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3294 discussions

Stunnel supports ECC certificate?
by Bao, Robert 03 Jun '10

03 Jun '10

I searched the entire archive, couldn't find the answer/solution I am looking for. I have to post to this group, and appreciate any help/suggestion from any you. I use the latest 1.0.0 OpenSSL and 4.33 Stunnel. I used OpenSSL commands that very similar to what is described in the following link to create the ECC certificate and the private key file. http://src.opensolaris.org/source/xref/sfw/usr/src/lib/openssl/openssl-0 .9.8n/demos/ssltest-ecc/ECC-RSAcertgen.sh Start Stunnel, see the following errors: Key file: (actual path to the private key file)\HOST.KEY error stack: 140B3009 : error:140B3009:SSL routines:SSL_CTX_use_RSAPrivateKey_file:PEM lib SSL_CTX_use_RSAPrivateKey_file: 607907F: error:0607907F:digital envelope routines:EVP_PKEY_get1_RSA:expecting an rsa key There was a similar posting 4-5 years ago, and Mike answered it (the answer was: Stunnel didn't support ECC at that time). http://stunnel.mirt.net/pipermail/stunnel-users/2005-October/000817.html Seems like this is still true today. Then, when the ECC support will be added to Stunnel? If Stunnel already supports ECC certificate, how do I make it work? Thanks. Robert Bao Software House Tyco International 978-577-4202 Explore our new Tyco Online Learning Center Web-based Training Bundles at: www.swhouse.com/support/tyco_online_learning_center.aspx This e-mail may contain or have attached to it information or technology the export or re-export of which is restricted by U.S. laws and regulations. By viewing this e-mail and any attachments, the recipient agrees to the following: (i) the recipient's use of the contents of this e-mail and any attachments shall comply with all applicable laws, rules and regulations, including, without limitation, U.S. international trade laws and regulations, and (ii) the recipient may not transfer or otherwise export or re-export any information or technology contained in this e-mail or any attachment except in full compliance with the export controls administered by the U.S. and other countries and any applicable import and use restrictions.

1 0

deploy stunnel
by Arko-Quick, Patricia K 02 Jun '10

02 Jun '10

Is there a way to deploy stunnel to all users versus the current user logged in? I would like to deploy it with sms to all users of the machine.

1 0

Default for TIMEOUTidle?
by Markus Borst 27 May '10

27 May '10

I want to modify TIMEOUTidle in our configuration. To be sure to set it to sensible values, I need to know the default value, but I can't find it in the docs. Greetings Markus Borst -- TU Darmstadt Hochschulrechenzentrum (HRZ) Markus Borst Adresse: Petersentrasse 30, 64287 Darmstadt, Germany Tel.: 06151/16-2056 Email: M.Borst(a)hrz.tu-darmstadt.de

1 0

Transparent mode, alternative env.c
by Hans Werner Strube 25 May '10

25 May '10

The method for passing the remote address and port to an exec'ed program through getenv() calls in the preloaded libstunnel.so fails for programs that clean the environment initially. This can be circumvented placing getenv() in an _init() function and storing the results in static variables. Here is my alternative env.c (without the copyright and license), which I have been using for more than a year: * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /* getpeername() can't be declared in the following includes */ #define getpeername no_getpeername #include <sys/types.h> #include <sys/socket.h> /* for AF_INET */ #include <netinet/in.h> #include <arpa/inet.h> /* for inet_addr() */ #include <stdlib.h> /* for getenv() */ #ifdef __BEOS__ #include <be/bone/arpa/inet.h> /* for AF_INET */ #include <be/bone/sys/socket.h> /* for AF_INET */ #else #include <sys/socket.h> /* for AF_INET */ #endif #undef getpeername static uint32_t rem_host=0; static uint16_t rem_port=0; /* Requires shared-library linking by ld, not cc (except with gcc -nostdlib) */ void _init() { char *value; if((value=getenv("REMOTE_HOST")) && *value != '\0') rem_host = inet_addr(value); if((value=getenv("REMOTE_PORT")) && *value != '\0') rem_port = htons(atoi(value)); } int getpeername(int s, struct sockaddr_in *name, int *len) { char *value; name->sin_family = AF_INET; name->sin_addr.s_addr = rem_host; name->sin_port = rem_port; return 0; } /* End of env.c */

1 0

STRLEN in common.h may be too small
by Hans Werner Strube 25 May '10

25 May '10

In common.h of stunnel-4.x, the parameter STRLEN (used for many buffers) is set to 256. This is insufficient in some cases, e.g., the CAPABILITY response of an IMAP server or the pathname of a file may be too long, resulting in errors. If you encounter such cases (e.g., messages "Input line too long"), increase STRLEN, e.g., to 512.

1 0

Using stunnel to RDP into a SSL-enabled Windows box
by Daren Krive 11 May '10

11 May '10

Hi everyone, First of all I apologize if this has been asked before or if I am totally misunderstanding the purpose of stunnel altogether. If so please bear with my ignorance. I am an IT consultant and I manage about 20+ Windows-based servers. Some of these servers are accessible via VPN while others are accessible directly via RDP over the Internet. For those that are exposed to the net I am using the SSL certificate feature of Remote Desktop by going into “Terminal Services Configuration” and configuring the connection to use an SSL (most of the time a self-signed cert). I can connect to these machines no problem from Windows and I get a “lock” icon in my RDP client. However I cannot connect to these machines using rdestkop under Ubuntu. I have determined that if I turn off the requirement to use SSL on the server side (and instead allow the connection to use the built-in encryption of RDP) then I am able to connect with rdesktop. I would very much like to avoid rebooting just to connect to these servers. I am also not willing to remove the requirement for the SSL connection. Is there a way I can use stunnel on my Ubuntu box to first establish a secure SSL connection and then use rdesktop over that connection? I have searched high and low for info on this and found nothing. I have found instructions on how to use the Windows version of stunnel to secure RDP but that isn’t what I am trying to do. The server is already using an SSL cert to encrypt the connection (not sure how many people know Windows 2003 and up can do this). I am looking to get around the apparent lack of SSL support in rdesktop. Best regards, Daren.

3 3

running as a windows service
by Graham Chiu 10 May '10

10 May '10

I downloaded and ran the windows binary 4.33. When I use the stunnel.pem it runs fine as a service. I created my own pem ( using Openssl on OpenSolaris ) and it won't run now as a service. I get a timeout message. If I then uninstall it as a service, and run it as an application, it works. Ideas on getting to run as a service with my pem? The log says nothing of note. -- Graham Chiu

2 1

Safari SSL Problems
by Rene Plattner 05 May '10

05 May '10

Hi, has anyone Problems with Safari? I habe Problems with Safari 3 + 4 on Windows with stunnel Version 4.27 + 4.33 Everytime if I want to connect to an SSL terminated (stunnel) webservice, Safari asks for an client certificate, allthough I set the option verify to default (=none). Kind regards, René Plattner -- -------------------------------------------------------------- Dipl.-Ing. René Plattner Zentraler Informatikdienst (Central IT-Services) Universität Innsbruck Technikerstrasse 23 Tel: ++43512/507-2360 6020 Innsbruck Fax: ++43512/507-2944 Austria E-Mail: rene.plattner(a)uibk.ac.at Homepage: http://www.uibk.ac.at/zid -------------------------------------------------------------- D92E 1AE3 A8AA 9A57 8E5B 9204 F5D0 95DB 4030 742D http://homepage.uibk.ac.at/~c1021058/keys/0x4030742D.pub --------------------------------------------------------------

1 0

zlib error in build for W32
by J F 04 May '10

04 May '10

Hi, I'm trying to build from source stunnel-4.33 for W32 in a machine with Debian lenny following the guidelines provided in INSTALL.W32. First I received complains from the compiler about zlib.h not found. Then I copied the zlib headers from /usr/include in include directory under openssl tree. Now openssl 1.0 compiles smoothly but when I try to compile stunnel I received the following error: i586-mingw32msvc-gcc -s -o stunnel.exe file.obj client.obj log.obj options.obj protocol.obj network.obj resolver.obj ssl.obj ctx.obj verify.obj sthreads.obj stunnel.obj gui.obj resources.obj -L/usr/src/openssl-1.0.0 -lzdll -lcrypto.dll -lssl.dll -lws2_32 -lgdi32 -mwindows /usr/lib/gcc/i586-mingw32msvc/4.2.1-sjlj/../../../../i586-mingw32msvc/bin/ld: cannot find -lzdll collect2: ld returned 1 exit status make: *** [stunnel.exe] Error 1 Am I doing some basic mistake? JF

2 1

How to start windows service with realtime priority?
by Ryan Dunn 20 Apr '10

20 Apr '10

I've been trying to figure out how to start the stunnel service on windows with a realtime priority, and so far, all attempts have failed. I've tried setting the ImagePath to 'start /realtime "C:\Program Files\stunnel\stunnel.exe" -service -install' and inserting that into a bat file and calling that instead, but that didn't work either. Does anyone know how to specify the startup priority of a windows service? Is that something that the program would need to support? Thanks, Ryan

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