. However, as soon as a request is ...
3
votes
1answer
700 views

What exactly does the “Proxy TLS” option do on Blackberry handhelds and how does it affect data traffic from the mobile device to BES?

Blackberry OS 7.0 | BES 5.x | AT&T Can someone please explain what the "Proxy TLS" option does (under blackberry device menus Options >> Security >> Advanced Security Settings >> TLS >> Proxy ...
2
votes
2answers
900 views

postfix warning - unused parameter: start_tls= yes

I am a front-end developer and am managing my own linux server for the first time. I'm running Ubuntu 12.04 LTS, and have an SSL certificate. Using Google apps mail as my mailserver, and SendGrid to ...
1
vote
3answers
4k views

How to configure sendmail to relay emails through Office 365 (SMTP) with TLS

I have a box running RHEL 6.3 and there's and application that needs to send out reports by mail, in order for this functionality to work I have to have mail configured in my box. In addition I ...
1
vote
1answer
194 views

Is it possible to configure sendmail to require/use certain ciphers during TLS negotiation?

CentOS 5.x | SendMail I'd like sendmail to use a specific cipher when negotiating a TLS session with a specific remote MTA/domain. Is that possible? I'm aware that a minimum bit strength can be ...
1
vote
2answers
144 views

How can I (securely) get remote desktop back?

In order to make compliance with our PCI-DSS requirements, I was required to disable TLS 1.0 (apparently it has a flaw that was corrected in TLS 1.1 and higher). However, after doing so, remote ...