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• One user sometimes gets an unknown certificate error opening Outlook

  - by Chris

  Let me clarify a little. This isn't an unknown certificate error it's an unknown certificate error in so much as I can't figure out where the certificate comes from. This happens on a Win 7 Enterprise machine connecting to Exchange 2010 with Outlook 2010. The error he gets is that the root is not trusted because it's a self-signed cert. Take a look at this screenshot because even if I had generated this myself I wouldn't have put "SomeOrganizationalUnit" or "SomeCity" or "SomeState", etc. (Red block covers our domain name.) I'm a little concerned this is a symptom of a security breach. Exchange 2010 has three certificates installed but none of them are this certificate. They all have different expiration dates (one is expired) and different meta-data. edit: There are two scenarios that I see the certificate warning and one of them I can reliably repeat. When the user leaves his computer on over night Outlook pops the Security Warning window. I don't know what time this happens. Using Outlook Anywhere if I connect to Exchange externally via a cellular USB modem the Security Warning window will appear every time I close and reopen Outlook. Whether I say Yes or No does not make a difference on whether or not I can connect to Exchange and send/receive email. In other words, I can always connect to Exchange. I've checked my two Exchange servers and my Cisco router for a certificate that matches this one and I can't find it. edit 2: Here is a screenshot of the Security Alert window. (I've been calling it Security Warning... My mistake.) edit 3: I stopped seeing this error several weeks ago but I can't tie it to any single event (because I just sort of realized that warning had stopped showing up) but I think I found the source of the certificate. Last week I found out that the certificate on our website DomainA.com was invalid. I knew that our web admin had installed a valid certificate so when I look into the problem I found out I was being presented with the invalid certificate that this posting is in regards to. The Exchange server's domain is mail.DomainA.com so I can only guess that Outlook was passing this invalid certificate through as it did some kind of check on DomainA.com. This issue is still a mystery because the certificate warning stopped appearing several weeks ago whereas the invalid certificate issue on the website was only fixed last week. It ended up being a problem with the website control panel. The valid certificate was installed but not being served for some reason and instead the self-signed cert was being served.

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• IIS FTP 7.5 Data Channel Problem (SSL)

  - by user59050

  Hey there I wonder if anyone can get me in the right direction. I am setting up both a FTPS Client and Server, FTPS Server using Microsoft’s iis FTP 7.5. On the client side it will be running on Linux and I am using M2crypto for the openssl wrapping (python). I am worried the problem is on the server side (iis7.5) due to the following discovery : If I host using Filezilla with BOTH the control and data channel being forced to be encrypted it works 100% (100% file transmission), if i use iis as the server everything works up to the point when the data channel takes over... i.e. all data of the retrieved file is already received correctly in my basket! The ftp server just won't send the final '226 Transfer complete.' on the cmd socket. Why? If i force the client or server to close the connection the file is 100% intact....If i use iis 7.5 with forced encryption on control channel all works 100% as long as i don’t force data channel... Here are some screenshots to demo this... Client View after Kill Client : pics @ http://forums.iis.net/p/1172936/1960994.aspx#1960994 Summary : We can establish the connection, do directory listings, start the upload, see the file (0bytes) created on the server but then the client hangs. If we terminate the client, the uploaded file on the server suddenly jumps up to full size.

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• Buying a certificate - what to spend and where

  - by bergin

  Hi there My boss wants to buy a certificate for his SBS so external connection can be made. they access on an IP number. What should he spend on the certificate? Where should he buy from? Verisign seems like overkill as its not an ecommerce site, just needs some security. Ive seen some cheap ones at $20 / yr - are there any problems with getting cheap certificates?

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• mod_ssl RPM conflict

  - by 0A0D

  I build Apache httpd into an RPM using these sites: http://erikwebb.net/blog/compile-and-install-apache-24-red-hat-enterprise-linux-rhel-6-or-centos-6 http://ramblin-dude.blogspot.com/2013/04/compiling-rpm-for-httpd-on-rhel-57.html I was successful at building apr* and httpd*. However, when I try to install httpd using rpm -Uvh httpd-devel-2.2.25-1.x86_64.rpm httpd-2.2.25-1.x86_64.rpm mod_ssl-2.2.25-1.x86_64.rpm I get the following error: package mod_ssl-2.2.3-82.el5_9.x86_64 (which is newer than mod_ssl-2.2.25-1.x86_64) is already installed. I have httpd 2.2.3-82 installed. Do I need to remove it first? Seems counterintuitive.

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• Root certificate authority works windows/linux but not mac osx - (malformed)

  - by AKwhat

  I have created a self-signed root certificate authority which if I install onto windows, linux, or even using the certificate store in firefox (windows/linux/macosx) will work perfectly with my terminating proxy. I have installed it into the system keychain and I have set the certificate to always trust. Within the chrome browser details it says "The certificate that Chrome received during this connection attempt is not formatted correctly, so Chrome cannot use it to protect your information. Error type: Malformed certificate" I used this code to create the certificate: openssl genrsa -des3 -passout pass:***** -out private/server.key 4096 openssl req -batch -passin pass:***** -new -x509 -nodes -sha1 -days 3600 -key private/server.key -out server.crt -config ../openssl.cnf If the issue is NOT that it is malformed (because it works everywhere else) then what else could it be? Am I installing it incorrectly? Update I tried changing the certificate attributes, but to no avail: openssl genrsa -des -passout pass:***** -out private/server.key 2048 openssl req -batch -passin pass:***** -new -x509 -nodes -sha256 -days 3600 -key private/server.key -out server.crt -config ../openssl.cnf

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• Host couldn't be reached by domain name, only by IP: Apache's fault?

  - by MaxArt

  I have this Windows Server 2003 R2 32 bit machine running Apache 2.4.2 with OpenSSL 1.0.1c and PHP 5.4.5 via mod_fcgid 2.3.7. This config worked just fine for some hours, but then the site couldn't be reached with its domain name, say www.example.com, but it could be still reached by its IP address. In particular, while https://www.example.com/ yielded a connection error, http://123.1.2.3/ worked just fine. Yes, first https then http. Error and access logs were clean, i.e. they showed no signs of problems. Just the usual messages, that were interrupted while the site couldn't be reached. After some investigation, a simple restart of Apache solved the problem. Unfortunately, I didn't have the chance to test if https://123.1.2.3/ worked as well, or if http://www.example.com/ was still redirected to https as usual. So, has anyone have any idea of what happened? Before I get tired of Apache and ditch it in favor of Nginx? Edit: Some log informations. The last line of sslerror.log is from 90 minutes before the problem occurred, so I guess it's not important. ssl_request.log shows nothing interesting, too: these are the last two lines before the problem: [28/Aug/2012:17:47:54 +0200] x.x.x.x TLSv1.1 ECDHE-RSA-AES256-SHA "GET /login HTTP/1.1" 1183 [28/Aug/2012:17:47:45 +0200] y.y.y.y TLSv1 ECDHE-RSA-AES256-SHA "POST /upf HTTP/1.1" 73 The previous lines are all the same and don't seem interesting, except 4 lines like these 30-40 seconds before the problem: [28/Aug/2012:17:47:14 +0200] z.z.z.z TLSv1 ECDHE-RSA-AES256-SHA "-" - These are the corrisponding lines from sslaccess.log: z.z.z.z - - [28/Aug/2012:17:47:14 +0200] "-" 408 - ... x.x.x.x - - [28/Aug/2012:17:47:54 +0200] "GET /login HTTP/1.1" 200 1183 y.y.y.y - - [28/Aug/2012:17:47:45 +0200] "POST /upf HTTP/1.1" 200 73

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• Add "secure" in cookie by httpd server

  - by Abhishek

  How do I have to configure my httpd server to add "Secure" in the cookies? I tried the one in the below link, http://blog.modsecurity.org/2008/12/fixing-both-missing-httponly-and-secure-cookie-flags.html but this did not seem to be working. I inspected the cookie via firebug and found that the cookies have "HttpOnly" but not "Secure". I double checked the configurations and they the same as mentioned in the link. I also noticed that the server response time goes bit high when doing it by mod_security. Is there a better way to do it? Any ideas or pointers to configurations would be helpful

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• Our company claims that the DLP system can even monitor the contents of HTTPS traffic, how is this possible?

  - by Ryan

  There is software installed on all client machines for DLP (Data Loss Prevention) and HIPAA compliance. Supposedly it can read HTTPS data clearly. I always thought that between the browser and the server, this was encrypted entirely. How can software sneak in and grab this data from the browser prior to it is encrypted or after it is decrypted? I am just curious as to how this could be possible. I would think that a browser wouldn't be considered very secure if this was possible.

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• Opening firewall to incoming port 443

  - by jrdioko

  I recently set up the ufw firewall on a Linux machine so that outgoing connections are allowed, incoming connections are denied, and denied connections are logged. This seems to work fine for most cases, but I see many denied connections that are incoming on port 443 (many with IPs associated with Facebook). I can open that port to incoming connections, but first wanted to ask what these could be. Shouldn't HTTPS requests be initiated by me and be treated as outbound, not inbound connections? Is it typical to open incoming port 443 on consumer firewalls?

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• Is RC4 128bit strong enough? [closed]

  - by al nik

  I notice that services like Gmail use RC4 128 bit as encryption. What is RC4 encryption? Is 128-bit RC4 strong enough by today's encryption standards?

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• How can I persist certificates in Java's cacerts?

  - by Alan Spark

  We need to have a certificate in Java's cacerts keystore for one of our servers that is authenticated by LDAP. We are using Ubuntu server. We have successfully done this by updating the cacerts file in /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/security but occasionally a Java update is installed and the cacerts file seems to be getting replaced by a default one that doesn't contain our changes. This doesn't happen very often but it is becoming a bit of a pain when it does happen. Is there a better way of adding things to cacerts so that they don't get lost when a Java update happens? Thanks, Alan

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• Exchange - inbound email only works from some servers

  - by Kryptonite

  I am having a problem where inbound mail from outside only works when sent from certain hosts. For example, when I send myself an email from my personal gmail account all is well, as the logs show: 2012-09-05 18:14:16 209.85.223.175 mail-ie0-f175.google.com SMTPSVC1 MAILSVR 192.168.1.79 0 EHLO 250 - - 2012-09-05 18:14:16 209.85.223.175 mail-ie0-f175.google.com SMTPSVC1 MAILSVR 192.168.1.79 0 STARTTLS 220 - - 2012-09-05 18:14:16 209.85.223.175 mail-ie0-f175.google.com SMTPSVC1 MAILSVR 192.168.1.79 0 STARTTLS 220 - - 2012-09-05 18:14:16 209.85.223.175 mail-ie0-f175.google.com SMTPSVC1 MAILSVR 192.168.1.79 0 EHLO 250 - - 2012-09-05 18:14:16 209.85.223.175 mail-ie0-f175.google.com SMTPSVC1 MAILSVR 192.168.1.79 0 MAIL 250 - - 2012-09-05 18:14:16 209.85.223.175 mail-ie0-f175.google.com SMTPSVC1 MAILSVR 192.168.1.79 0 RCPT 250 - - 2012-09-05 18:14:48 209.85.223.175 mail-ie0-f175.google.com SMTPSVC1 MAILSVR 192.168.1.79 0 QUIT 240 - - However, if I sent from my personal Yahoo account, I get this response: Sorry, we were unable to deliver your message to the following address. <[email protected]>: Remote host said: 530 5.7.0 Must issue a STARTTLS command first [MAIL_FROM] (NB: Nothing appeared in the smtp log for this message.) Any suggestions where to start looking? EDIT ---- I don't know if it matters, but the certificate I am using for TLS is self signed.

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• Encrypt client connection with squid forward proxy using SSL

  - by Twisted Whisper

  I'm setting up a Squid forward proxy and I'm wondering if I could configure Squid in such a way that the connection from my web browser to squid is https regardless of whether the connection from squid to the destination website is http or https. In other words, I want my connection from my web browser to my forward proxy to be encrypted even though I'm just surfing normal http website through that proxy. Can it be done?

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• How to generate new CSRs for TLS use in sendmail?

  - by Mikey B

  SendMail 8.13.8 | CentOS 5.x Hi Guys, I'm using ca-signed TLS certificates on my sendmail server and they are up for renewal soon. Our new CA doesn't like our old CSR so I need to generate a new CSR. Can someone point me to the procedure for doing this (without affecting the production certs that are already in use)? I'm paranoid of overwriting the old TLS certs in the process of generating a CSR. Most of the instructions I've found are for implementing self-signed TLS certs -- which isn't an option for me at this time. I'm thinking it would something like: openssl req -new -nodes -out new-tls.csr -keyout new-tls-private.key But I wasn't sure if I was missing some options there such as the -x509 option... -M

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• Deciding on SSLRandomSeed values in Apache 2.2

  - by sh-beta

  What rules of thumb should you follow when choosing SSLRandomSeed startup and connect values in Apache?

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• Using nginx as a reverse proxy for tomcat results in new jsessionids for every ssl request

  - by user439407

  I am using nginx as a reverse proxy for a tomcat setup, and everything works fine for the MOST part, the only issue I am having is that every request to an http address results in a new JSESSION ID being created(this doesn't happen in http), here is the relevant part of the NGINX configuration: location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-Proto https; proxy_redirect off; proxy_connect_timeout 240; proxy_send_timeout 240; proxy_read_timeout 240; proxy_pass http://localhost:8080; } Any idea why I am constantly genning new jsessionids?

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• IIS 6.0 mitigating BEAST

  - by D3l_Gato

  Recently, my PCI assessor informed me that my servers are vulnerable to BEAST and failed me. I did my homework and I want to change our webservers to prefer RC4 ciphers over CBC. I followed every guide I could find... I changed my reg keys for my weaker than 128bit encryption to Enabled = 0. completely removed the reg keys for the weaker encryptions. I downloaded IISCrypto and unchecked everything but RC4 128 ciphers and triple DES 168. My webserver still prefers AES-256SHA. Is there a trick in IIS 6.0 to get your webservers to prefer RC4 ciphers that I am not figuring out? It seems like in IIS 7 they made this very easy to fix but that doesn't help me now!

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• Need advise on linking apache and tomcat

  - by hsnm

  I have been searching this for hours with no luck. I have a web server that uses https on Apache2. I also have installed tomcat7 on the same server to run some Java webapp on it. I need to keep my https port 443 on Apache but forward the requests to the Java webapp to tomcat. I tried to use mod_jk to redirect the requests to tomcat but I failed. Most tutorials talk about redirecting plain http requests not https. I also could not let tomcat use https on 8443. I'm following the steps here but facing errors. The question: Can I redirect https traffic to tomcat without installing https on tomcat? Is there a good tutorial you can recommend to me?

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• Apache: serving SSL only

  - by elect

  I have a website that I want to be access only by https://myurl.com. A normal typing myurl.com should be forwarded to the https. I tried different things such as: RewriteEngine On RewriteCond %{SERVER_PORT} 80 RewriteRule ^(.*)$ https://myurl.com/$1 [R,L] (rewrite mod ON) or NameVirtualHost *:80 <VirtualHost *:80> ServerName mysite.example.com DocumentRoot /usr/local/apache2/htdocs Redirect permanent /secure https://mysite.example.com/secure </VirtualHost> But they didnt work, which is the right way to do it? Debian & Apache 2

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• Two virtual host one with Domain name one with internal ip#?

  - by Abhishek

  Is it possible to have two virtual host configurations for the same server - one with internal ip address and one with domain name? Something like <VirtualHost {{internal-ipaddress}}:80> ....... </VirtualHost> <VirtualHost {{domain-name}}:80> ....... </VirtualHost> Note that the internal IP address and the domain name belong to the same server or same server instance. I am asking this to restrict some URLs for external users, redirect to https all external access and allow everything for internal users(without https)..

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• Really remove non-permanent certificate exception in firefox

  - by user1719315

  I visited japan.indymedia.org and firefox gave me the "Invalid certificate" screen. I added an exception, but did not click "Store this exception permanently." But now firefox still happily visits the same site without giving any warnings, even after a restart of the browser. I tried going to the Options-Advanced-Encryption-View Certificates-Servers to remove the certificate but I did not find it there. How to remove this exception and make firefox give me the warning when visiting the site?

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• Apache Key: Which is it using?

  - by quindraco

  I'm running an Apache server on Ubuntu. When I restart it, it asks me for a pass phrase; here's what the dialog looks like: Apache/2.2.16 mod_ssl/2.2.16 (Pass Phrase Dialog) Some of your private key files are encrypted for security reasons. In order to read them you have to provide the pass phrases. Server 127.0.0.1:443 (RSA) Enter pass phrase: I've already worked out how to remove the pass phrase from the key file in question, but I can't find any information anywhere on how to determine which key file Apache is complaining about in the above dialog. I have dozens of key files on the server in question, although I don't know which ones are in active use (all I did is 'locate .pem' and ignore the false positives). Does anyone know how to track down which pem file I need to remove the passphrase from?

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• What and how strong is 128bit RC4? [closed]

  - by al nik

  I notice that services like Gmail use RC4 128 bit as encryption. What is RC4 encryption and how does it work? Is 128-bit RC4 considered strong encryption?

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• Conditional https redirect to http depending on URL? (Apache)

  - by Joel Marcey

  Right now I redirect 100% of the time if someone does https://mysite.com <VirtualHost *:443> ServerAdmin [email protected] ServerName mysite.com ServerAlias www.mysite.com RewriteEngine on RewriteRule (.*) http://%{HTTP_HOST} [L,R=permanent] <VirtualHost> However, now I want to conditionally redirect. If a user goes to https://mysite.com/abc/, then I want to use https; otherwise redirect. How do I do this? I tried reading the docs, but just couldn't find what I needed. I am using Apache on Ubuntu Linux.

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• Windows 2003 Server, can't connect to an SSL Site from IE.

  - by JL

  I am trying to connect to connect to www.czebox.cz using internet explorer on Windows 2003 server. If you have a server to test from please do, and you'll notice that it does not connect instead returns - Internet Explorer cannot display the webpage. From Firefox it works fine on the server. From Windows 7 it works fine in Internet Explorer. How can I get it to work in Windows 2003 Server using IE?

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