Can we try to understand the issue again? In this setup, should squid know about the client certificate and pass it to the service backend Or maybe just terminate the clients certificate? I am not sure I understood what you need/want to do with squid. Eliezer ---- Eliezer Croitoru Tech Support Mobile: +972-5-28704261 Email: ngtech1ltd@xxxxxxxxx Zoom: Coming soon From: Sergey Maslyakov <evolvah@xxxxxxxxx>
Sent: Friday, January 15, 2021 1:38 AM
To: Eliezer Croitoru <ngtech1ltd@xxxxxxxxx>
Cc: squid-users@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: Mutual TLS for the upstream example Thank you, Eliezer! I will look into it but it appears that the underlying problem is not solvable by design of the mTLS handshake... There are corner cases that can be solved but not the original issue. I don’t know about Squid but I assume varnish has this feature: https://docs.varnish-software.com/varnish-cache-plus/features/backend-ssl/ If you just need a GW without caching it should work as expected. Eliezer ---- Eliezer Croitoru Tech Support Mobile: +972-5-28704261 Email: ngtech1ltd@xxxxxxxxx Zoom: Coming soon Is the CONNECT tunnel designed in a way that enables it to "enrich" the outgoing connection with mTLS authentication? "tls_outgoing_options" does not seem to work the way I was hoping it does. My destination server requires mTLS authentication of the client. I have a valid key-cert pair and I can successfully execute a "curl" command to fetch a document from that server using the key-cert pair at hand. I want to put Squid between my clients (Maven, Gradle, Docker Engine, etc) and the server so that clients would be configured to use the instance of Squid as an HTTPS proxy but would not have to be configured with the mTLS key-cert pair. Maven --- (HTTPS/CONNECT) ---> Squid (stores my mTLS key-cert pair) --- (mTLS/SSL) ---> Server Is this doable within Squid architecture? I got it working using NGINX with some minor hiccups and I was hoping I can do it more elegantly with Squid.
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