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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886 views

VSFTPD - FTP over TLS - Upload stops after exactly 82k?

I installed a VSFTP daemon on a CentOS server, using a RSA certificate for logging in using explicit TLS. Now, I cannot upload more than 82k. With files under that limit, there is no problem. The FTP ...
2
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1answer
424 views

Node.js with SSL/TLS protocol v1.2

I would like to use TLS 1.2 on my node.js server. I'm currently using openssl 1.0.0e. If I upgrade to openssl 1.0.1, do I need to rebuild node.js to upgrade to TLS 1.2? Are there configuration or ...
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1answer
210 views

TLS from Radius for Wifi is rejected by Win7

We do have the following Setup at our company Synology RS812+ hosting LDAP, RADIUS, DNS (Version DSM 5.0-4458 Update 2) 2*Cisco Wifi APs WAP561 (Firmware 1.0.3.4) Cisco Router ISA500 (Firmware ...
1
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1answer
52 views

Does Postfix need a TLS cert for every destination domain?

When Postfix is the destination for multiple domains, does it need a TLS cert for every one of them, or just for the domain in $myhostname? That is to say, are there smtp clients out there who will ...
1
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1answer
450 views

Two Exchange 2003 servers, Internet SMTP Connector using port 587 on smarthost: no longer internal connectivity between the Exchange servers

To summarize: I set things up (this is a virtual test/tutoring environment), broke internal connectivity by introducing Internet mail connectivity, figured out where the problem was, but now I'm ...
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1answer
462 views

disable Postfix TLS support for specific destination server

I am trying to configure postfix to disable TLS for a specific remote smtp server that serves for multiple recipient domains. I have set up a policy map that already contains some entries for ...
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1answer
399 views

Plesk 10 Postfix with multiple IP adresses and SSL certificates

We are currently running a root server with Debian 6 and Plesk 10.4.4. We have some virtual hosts using one IP adress (shared) - e.g. example1.com - and another virtual host using a dedicated IP ...
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1answer
142 views

Can Subject Alternative Name accommodate multiple virtual mail domains?

I am currently running a postfix server with self signed certificates serving one mail domain, mycompany.com, the mail server is mail.mycompany.com and so is the CN of the certificate. Now, I need to ...
0
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1answer
46 views

Postfix selectively enforce TLS

I am running postfix in Debian Wheezy as my MTA. I currently have it configured to require secure connections for SMTP. In main.cf I have: smtpd_tls_auth_only = yes smtpd_tls_security_level = ...
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1answer
131 views

“Certificate not trusted error” for eap-tls

I'm setting up freeradius as the authentication server for 802.1x. While testing the config using rad_eap_test, the server returns the following error: [tls] <<< TLS 1.0 Handshake [length ...
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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 ...
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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 ...
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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 ...
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1answer
175 views

TLS with GNU Mailutils 0.6 IMAP4d

I have been fighting with the ancient GNU Mailutils 0.6 for quite a while now. I am supposed to set up the IMAP4d service from this version for an IT security exercise. I may not update the program, ...
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1answer
547 views

Can't send email via SMTP in Postfix/Ubuntu, but can receive it fine using IMAP/POP3

I'm running Ubuntu, have Postfix installed. Followed https://help.ubuntu.com/community/Postfix to the letter. I can receive email via IMAP and POP3 perfectly in Thunderbird. But when I try to send ...
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1answer
156 views

Configuring sendmail to only use starttls in client mode

Is it possible to configure sendmail so that it will only connect to a remote smtp server when STARTTLS is offered there? I so - how do I do it?
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0answers
32 views

Can TLS-enabled rsyslog use a certificate revocation list?

When using the gtls driver, is it possible to configure rsyslog to use a certificate revocation list? We are running rsyslogd 5.8.10 (standard in CentOS 6.5).
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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 ...
2
votes
0answers
210 views

Forcing IIS virtual smtp server to verify outgoing TLS certificate

I am in a situation where a web application is using the IIS virtual SMTP server to send out email. The IIS virtual SMTP server is then configured to send all mail out through a smarthost, over TLS ...
2
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0answers
305 views

Dovecot TLS Handshake not working

I have set up my mailserver using http://workaround.org/ispmail and it worked until today, where I can not access the server using IMAP. The error I see in dovecot.log is 2012-02-09 16:37:40 ...
2
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0answers
2k views

TLS (STARTTLS) Failure After 10.6 Upgrade to Open Directory Master

Environment: Mac OS X 10.6.3 install/import of a MacOS X 10.5.8 Open Directory Master server. After that upgrade, LDAP+TLS fails on our MacOS X 10.5, 10.6, CentOS, Debian, and FreeBSD clients ...
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0answers
13 views

Monit failing to connect to Dovecot over SSL IMAP

I run Monit to keep check on processes on a Debian server. It's working as normal for all other services (Apache SSL, Postfix, SSH etc.) but Monit's checks on Dovecot are failing repeatedly. I think ...
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0answers
54 views

Is it possible to create DANE TLSA records when the DNS server doesn't support it?

I'd like to set up DANE for the domain which handles my email. My domain is registered at OVH, and I'm using their anycast DNS servers. They do support DNSSEC, but not TLSA records. Is there a ...
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0answers
236 views

Why OpenVPN client fails to start (TLS timeout) when wifi signal is not ideal?

I have OpenVPN clients running on Carambola2 devices [1] and when I use 3g/umts stick or wired ethernet then OpenVPN clients establish vpn tunnel every time. When wifi is used then OpenVPN client ...
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0answers
49 views

Get and set the certificate used by Exchange with port 587 (submission)

Sometimes users want to use POP3/SMTP with Exchange. They report that there is certificate issue with sending mail as the server uses the domain certificate for encryption. Of course I could install ...
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0answers
37 views

How can I test connectivity to a TLS-enabled OpenVPN server?

Unfortunately we don't have access to the management interface, so I'm after a way to tell that tls-enabled OpenVPN us up and responsive. I'm familiar with this trick, but it doesn't work for ...
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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 ...
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0answers
164 views

openSuse and openldap:ldap only login

I 've managed to setup ldap server and i can search it succefully from the server machine. i ve added to the database all info except from the fstab file and automount info. I migrated succefully the ...
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0answers
258 views

Postfix : outgoing mail in TLS for a specific domain

I am trying to configure postfix to send mail in TLS (starttls in fact), but only for a specific destination. I tried with "smtp_tls_policy_maps". This is the only line in my main.cf file regarding ...
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0answers
201 views

Exchange 2010 TLS Cert questions

I'm trying to wrap my head around with enabling TLS for a specific domain on Exchange 2010 server but I have a few questions that I'm sure you guys have an answer to. I've gone through this guide ...
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0answers
432 views

(apache `mod_proxy`) reverse proxy - how to reuse TLS sessions to origin server

I have set up a reverse proxy which can be accessed by http only, client requests are translated to http or https communication towards the origin server. Configuration is as follows: ...
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0answers
447 views

Postfix and OpenSSL: “Unable to get local issuer certificate”

I bought a certicifate for my mail server and configured it in Postfix like so: smtpd_tls_security_level=may smtpd_tls_CAfile = /etc/ssl/certs/ca-certificates.crt smtpd_tls_cert_file = ...
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0answers
441 views

Encrypted Alert Error 21 Wireshark SSL 3.0 error

I continue to receive schannel errors in the event log on an exchange server using outlook web access (OWA). From the capture I took during one of these schannel errors I see IP address 65.55.53.190 ...
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0answers
41 views

ISPConfig 3 on Ubuntu 12.04, is it possible to enable SSL/TLS for dovecot for multiple domain?

I'm in the mists of setting up a web host for a friend and I'm new to using ISPConfig3. Previously, for my own web host I managed manually from cli. For ISPConfig3, I followed the official setup guide ...
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0answers
75 views

Fixing TLS renegotiation vulnerability on Apache 2.2.3

On a RHEL 5.3 server, I have Apache version: Server version: Apache/2.2.3 Server built: Nov 12 2008 07:09:03 Server's Module Magic Number: 20051115:3 Server loaded: APR 1.2.7, APR-Util 1.2.7 ...
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0answers
64 views

EAP-TLS MSCHAPv2 Windows Server Certificate Requirements for RADIUS

I am trying to get RADIUS (freeradius) in our Network working, there are still some problems with Microsoft Supplicants which reject the certificate installed on the RADIUS Server There is a ...
0
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0answers
70 views

Solaris LDAP client: nss Failure to load dynamic library

On Solaris 10 and 11, I have successfully set PAM_LDAP up. The Solaris host uses a remote LDAP for user authentication. However, I am unable to get TLS working. ldapclient setup I initiate my ...
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0answers
53 views

Postfix: Server to Server encrypted communication

I just built a Postfix, Dovecot and Spamassassin (ClamAV + Amavis) stack on my dedicated server. In the last two years I was using iredmail, wich was OK, but I was a bit sceptical because of my lack ...
0
votes
0answers
35 views

In an Inbox rule in Outlook, is it possible to determine that an email was sent as Domain Authenticated (Mutual Auth TLS)?

Background I have successfully configured Domain Authenticated (Mutual Auth TLS) email between my company (Exchange 2007) and a client (Exchange 2010). This gives us a green tick on emails from ...
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0answers
61 views

TLS connection error on Centos 5.x

My server is running Centos 5.x suddenly got TLS related problem. Anything relates to TLS is broken. For example: My postfix is relaying email via Amazon SES got problem , relay=none, delay=22590, ...
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0answers
217 views

OpenLDAP server logs filled with “TLS negotiation failure”

I recently migrated an old OpenLDAP setup to a newer server, with a more robust certificate setup. Currently, most hosts are required to verify the cert matches the host: tls_checkpeer yes ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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. ...
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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 ...
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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 ...
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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 ...