On Tue, Jul 24, 2018 at 10:27:12AM +0000, Hari wrote:
Hi Eric,
I run my application with stunnel in the client mode (client = yes in config file) . I do not have control on the stunnel running in server mode though.
If i understand your mail correctly, the hack is to copy the certs to any local directory that should be accessible and then delete the same after the connection is established? I dont have problems maintaining the pem files if i can access the file system to create them, but i am exploring an option, which i couldnt figure out from the stunnel documentation, if i can specify the certs inside the configuration file for stunnel itself rather than feeding them through a file. I have an environment where the certificates and keys are available as strings to my applications and hence the idea is to use them directly in stunnel config rather than as a file.
AFAIK, stunnel does not have such an option; it always reads the certificates from a file. Writing them out to files in a temporary directory might suit your needs. If your application needs stunnel only for a single connection and it runs on a Unix system, you don't even need to run it in inetd mode as suggested by Eric; write out the files, write out a config file with "foreground = yes", then start stunnel as a child process of your application; you may even kill it when your connection is done.
G'luck, Peter
On Tuesday, July 24, 2018, 4:20:32 AM GMT+5:30, Eric S Eberhard <flash@vicsmba.com> wrote:Use stunnel in inetd mode. Execute a script (or better C program). Copy the certificates for making the stunnel connection to a directory that is OK … then delete them immediately after stunnel starts. Hack – but might be OK for what you are doing.
I am not sure why anyone would think it more secure to put the keys into the stunnel command than to just use them from a file … but I likely do not know enough about your application to make a judgement.
Eric
Eric S Eberhard
VICS (Vertical Integrated Computer Systems)
Voice: 928 567 3529
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From: stunnel-users [mailto:stunnel-users-bounces@stunnel.org] On Behalf Of Hari Sent: Thursday, July 19, 2018 4:42 AM To: stunnel-users@stunnel.org Subject: [stunnel-users] Is there a way to specify certificate content in stunnel config
Hi,
I have a requirement where in i cannot specify the certificate and/or private key details as "files" to stunnel configuration, owing to the location and/or file system availability for stunnel to access them.
Is there a way to specify the actual certificate content in stunnel configuration (similar to other parameters like port numbers etc.,) so that the same can be leveraged.
Thanks
Hari
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