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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In nginx logs: SSL3_GET_CLIENT_HELLO:required cipher missing

We disabled SSLv3 several months ago, and on Sunday I noticed this filling our nginx logs. It's been continuing ever since and users are emailing us saying they cannot connect to our site. 2015/01/13 ...
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1answer
698 views

Postfix Recipient address rejected: Access denied Error

Trying to use zend mail smtp to send email from my php app login authenticated and give me this constant error I don't have to deal with I look into de 36 question here on serverfault.com changing ...
2
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1answer
351 views

Logstash-forwarder TLS handshake error - Server selected unsupported protocol version 301

I have the problem below just with windows. I tried with linux and it works fine. When I run: .\logstash-forwarder-master.exe -config .\logstash-forwarder2.conf With logstash-forwarder2.conf: { ...
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92 views

Remmina TLS, NLA works, but high encryption fails

Remmina works fine with TLS and NLA. But if encryption is set to high instead of client compatible, then it stops working. Questions: 1. Why setting high encryption prevents connectivity? 2. What's ...
2
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2answers
5k views

Server sent passive reply with unroutable address when connecting to FTP site with FileZilla

I get the error "Server sent passive reply with unroutable address. Using server address instead." when connecting to a FTP site (not SFTP). I have connected to this site many times, however ...
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1answer
255 views

How to update libssl for TLS_FALLBACK_SCSV vulnerability on nginx configuration?

I can't get the TLS_FALLBACK_SCSV to work when testing on SSLabs, keeping me from an A+ rating. Seems it an issue of libssl, not nginx configuration. I have updated to OpenSSL 1.0.1k 8 Jan 2015, but ...
2
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0answers
115 views

OpenLDAP TLS - test results in Bad file descriptor

I have set up an openldap server including tls on ubuntu 14.04 following this guide. While testing the connection, I get results that I can not find an explanation for. ldapsearch -xLLL -Z -W -D ...
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2answers
171 views

Nginx SSL certificate served for all server name resolving the server IP

Given I have 2 subdomains configured in the DNS (so pinging both reply for both with the IP address of my server) and for those subdomains I have 2 different TLS certificates. I have configured nginx ...
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1answer
88 views

Getting error TLS not available when connect via StartTLS

I am trying to configure TLS on my mail server (postfix+dovecot on debian). But whenever I try to send via StartTLS, I've got this error message telnet localhost 25 Trying ::1... Connected to ...
6
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2answers
421 views

What effect does https traffic have on web cache proxy servers?

I just took two university courses on computer security and internet programming. I was thinking about this the other day: Web cache proxy servers cache popular content from servers on the web. This ...
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1answer
107 views

How to proxy requests from Nginx to SSL server

My curl request looks as follows: curl --header "Authorization: Basic BASE_64" https://example.com --tlsv1 -k (I need to explicitly provide TLS and skip verification) and it works. I'd like to ...
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2answers
230 views

Perfect Forward Secrecy (PFS) for mail servers

Perfect Forward Secrecy is an important enhancement to SSL/TLS communications, helping prevent captured SSL traffic from being decrypted even if the attacker has the private key. It's easy enough to ...
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2answers
432 views

How widely supported is forced TLS on inbound SMTP connections?

I run an MTA consisting of the standard Postfix, SpamAssassin, ClamAV, SPF/DKIM checks etc. This MTA is used for inbound email only, doesn't host any accounts and forwards any mail that passes said ...
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1answer
512 views

Enabling TLS1.0? Cannot communicate securely with peer: no connection encryption algorithms

For over a year I have been running a photo based website that allows customers to order prints, which are subsequently fulfilled by a printing company. Orders are posted in XML format to a ...
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1answer
47 views

EAP-TLS: is it possible eavesdropping when sharing client certificate?

I want to know how to share a network of WPA2 enterprise with EAP-TLS, authenticating users with a common certificate. They share the same certificate. I'm afraid they can monitor each other. Is ...
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2answers
3k views

Do I have to enable TLS 1.0 in windows 2008 R2?

Do I need to enable TLS 1.0 in Windows Server 2008 R2, or is it enabled by default? I did search and found out that TLS 1.1 and 1.2 is supported but disabled by default. How about TLS 1.0? I tried ...
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0answers
665 views

IIS Site breaks after disabling SSLv3

I am trying to disable SSLv3 on a 2008 R2 web server that runs IIS 7.5 but as soon as I disable SSLv3 and reboot, the website is no longer reachable. I ran a packet capture with SSLv3 still enabled ...
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178 views

Disable SSL3 on tomcat4

I have a very old web application that uses tomcat4. B/c of the poodle vulnerability I need to disable SSL3 and disable a bunch of weak ciphers. My connector looks like this, but apparently ...
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0answers
51 views

How can I explicitly disable TLS when sending to one specific recipient?

I have a SendMail 8.14 server deployed in the middle of an SMTP workflow (Outbound mail looks like Exchange -> SendMail -> Appliance -> Internet) I have TLS configured for the first three hosts. ...
3
votes
1answer
503 views

2008 R2 TLS 1.2 enabled in registry, rebooted, but not functioning

Yes, I rebooted the server. Several times. This actually affects both TLS 1.1 and 1.2. The only one currently working is 1.0. I followed the instructions here: http://support.microsoft.com/kb/245030 ...
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346 views

How to disable TLS v1 in Apache v2.2 (Openssl 1.0.1)

I’ve been asked to disable SSL v3 and TLS v1 on our web servers. But Apache reports: [error] No SSL protocols available [hint: SSLProtocol] when I include –TLSv1 in the SSLProtocol stanza below. ...
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1answer
226 views

IIS 7.5 FTP with ftps (SSL)

I have an FTP server that uses IIS 7.5, running on a Windows Server 2008 machine. When I try to connect to this server using filezilla with implicit TLS (ftps://), I always recieve this error: GnuTLS ...
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0answers
250 views

How to configure Coldfusion 10 CFLDAP to use TLS instead of SSL2

We are using CFLDAP to authenticate users from a remote system. The remote system has now shut down SSL 2 and 3 due to the POODLE issue. Is there a way to configure either Coldfusion or Tomcat to use ...
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2answers
2k 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 ...
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2answers
485 views

Is it possible to set SSL/TLS version HTTP header with Apache which an backend application can use?

There is one service on a virtual machine with a dedicated IP that required to be accessible via SSLv3 (WinXP with IE6 clients). I moved that service several several years ago to a that virtual ...
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0answers
1k views

GnuTLS error -15: An unexpected TLS packet was received

I have been trying to set up VSFTPd on my CentOS 7 machine, and I have been running into an issue when connecting through FileZilla. I keep receiving error -15 regarding the TLS packet. The following ...
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votes
3answers
347 views

Postfix and compromised accounts

First of all, sorry for my English. I think it's very common to set the permit_mynetworks and permit_sasl_authenticated restrictions on first positions of the smtpd_recipient_restriction list, but, ...
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1answer
306 views

Ubuntu SSL connection with TLS connection error [closed]

I am using Ubuntu 12.04, installed at VirtualBox (Mac) using vagrant. I am not using any proxy server. In my company network, when I try curl -1vsS ...
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1answer
2k views

Internet Explorer 8 - TLS Fatal Error Close Notify - Oracle HTTP - Server Apache 2.2.22.0

I applied the POODLE fix for Apache via "SSLProtocol All -SSLv2 -SSLv3" in the ssl.conf file for our Apache server but am having issues with the CAC Client authentication via "SSLVerifyClient ...
2
votes
2answers
104 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 ...
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1answer
69 views

Does SendMail Support TLS Certificates With Subject Alternative Names?

CentOS 5.x Does SendMail support TLS certificates with Subject Alternative Names? I have a set of sendmail servers and would like to use the same certificate for all of them (to save time and ...
3
votes
1answer
341 views

Can TLSv1 / SNI be blocked by the network? (routers, firewalls, etc)

Our web site serves static content through a content delivery network (AWS CloudFront) which is configured to respond to a number of CNAMEs and use our SSL wildcard certificate for these hostnames. ...
2
votes
1answer
323 views

Centos SMTP error command not implemented

I have a vps with Centos 6.5 and postfix installed. When I want to connect to a smtp server like google or mail gun, I get the error 502 command not implemented. Can anybody help me please? This is ...
1
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1answer
294 views

Is it possible to configure ECDHE-ECDSA with mod_gnutls and Apache 2?

I'm trying to configure my Debian box with mod_gnutls implementation (for sake of SNI), to achieve best possible results in TLSv1.0/1.1/1.2 (disregarding both SSL2 and SSL3) However it seems to me, ...
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0answers
31 views

Is there a way using the shell to install certificates and enable encryption in 389 directory server?

My client has a 389 directory server installation that I discovered does not have SSL enabled on it. I would like to do this but I've always had to do it using the Admin console. At some point they ...
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1answer
561 views

openssl s_client shows TLS working on ports 993,465, but mail clients time out on connection attempts

With the recent scares over POODLE, we have begun the process of changing everyone's connections to TLS, instead of SSL... While this process went smoothly for HTTPS, it seems that Dovecot & ...
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2answers
9k views

How can I verify if TLS 1.2 is supported on a remote web server from the RHEL/CentOS shell?

I'm on CentOS 5.9. I'd like to determine from the linux shell if a remote web server specifically supports TLS 1.2 (as opposed to TLS 1.0). Is there an easy way to check for that? I'm not seeing a ...
0
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1answer
342 views

Tomcat 7 URL rewrite from other domain

On a tomcat 7 server, we've configured a https connector, the TLS certificate is valid for an URL like www.example.com . Now we want to change the A record of one of our subdomains (like foo.bar.com) ...
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0answers
98 views

SSL with rsyslog on CentOS - protocol family not supported?

For the life of me, I can't seem to get rsyslog to have imrelp use TLS(SSL). I've engaged the good people on http://kb.monitorware.com/post25017.html#p25017 to try and chase the rsyslog angle, but I'm ...
5
votes
1answer
154 views

Is it possible to configure IIS to redirect based on the SSL cipher suite used for the connection?

With the announcement of POODLE, I would like my servers to accept SSL3.0 connections but have them serve a page which indicates that the user should update to a newer browser with TLS support. It ...
4
votes
2answers
2k 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 ...
0
votes
1answer
153 views

LDAP Replica with TLS

I'm having trouble to run the replica LDAP with TLS, without TLS, all works !! Provider and Consumer are identical CentOS release 6.5 rpm -qa | grep ldap openldap-clients-2.4.23-34.el6_5.1.x86_64 ...
0
votes
1answer
212 views

Using self signed certificates with Tigase XMPP server

I am trying to use a self signed certificate, generated using http://docs.tigase.org/tigase-server/5.3.0/adminguide/#_server_certificates, to start the XMPP server. However, the server does not start ...
2
votes
1answer
160 views

Why does Windows CA Server issue multiple certificates for the same user?

I am currently implementing an EAP/TLS WIFI implementation to replace our EAP/MSCHAP2 wifi implementation. I am using Windows Server 2008 and I've installed a certificate authority. User certificates ...
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1answer
1k views

phpldapadmin not being able to connect to LDAP server using ldaps

Update I have been able to reproduce the problem in a smaller scale using a simple php script that attempts an LDAP bind. From that script I got more debug output which lets me identify the actual ...
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1answer
129 views

Exim says “The request is invalid” during gnutls_handshake

I have Debian wheezy and setup Exim to listen to port 587, where users can authenticate using TLS. I'm testing it with Thunderbird 31.1.2. When I try to send a message, Thunderbird displays this: ...
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1answer
141 views

postfix cannot communicate with target server via TLS/SSL

I am able to connect my postfix server with TLS. All things are set up. But when i send a message with this secure connection, target server (for example gmail) receive my message without TLS/SSL ...
3
votes
1answer
618 views

Specify a SHA-1 or SHA-2 cert depending on client abilities

With SHA1 certs being deprecated by major browsers it seems wise to get a SHA2 signed cert. But in doing so you will be locking out IE6 users. While for most people this won't be an issue in some ...
0
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1answer
542 views

Exchange TLS Receive Connector Cert

We are using Securence incoming filtering in front of our Exchange 2010 server. It's basically a spam filter. I'm trying to get TLS communication between Securence and our server on incoming ...
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1answer
202 views

How do I set up TLS-PSK with Tomcat [closed]

The Tomcat people won't help me, so I'm hoping someone here will come through. I can't figure out how to set up Tomcat to use pre-shared keys. All the SSL/TLS guides for it assume certificates. Please ...