- stunnel-users - stunnel.org

server reads ecrypted data on connect ?
by Nikolaj G. 10 Dec '07

10 Dec '07

Hello stunnel'ers, First of all - im a newbie into openssl and stunnel. Im trying to stunnel between my own java socket server and client. The stunnel is established, but the server reads encrypted data on connect. Since I dont send anything, Im surprised to see encrypted data in the server log. Could someone please help. Ive managed to create a root certificate, a request and signing it, using: http://www.eclectica.ca/howto/ssl-cert-howto.php Thanks in advance. /nikolaj PS see configuration below: ----------------------------------------------- Packages (Fedora Core 6): openssl-devel-0.9.8b-15.fc6 openssl-0.9.8b-15.fc6 stunnel-4.15-2 ----------------------------------------------- The SERVER stunnel.conf: ; Certificate/key is needed in server mode CAfile = /root/ssl/cacert.pem cert = /root/ssl/key-cert.pem pid = /root/ssl/stunnel.pid ; Some debugging stuff useful for troubleshooting debug = 7 foreground=yes #setuid = stunnel #setgid = stunnel [mystunnel] accept = ratata.cirque.dk:998 connect = 127.0.0.1:8200 ----------------------------------------------- The CLIENT stunnel.conf: ; Certificate/key is needed in server mode CAfile = /root/ssl/eclectica/cacert.pem pid = /root/ssl/eclectica/stunnel.pid ; Some debugging stuff useful for troubleshooting debug = 7 foreground=yes ; enable client mode client = yes [mystunnel] accept = 127.0.0.1:998 connect = ratata.cirque.dk:8200 ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

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HTTPS hardcoded redirects
by Ezio Ostorero 10 Dec '07

10 Dec '07

All, I have a problem similar to the one described in http://mirt.net/pipermail/stunnel-users/2006-October/001324.html i.e. I ***wish*** to use the recording functionalities of JMeter while accessing an apache-SSL-secured Tomcat web server. JMeter does not allow recording on SSL so I have to ... un-cipher my HTTPS sessions, stunnel looks like the right choice. Being an stunnel newbie, I started here: http://www.stunnel.org/examples/https_client.html , this HOWTO looks quite close to my configuration. We have a plain-vanilla tomcat server behind an apache/SSL, and I want to access this web application from an HTTP-only browser. So, I configure stunnel as a "client", I run it on my PC, with the following configuration: [psuedo-https] accept = 8080 connect = <server>:443 TIMEOUTclose = 0 I read it as follows: stunnel talk cleartext HTTP on the local 8080 port and forwards in crypted HTTPS on the <server> port 443 I set the URL in my browser to http://localhost:8080/oi/ and this happens: 1) Ethereal sez that my PC and <server> start an SSLv3 conversation, good, we're on track 2) I have an HTTP analyzer plugged in my browser that shows me the content of the first GET that is a redirect to an SSO server (on the same <server>:443 port) for user authentication https://<server>/ssoserver/login?service=...... 3) My browser then issue a GET to https://<server>/ssoserver/login?service=...... and is GAME OVER, my beloved stunnel is cleanly bypassed by the hardcoded https://<server>/ string Any suggestion? Is it a dead end? Any dirty trick I could play with? Such as running multiple stunnel instances, setting <server> = localhost in my hosts file etc.? Thanks, Ezio -- Ezio Ostorero, Catania Seltz e limone col sale. Arriminatu, non annacatu

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Re: [stunnel-users] Problem compiling win32 stunnel.exe v 4.21
by butterspoon＠gmail.com 10 Dec '07

10 Dec '07

On 09/12/2007, Luis Rodrigo Gallardo Cruz <rodrigo(a)nul-unu.com> wrote: > On Sun, Dec 09, 2007 at 11:30:01PM +0000, Hidden wrote: > > Okay, so I'm trying to build stunnel.exe (ver 4.21) under Debian Linux > > 2.6.22.1 as a prelude to applying some patches and I'm getting > > stuck. > > Just to make sure I understand: You are trying to build *for* windows > *in* Debian. Yup, just like the documentation (INSTALL.W32) says: 1) install mingw32 cross-compiler o a Unix/Linux machine (native compilation on a Windows machine is possible, but not supported) [...] 5) type "make stunnel.exe" > You seem to be mixing up (the names of) unix libs with windows ones. Well, something is. I'm just doing it by the book! > Anyways, would it not be easier to compile in windows? Anyone else here build stunnel.exe? What did you use? T

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Problem compiling win32 stunnel.exe v 4.21
by Hidden 09 Dec '07

09 Dec '07

Okay, so I'm trying to build stunnel.exe (ver 4.21) under Debian Linux 2.6.22.1 as a prelude to applying some patches and I'm getting stuck. I've followed the instructions in the makefile – Install mingw32; compile and install openssl; unpack and make stunnel.exe. mingw makes a bunch of object files for a while, but then at the link stage it bombs with i586-mingw32msvc/bin/ld: cannot find -lzdll make was when trying to execute the command: 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-0.9.8g -lzdll -leay32 -lssl32 -lws2_32 -lgdi32 -mwindows eay32 is nowhere to be found either. It and ssl32 are clearly related to openssl, but I can't see any suitable files in either the openssl build directory (/usr/src/openssl-0.9.8g as advertised). zdll could be something to do with zlib (which I have, ver 1.2.3) and eay32 and ssl32 are obviously related to openssl, but the only libraries under openssl are libssl.a and libcrypto.a (although optimistically trying to bolt in libssl in place of ssl32 doesn't work). ws2_32 and gdi32 are windows sockets and GDI, for what it's worth. I can't find the required libs on the internet anywhere, and maybe it's all down to me being a novice with mingw. I do notice the tantalizingly named files zlib1.dll, libeay32.dll, and libssl32.dll in the precompiled Windows binary distribution of stunnel, but surely I can't use them in any way? I'd love some help from anyone who knows this system better! Thanks, Tony

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SSL session caching with multiple clients through stunnel to an https server
by Paul McGarry 06 Dec '07

06 Dec '07

Hi there, I have an application where apache/php processes make SOAP requests over https to a single remote server (which is IIS I think). I am trying to cut down the time each request takes. In it's current configuration I think some time will be wasted as the php client and IIS server handshake to set up a new SSL connection for each request, thereby adding (at least) twice the network latency between the two servers to each request. (As far as I can tell there is no way to make php SOAP use some kind of persistant connection or SSL cache when talking to the server) I am wondering if I pushed the soap requests as http through stunnel whether stunnel would be more efficient with SSL connections or whether it will just create a new tunnel with a new ssl session for each request it receives? Does anyone have any advice? Paul

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MS Outlook verify = 2 using problem
by FFT` 05 Dec '07

05 Dec '07

Good Day! I'm using Stunnel 4.21 on i686-pc-linux-gnu with OpenSSL 0.9.8g 19 Oct 2007 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 with OpenSSL 0.9.8g 19 Oct 2007 on Fedora-like Linux server. stunnel.conf consists: _______________________________________________________________________________ cert = /usr/local/etc/stunnel/server.crt key = /usr/local/etc/stunnel/server.pem ; Protocol version (all, SSLv2, SSLv3, TLSv1) ;sslVersion = SSLv3 ; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /usr/local/var/stunnel/ setuid = nobody setgid = nobody ; PID is created inside chroot jail pid = /stunnel.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ; Authentication stuff verify = 2 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail ;CApath =/usr/local/etc/stunnel/certs ; It's often easier to use CAfile CAfile = /usr/local/etc/stunnel/ca.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /usr/local/etc/stunnel/crl.pem ; Some debugging stuff useful for troubleshooting debug = 7 output = stunnel.log ; Service-level configuration [pop3s] accept = 995 connect = 110 ________________________________________________________________________ PKI consists: ROOT_CA CA MAIL_CON_CA SERVER CLIENT server.crt - Server certificate in PEM Format; server.pem - Server key in PEM Format with nopassword ca.pem - ROOT_CA, CA, MAIL_CON_CA certificates in PEM format. When I am using MS Outlook mail Client , there are some PROBLEM with connections to SERVER:995 stunnel.log consists: ______________________________________________ 2007.12.05 14:57:39 LOG5[16668:1074107776]: stunnel 4.21 on i686-pc-linux-gnu with OpenSSL 0.9.8g 19 Oct 2007 2007.12.05 14:57:39 LOG5[16668:1074107776]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 2007.12.05 14:57:39 LOG6[16668:1074107776]: file ulimit = 1024 (can be changed with 'ulimit -n') 2007.12.05 14:57:39 LOG6[16668:1074107776]: poll() used - no FD_SETSIZE limit for file descriptors 2007.12.05 14:57:39 LOG5[16668:1074107776]: 500 clients allowed 2007.12.05 14:57:39 LOG7[16668:1074107776]: FD 6 in non-blocking mode 2007.12.05 14:57:39 LOG7[16668:1074107776]: FD 8 in non-blocking mode 2007.12.05 14:57:39 LOG7[16668:1074107776]: FD 9 in non-blocking mode 2007.12.05 14:57:39 LOG7[16668:1074107776]: SO_REUSEADDR option set on accept socket 2007.12.05 14:57:39 LOG7[16668:1074107776]: pop3s bound to 0.0.0.0:995 2007.12.05 14:57:39 LOG7[16669:1074107776]: Created pid file /stunnel.pid 2007.12.05 14:57:48 LOG7[16669:1074107776]: pop3s accepted FD=10 from 192.168.1.205:2129 2007.12.05 14:57:48 LOG7[16669:1074228016]: pop3s started 2007.12.05 14:57:48 LOG7[16669:1074228016]: FD 10 in non-blocking mode 2007.12.05 14:57:48 LOG7[16669:1074228016]: TCP_NODELAY option set on local socket 2007.12.05 14:57:48 LOG5[16669:1074228016]: pop3s accepted connection from 192.168.1.205:2129 2007.12.05 14:57:48 LOG7[16669:1074228016]: SSL state (accept): before/accept initialization 2007.12.05 14:57:48 LOG7[16669:1074228016]: SSL state (accept): SSLv3 read client hello A 2007.12.05 14:57:48 LOG7[16669:1074228016]: SSL state (accept): SSLv3 write server hello A 2007.12.05 14:57:48 LOG7[16669:1074228016]: SSL state (accept): SSLv3 write certificate A 2007.12.05 14:57:48 LOG7[16669:1074228016]: SSL state (accept): SSLv3 write certificate request A 2007.12.05 14:57:48 LOG7[16669:1074228016]: SSL state (accept): SSLv3 flush data 2007.12.05 14:57:48 LOG7[16669:1074228016]: SSL alert (write): fatal: handshake failure 2007.12.05 14:57:48 LOG3[16669:1074228016]: SSL_accept: 140890C7: error:140890C7:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:peer did not return a certificate 2007.12.05 14:57:48 LOG5[16669:1074228016]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2007.12.05 14:57:48 LOG7[16669:1074228016]: pop3s finished (0 left) ______________________________________________ I load all Server, CA , and client certificate in SYSTEM, but there is NO Connection. Please help Me with Stunnel and Outlook using.

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(no subject)
by Harmon, Paul 02 Dec '07

02 Dec '07

Ok Guys, I hate to be a nuisance. But I encountered an error coming out o the Stunnel configuration in LINUX. First what does it mean when Stunnel is in INETD mode? Does this imply certain configuration restrictions and why? Thanks, Paul Harmon

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Help using Stunnel-4.XX
by Harmon, Paul 30 Nov '07

30 Nov '07

Hi Folks, Well I know a little more now than before. The version of Stunnel I'm using is Stunnel 4.05 running under Fedora 7.0. I am trying to setup a test scenario at the moment where I am running a stream socket between a client and a server, both mine since this is a test scenario. I need thisese programs to connect over a secure socket and the exchange of data is a custom application. I've read through Barry O'donovan's article and that seems to give me the information on how to configure and use Stunnel on the server side. It is not clear to me yet, what I need to do to the client side. Is there anyone out there who has done this type of thing and could give me some help? Thanks in advance, Paul Harmon

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Problem with stunnel 4.20 on Fedora 7
by Andrew M Dunn 30 Nov '07

30 Nov '07

[Oh wise list folks... I haven't seen any responses to this. Does anybody have any experience either with using stunnel on Fedora 7, or with the particular error? I cannot find any other hints or reasons as to why the resolution is failing... Andy] ----original message------ I can't get stunnel to run on a freshly-installed Fedora 7 system. It fails with "Error resolving '0.0.0.0': servname is not supported for ai_socktype" but the usual other causes of that error (ie. ports not defined in /etc/services, bad settings in /etc/nsswitch.conf) are not the culprit this time. COMMAND LINE: /usr/sbin/stunnel /home/amdunn/security/stunnel.conf COMMAND OUTPUT: 2007.08.29 11:44:12 LOG3[13614:3086243520]: Error resolving '0.0.0.0': servname is not supported for ai_socktype (EAI_SERVICE) file /home/amdunn/security/stunnel.conf line 10: Failed to resolve accepting address STUNNEL.CONF FILE: ; ; stunnel file for testing 443 access to local http server ; cert=/home/amdunn/security/xxxxxxx key=/home/amdunn/security/yyyyyyy foreground=yes ; ; [sweb] accept=443 ; https port connect=80 ; standard httpd listening port TIMEOUTclose=0 ; must set this or IE waits 60sec on page end client=no STUNNEL -VERSION OUTPUT: stunnel 4.20 on i686-redhat-linux-gnu with OpenSSL 0.9.8b 04 May 2006 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP Global options debug = 5 pid = /var/run/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /etc/stunnel/stunnel.pem ciphers = ALL:!ADH:+RC4:@STRENGTH key = /etc/stunnel/stunnel.pem session = 300 seconds sslVersion = SSLv3 for client, all for server TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none

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zlib compression not working
by webmaster＠escoltesiguies.cat 29 Nov '07

29 Nov '07

I have configured both windows client and linux server (samba) with zlib compression: compression = zlib But I have transferred a txt file of 100Mb in 40 minutes and the same file compressed with gzip (22Mb) in 14 minutes. So I thing compression is not working. Client log tells: Compression enabled using zlib method and server log: Compression enabled using zlib method How can I verify comression is working? maybe compression is working but it is poor?

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