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.

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103 views

Sophos firewall default settings do not allow HTTPS from Java 6 clients

Our current (default) Sophos firewall (Apache reverse proxy) settings does not allow Java 6 clients to connect over HTTPS. The ssltest result shows that the reason is "Client does not support DH ...
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2answers
260 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
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1answer
237 views

What are Best Practices for setting a https node server via a reverse-proxy without using Apache or Nginx

I am trying to get a Node https server accessed through a node proxy. I bought certificates and got a standalone https server working fine. Initially there were some hiccups because of multiple certs ...
0
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1answer
151 views

TLS-PSK vs TLS-PKI

I have read that once TLS-PSK encryption is about equally secure as TLS-PKI. The level of security by both depends on the data entered to configure the encryption. Could you please confirm this? ...
0
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0answers
97 views

OpenVPN TLS handshake fails on freebsd10

I am trying to configure a new VPN server but the TLS handshake fails. I worked with #openvpn for some time and we narrowed it down to a failure at the server but what exactly, no one has a clue. All ...
1
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1answer
214 views

How to make Apache trust a client certificate using an unknown CA, without validating the CA

I am in the following situation. I need to set up a 2-way integration with an external system. The admin of the external system required me to send two CSRs, one to be used to generate a client ...
2
votes
3answers
5k views

Disable all but RC4 in apache

Our PCI compliance vendor requires that we disable all but RC4 encryption on our web server. Currently our apache config file looks like this: SSLHonorCipherOrder On SSLCipherSuite RC4-SHA:HIGH:!ADH:...
0
votes
3answers
105 views

Did I install stunnel correctly?

Running Ubuntu 14.04 64-bit. apt-get install build-essential -y apt-get install libssl-dev -y apt-get install wget -y cd srv wget https://www.stunnel.org/downloads/stunnel-5.23.tar.gz tar -xzf ...
0
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0answers
33 views

Policy Enforcement Point (PEP) in Windows

We are supposed to be implementing a file-transfer solution between us and a third-party, which uses a dedicated private line between us and them, and FTPS (i.e. FTP over SSL/TLS) to transfer files. ...
0
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0answers
54 views

How to secure a service with Mutual SSL Authentication and Intermediary CA?

Given: A working SSL mutual authentication setup (a WCF service hosted in IIS) No Intermediary CA In the current setup any client in the world having a certificate signed be one of the well known ...
20
votes
2answers
30k views

How to inspect remote SMTP server's TLS certificate?

We have an Exchange 2007 server running on Windows Server 2008. Our client uses another vendor's mail server. Their security policies require us to use enforced TLS. This was working fine until ...
0
votes
2answers
155 views

Confused about SSL certificates needed for Windows proxy

I am completely new to security, and I'm confused about what kind and how many SSL certificates I need. I have a REST API server running on a windows server 2012. It's currently listening to HTTP ...
12
votes
3answers
25k views

Why is Internet Explorer 11 unable to connect to HTTPS sites when TLS 1.2 is enabled?

Normally I don't use Internet Explorer at all. I use it only in design time for interface tests (development machine and with unencrypted http). Every week I run the SSL Labs server test which says ...
0
votes
0answers
258 views

wpa_supplicant doesn't reach freeradius in 802.1x eap-tls wired

I want to setup a 802.1x EAP-TLS connexion with freeradius, wpa_supplicant and a Cisco Switch My network : supplicant eth0-----f1/1 SWITCH f1/0-----eth1 Freeradius the SWITCH is an emulated Switch ...
1
vote
1answer
54 views

POSTFIX only receive email if server hostname is included in email address

I have this situation: postix/sasl/dovecot I recently added dovecot and sasl and i can only receive email to postfix if i use this email format: user@serverhostname.domain.com If i use desired ...
4
votes
2answers
5k views

How to disable RC4 in Windows 2012?

I want to disable RC4 in Windows Server 2012. From this link, I should disable the registry key or RC* [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Ciphers\RC*] ...
0
votes
3answers
1k views

Enable only TLS 1.2 connection to my website

All those web browsers that cant make a TLS 1.2 connection to my website should not be able to access it. I am using apache tomcat server. What all configurational changes do I need to make in order ...
3
votes
1answer
240 views

How secure is this Nginx Config? What else can I do to optimize it further? [closed]

So I recently setup a personal GitLab server and I am using the following config with full SSL. I tried my best but what else can be done to make it better? I mostly learned what I know about ...
0
votes
0answers
49 views

How to disable some ciphers in nsSSL3ciphers command?

Referring to Sun Directory Server Man Page Reference, can anybody tell whether - or + is really needed for scenario? I need to: enable only TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, and disable ...
2
votes
1answer
170 views

How to add DANE/TLSA on a wildcard subdomain?

I would like to enable DANE/TLSA on *.example.com for https. To activate it on example.com I can do that (I used TYPE52 instead of TLSA because my DNS provider is not DANE-aware): _443._tcp.example. ...
0
votes
0answers
139 views

OpenVPN version 2.3.8 server on Windows 8 TLS Errors and Issues [closed]

So I've followed the https://community.openvpn.net/openvpn/wiki/Easy_Windows_Guide to the point, but I get a TLS error when I try connecting to the server from my mac as a client. Initial packet from ...
0
votes
0answers
945 views

Transparent Proxy Issues w/ HAProxy Centos 7

Having issues following steps to transparent proxy outlined here: Howto transparent proxying and binding with HAProxy and ALOHA Load-Balancer | HAProxy Technologies – Aloha Load Balancer Believe to ...
0
votes
0answers
227 views

Certificate rejected by Exchange (SubjectMismatch Chain Validation) works with openssl s_client

I am trying to establish a TLS connection between Exchange 2013 and a non-Windows SMTP server. An internal Windows CA was used to generate the certificates for Exchange and the SMTP server. The SMTP ...
0
votes
1answer
87 views

Client certificate authentication with no access to private keys

We are trying to set up client certificate authentication for VPN users on Cisco ASA. User certificate store is being used to complete the authentication. The problem we are running into is that the ...
1
vote
1answer
387 views

TLS Error: Handshake failed. Openvpn Server is behind NAT on dynamic ip

this is a common problem that appears easily in searches and seems to be related to the firewall , yet I can't seem to figure out how to fix it. I have actually asked before, but this time I come back ...
0
votes
0answers
84 views

Squid proxy unable to use LDAP/S on CentOS 6

I've configured Squid proxy to authenticate against Active Directory. With plain LDAP, everything works as expected. However, when I try to use LDAP/S, I get these error messages: p11-kit: couldn't ...
20
votes
4answers
42k views
1
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3answers
2k views

How to get SNMP/ILO notifications when my SMTP requires TLS?

We have an aging HP Proliant ML350 G6, Server 2008 R2, running ILO 2, and the System Management Homepage is using SNMP as its data source. This is a barebones server install, hosting our virtual ...
0
votes
0answers
154 views

Haproxy Layer 4 balancing with TLS

We have ssl3 turned off in favor of TLS. Most the tutorials on https for layer4 support with haproxy, ie ssl passthrough, uses check-ssl or ssl-hello-chk. In our setup this will fail because we have ...
0
votes
0answers
40 views

Multiple SSL certificates in Apache with clients using different certificates

Our setup is like this. SOAP services are exposed and clients send requests to SOAP endpoints. Each node provides the SOAP services. There can be one or more (maximum 6) nodes as a cluster. Multiple ...
1
vote
1answer
316 views

Tomcat solution on https://weakdh.org has typos?

Do the non-GCM ciphers listed for the Tomcat fix on https://weakdh.org/sysadmin.html have typos? Under "Apache Tomcat" heading and below the text "In the server.xml file (for JSSE)" there is the ...
2
votes
1answer
252 views

How do I connect to an OpenVPN server and dump the certificate chain presented when connecting?

My first thought was to use something like openssl s_client but this only supports TCP not UDP and it seems there requires some special magic to get TLS over UDP working, how do I interface with that ...
1
vote
1answer
3k views

How to disable TLS 1.0 on exchange 2010

We had a PCI scan and it wants us to disable TLS 1.0 on our server 2008 R2 server running Exchange 2010 (14.03.0248.002). I used IIS Crypto 1.6 build 7 to disable it. SSLLabs gives us an A now, but ...
0
votes
0answers
54 views

TLS 1.0 registry change not working Windows 2008 R2

I have a Windows 2008 R2 server and we are trying to re-enable TLS 1.0. Around 3-4 months ago, someone disabled TLS 1.0 using the method described in this question: Do I have to enable TLS 1.0 in ...
1
vote
1answer
157 views

syslog-ng EC2 TLS

I am attempting to add TLS support to my syslog-ng service running on an AWS EC2 instance (logs are being sent to loggly). The basic configuration without TLS works, but when I replace the destination ...
1
vote
1answer
111 views

Can server and client both use a certificate with the same CN?

I am working on implementing TLS for a Client-Server application. But, the problem is both client and server are in same server: both communicate with just a port number. So what should the common ...
3
votes
2answers
581 views

Sendmail down on Ubuntu 12.04 after update, SSL related?

I posted this on askubuntu.com yesterday but haven't gotten any responses. We run a production Ubuntu server that serves thousands of people per day. Sendmail is currently not working on this server. ...
1
vote
1answer
78 views

Drop non-TLS connection on EXIM

How to restrict access to EXIM to clients with STARTTLS? I want to be able to drop non-TLS connections. Current setup: tls_on_connect_ports = 465 tls_advertise_hosts = * tls_certificate = /some/...
0
votes
1answer
135 views

Why don't I receive the emails forwarded by Postfix?

My desired Postfix configuration is to forward all incoming mails according to virtual aliases and be able to send outgoing mails via SMTP and TLS. Sending already works, but the forwarding does not. ...
3
votes
0answers
264 views

LDAP over TLS fails to connect, Schannel Alert 48

I am trying to use PHP to edit users in active directory through LDAP. My test machine is using a simple WAMP setup and is NOT connected to the windows domain. This machine can connect to LDAP on the ...
-2
votes
1answer
81 views

Windows Server 2012 R2,Foundation Edition Tls 1.1 & 1.2 [closed]

Does anyone know if Windows Server Foundation edition R2 includes the latest cryptographic libraries? Specifically tls 1.2 and 1.1? http://blogs.msdn.com/b/kaushal/archive/2011/10/02/support-for-ssl-...
-1
votes
1answer
512 views

TLS 1.0 handshake fails in Windows Server 2012 R2

I am using Windows Server 2012 R2 to contact AWS services, namely https://elasticbeanstalk.eu-central-1.amazonaws.com/. However, the AWS toolkit for Visual Studio as well as Internet Explorer 11 fail ...
-1
votes
1answer
209 views

DHE cipher suite issue

I am now using this cipher suite: SSLCipherSuite "ECDHE-ECDSA-CHACHA20-POLY1305-SHA256:ECDHE-RSA-CHACHA20-POLY1305-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-...
3
votes
1answer
36 views

Can I use different certifcates for www and Exchange?

I have a website www.domainname.com and a published Exchange address of webmail.domainname.com The website is hosted offsite and the Exchange server is on-premises. I need extended validation for the ...
1
vote
1answer
732 views

Jetty 9 support for TLS_FALLBACK_SCSV

I've been trying to get that A+ on the SSL Server Test @ SSL Labs. However, I can't figure out how to pass the "downgrade attack prevention" test: I'm running Jetty 9.3.0.v20150612 alongside ...
2
votes
2answers
495 views

Determining if an SSL cert is affected by SHA-1 phase-out

Google chrome will start to warn users that their SSL connection is insecure under the following conditions: The cert uses the SHA1 hashing algorithm, and The cert expires on or after 2016-01-01 (or ...
-2
votes
1answer
37 views

TLS for outgoing mail (following ISPmail) not working

I built my mailserver on a vserver after the ISPmail tutorial (https://workaround.org/ispmail/wheezy) (which is awesome). The only remaining problem is that it does not seem to use TLS with outgoing ...
1
vote
2answers
4k views

Disabled SSLv3 to combat Poodle now cannot connect to SQL “Connection forcibly closed by remote host”

I have disabled SSL3 on my web server to combat the Poodle Vulnerability and now I am unable to connect to my SQL server using SQL Authentication. I just get "Connection forcibly closed by remote ...
4
votes
2answers
6k views

Is it possible to enable TLS v 1.2 in Debian squeeze

I am currently running a Debian Squeeze server with Apache. My OpenSSL version is 0.9.8, and I would like to get up to a version capable of running TLS v 1.2. So far my research shows that this is ...
2
votes
1answer
673 views

How can the HSTS header be added to WebLogic?

Is there an implementation for using the Strict-Transport-Security header to WebLogic? I figure it would be using something in web.xml under <security-constraint> I know how to do this for an ...