Thank you for reply. I tryied it but it doesn't work because my client run some separated subprocesses and are them that contact the server so, if an extern process try to connect to 127.0.0.1:<the_found_port> while one of that subprocess has finished and the next is not yet started, it will be able to do it and also my subprocess will be pending (i tryed it). Hope i was able to explain the situation. Any suggestion? Thanks in advace

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Message: 1 Date: Wed, 9 Jul 2008 13:26:03 +0200 (CEST) From: "Pietro Di Primo" <pietro.diprimo@ct.infn.it> Subject: [stunnel-users] client-server tunnelling To: stunnel-users@mirt.net Message-ID: <2553.193.206.208.201.1215602763.squirrel@imapfis.ct.infn.it> Content-Type: text/plain;charset=utf-8

Hi, I have a client server application, and want to tunnel it in this way: a script select a free port in a random way, write the stunnel.conf file. with "accept=<the_found_port>" and "connect=<my_server>" and run my client application passing to 127.0.0.1:<the_found_port> as server address. The problem is that i need to be sure that no other client or user can access <the_found_port> while the application is running. I guess that it should be possible to do it, but i wasn't able to.

Can anybody help me?

Thanks

-- ---

Ing. Pietro Di Primo INFN - Istituto Nazionale di Fisica Nucleare Grid Computing Research Area Via S. Sofia 78 95123 CATANIA (Italy) Voice : +39 095 378-5446/5517 Fax. : +39 095 378 5518 Mobile : +39 320 8591527 E-mail : pietro.diprimo@ct.infn.it Skype : pietrodiprimo

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Message: 2 Date: Wed, 9 Jul 2008 14:08:23 +0200 From: Micha? Trojnara <Michal.Trojnara@mobi-com.net> Subject: Re: [stunnel-users] client-server tunnelling To: stunnel-users@mirt.net Message-ID: <6ba9f1b703149916bb1a61fb68a1e377@mirt.net> Content-Type: text/plain; charset="UTF-8"

Pietro Di Primo wrote:

...

Hi, I have a client server application, and want to tunnel it in this way: a script select a free port in a random way, write the stunnel.conf file. with "accept=<the_found_port>" and "connect=<my_server>" and run my client application passing to 127.0.0.1:<the_found_port> as server address. The problem is that i need to be sure that no other client or user can access <the_found_port> while the application is running. I guess that it should be possible to do it, but i wasn't able to.

Simply bind the specific network interface with: accept=127.0.0.1:<the_found_port>

Best regards, Mike

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-- --- Ing. Pietro Di Primo INFN - Istituto Nazionale di Fisica Nucleare Grid Computing Research Area Via S. Sofia 78 95123 CATANIA (Italy) Voice : +39 095 378-5446/5517 Fax. : +39 095 378 5518 Mobile : +39 320 8591527 E-mail : pietro.diprimo@ct.infn.it Skype : pietrodiprimo