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
0answers
6 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 ...
-1
votes
0answers
11 views

Recommended setup for F5 with multiple EXIM servers behind

I have following setup: 4 EXIM 4.80.1 servers. All mail relay clients are redhat linux , I use mailx command for testing relay from clients specified in "hostlist" on exim.conf Have valid cert ...
-2
votes
0answers
21 views

How to enable TLS 1.2 in apache?

How can i enable tls 1.2 on my ubuntu server, and do i have to upgrade my openssl first? # apache2ctl -v Server version: Apache/2.2.12 (Ubuntu) # openssl version -a OpenSSL 0.9.8g 19 Oct 2007 built ...
-2
votes
1answer
21 views

Windows Server 2012 R2,Foundation Edition Tls 1.1 & 1.2

Does anyone know if Windows Server Foundation edition R2 includes the latest cryptographic libraries? Specifically tls 1.2 and 1.1? ...
1
vote
1answer
30 views

Add SSL certificate after curl error: “unable to get local issuer certificate”

I'm trying to access a partners SOAP API, for that goal I made a CSR and received a CRT. I've made a PEM file with my key and the CRT: cat mycert.crt mykey.key > mycertandkey.pem When I try to ...
-1
votes
1answer
38 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 ...
3
votes
1answer
37 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. ...
3
votes
1answer
23 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 ...
0
votes
1answer
90 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
1answer
13 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
votes
2answers
29 views

My server request needs to be converted from Http to Https

My application performs some HR related functions. When the user hits "apply leave" button, at the back-end it validates against employer credentials. If everything is fine then code is written that ...
0
votes
1answer
37 views

Exchange 2010 rejecting Amazon SES TLS with UntrusedRoot

Due to our network setup, when we moved our business last year we switched Exchange 2010 to use AWS SES to relay our outgoing emails. This has worked pretty well up until yesterday, when Exchange ...
1
vote
0answers
27 views

HTTP Strict Transport Security (HSTS), Azure and HTTP Strict Transport Security IIS Module

Question: How do you properly install and configure HTTP Strict Transport Security (HSTS) in an Azure website? Apparently for IIS the method to use is to install this module: ...
0
votes
0answers
29 views

Certificates not working optimally with NGINX

I have a test NGINX server that behaves strange with certificates. I have compiled NGINX 1.9.1 and custom openssl-1.0.2a on an Ubuntu 14.04-server. $ nginx -V nginx version: nginx/1.9.1 built by gcc ...
1
vote
1answer
43 views

How to mitigate STARTTLS MITM (downgrading and forged certificates) between email servers?

I'm not as technically inclined as most on this site so please keep that in mind. I wanted to learn more about email security so I did some research and everything is according to my understanding, ...
1
vote
1answer
57 views

All LDAP traffic is being sent on TLSv1.1 not TLSv1.2

I have a kvm server, Centos 6.6 host with 6.6 guests. We run a php based web app that uses LDAP authentication for our clients. We just moved a client to this setup and they are reporting that all ...
0
votes
0answers
21 views

Secure LDAP replication over the Internet

I have a remote site in which I'll need to authenticate my users. I have my users in a LDAP db. Thus my idea is to replicate the OpenLDAP server to the remote site to perform authentication locally ...
1
vote
1answer
74 views

How to solve TLS error in Filezilla FTP client? [closed]

When i try to connect a site files by Filezilla FTP client, i get the following error Status: Connecting to 91.109.7.88:21... Status: Connection established, initializing TLS... Error: ...
1
vote
1answer
64 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 ...
4
votes
2answers
608 views

How to fix the Logjam vulnerability in OpenVPN server config?

As of this writing (Day-2), there are quite few accurate guidelines as to how to mitigate Logjam for Apache and other web servers, such as this page: https://weakdh.org/sysadmin.html What are the ...
0
votes
0answers
25 views

How to make Postfix SMTP TLS Optional?

Just did an [emergency] conversion from qmail to postfix last night - but now I'm getting people complaining that mail client errors are showing up stating "no available encryption methods available" ...
1
vote
0answers
30 views

Key management for HAProxy instances in OpsWorks

I'm trying to use client certificate verification in an OpsWorks HAProxy instance. The question I'm running into, and it's probably a noob issue, is how am I supposed to deploy my ssl private key to ...
2
votes
1answer
261 views

WARNING: None of the ciphers specified are supported by the SSL engine

I have a working web service running through Apache Tomcat 7 with the following connector element in server.xml: <Connector port="443" protocol="org.apache.coyote.http11.Http11Protocol" ...
1
vote
1answer
106 views

Postfix mandatory smtp/smtpd vs “not mandatory” difference and configuration

Three questions: Correct me if I'm wrong: smtpd_tls_mandatory_ciphers => settings for incoming mandatory TLS encryption smtpd_tls_ciphers => settings for incoming opportunistic TLS encryption ...
0
votes
1answer
50 views

Connect to websocket server without specifying port

I'm trying to create a secure node.js server without a websocket server on the same port. The port is 8080. I can access the url in the browser and I can connect to websockets when I specify the ...
0
votes
2answers
60 views

What happens when legacy browser or OS attempts to acces https site with SHA-2 certificate

I'm researching the impact of changing a site's SSL certificates to SHA-2 hash in order to avoid the "obsolete cryptography" from Chrome. I found this page, which contains a table of OSs and browsers ...
-1
votes
2answers
68 views

How to set “server preference” for tls cipher suites?

Mozilla has a tool to generate server configurations at Mozilla SSL Configuration Generator. For Amazon Elastic Load Balancing (ELB), the configuration does not appear to have a setting for "use ...
1
vote
0answers
30 views

How to correctly secure Reverse Proxy communication with actual server in LAN

I have Nginx acting as gateway and reverse proxy for requests based on host name. However, the communication with the actual server in lan isn't secured. Does the connection remain encrypted with ...
0
votes
1answer
73 views

IIS 7.5 FTPS stops working when disabling TLS 1.0

Trying to get a windows 2008 R2 server to the latest PCI standards, which require disabling of TLS 1.0 FTPS stops working once TLS 1.0 is disabled. TLS 1.1 and 1.2 are enabled and all other SSL ...
0
votes
0answers
85 views

Apache server chooses TLS1.2 for all request even when TLS1.2 is disabled in IE9 / Windows7

Following is my apache ssl protocol and cipher configuration SSLEngine on SSLProtocol all -SSLv2 SSLCipherSuite HIGH:MEDIUM:-SSLv2:!ADH When tested on IE9 with TLS1.2 checkbox checked in ...
21
votes
4answers
4k views

How do I disable TLS 1.0 without breaking RDP?

Our credit card processor recently notified us that as of June 30, 2016 we will need to disable TLS 1.0 to remain PCI compliant. I tried to be proactive by disabling TLS 1.0 on our Windows Server 2008 ...
0
votes
1answer
25 views

Mail server not picked up by TLS diagnostic tools

I have mailing server under mail.luken-tech.pl . Can anyone explain how this: https://www.ssllabs.com/ssltest/analyze.html?d=mail.luken-tech.pl&hideResults=on shows "Assessment failed: Unable to ...
0
votes
1answer
52 views

How to check if clients connect to IMAP/POP via TLS or SSL?

I am willing to disable SSL on my dovecot servers (Debian GNU/Linux), leaving TLS as the only option. Before doing so, I would like to know who is still connecting via SSL with older or misconfigured ...
0
votes
0answers
72 views

Send data over DTLS with socat

I'm trying to exchange files over DTLS with socat with one-liner client/server. I'm able to do it with UDP: server:socat -d -d -lh -lu UDP-LISTEN:5000,reuseaddr,fork OPEN:out.dat,create client:socat ...
3
votes
2answers
253 views

How to create TLS SHA256 certificate request

One of our business partners is requesting us to use a TLS SHA256 certificate to connect to their APIs. I am not sure how to generate these requests. I have used openssl in the past to create these ...
1
vote
3answers
709 views

Windows Server 2008 R2 - SHA2 based Cipher Suites

I am currently in the process of upgrading the SSL certificates for various websites that I manage from SHA1 to SHA2 compatible certificates. To date we have always used 'RSA' as the key exchange ...
1
vote
1answer
126 views

nginx: How to log TLS error (if unsupported ciphers / protocol)

I'm in the progress of switching to 100% https. Server is running nginx+libressl. Before going https:100% I'm interested in seeing which clients would no longer be able to connect to my site. E.g. ...
2
votes
1answer
105 views

Reverse proxy TLS version

I have a TMG 2010 (Forefront Threat Manager Gateway 2010) sitting on Windows Server 2003 R2 and I have several websites published through it. One of the websites is sitting on Windows Server 2012 R2. ...
1
vote
1answer
169 views

Outlook/Exchange certificate errors after setting clientaccessserver, etc… properties

After updating exchange 2010 using the commands for Set-ActiveSyncVirtualDirectory, Set-ClientAccessServer, Set-ECPVirtualDirectory, Set-OABVirtualDirectory, Set-OWAVirtualDirectory, & ...
0
votes
1answer
235 views

Weblogic Mitigate POODLE vulnerability after upgrade and still use CBC ciphers

I recently upgraded my Weblogic server to 10.3.6 with java 7. So with that I have TLS1.0 - TLS 1.2 enabled via the setEnv.sh. Some of the ciphers I am using to make sure that they are compatible ...
1
vote
2answers
114 views

Consequences of disabling SSL2 and SSL3 on our webserver

Our system is quite old and as a result gets an F grade for SSL from Qualsys SSL because the server supports SSL2 and SSl3. We have now identified all the browsers people are using. The oldest is ...
0
votes
0answers
86 views

Nginx TLS renegotiation

Our webserver has recently failed a PCI compliance test due to existence of "TLS Session Renegotiation Vulnerability" (CVE-2009-3555) However I'm not sure whether those results are right. We're using ...
1
vote
1answer
115 views

SSL_VERSION_OR_CIPHER_MISMATCH in chrome 42

My ssl-enabled site has stopped working in Chrome 42. It still works in Chrome 41. Qualys's test doesn't cover Chrome 42, but it also doesn't raise any issues that indicate it's about to stop ...
1
vote
0answers
695 views

Your connection to website is encrypted with obsolete cryptography in Chrome [closed]

I can see the warning in about the our SSL certificate. This is chrome browser alone. See the below screenshot. I have check this problem in some links, they mentioned there is problem in key ...
3
votes
1answer
384 views

IIS 7.5 and above - enable schannel cipher DHE_RSA_AES_128_GCM following patch KB2992611 - Is this safe?

I recently became aware that following the release of patch KB2992611 in November, Microsoft made available four new cipher suites for schannel (and thus IIS); TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 ...
2
votes
1answer
54 views

How to check SSL connectivity between certificates installed on two different server

Suppose there are two organizations which share information with each other. Every organization installs SSL certificate in their application server and provides the same certificate to other ...
1
vote
1answer
63 views

Freeradius TLS cetificate(win 7 and previous)

I'm configuring FreeRADIUS 2.2.6. I use TLS because TTLS is not supported by windows 7. With Windows 8.1 the WiFi connection works very well without installing certificate With Windows 7 and ...
1
vote
1answer
523 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
1answer
270 views

Can I configure IIS 7.5 Forward Secrecy to redirect for unsupported browsers (I.E.)?

I have successfully configured Windows Server 2008 R2 with IIS 7.5 serving my Asp.Net 4 application for forward secrecy utilizing the information from here I still have visitors/user with downlevel ...
0
votes
0answers
32 views

vsftpd service with tls enabled exit code 2

I am trying to set up TLS for VSFTPD on CentOS7. Whenever I try to start the service it fails with exit code 2 and no other information. anonymous_enable=NO local_enable=YES write_enable=YES ...