[squid-users] Squid ssl_bump always makes outbound connection

Eric Lackey EricL at daveramsey.com
Sat Aug 25 14:35:32 UTC 2018

Using squid-4.2-1.el7.x86_64

I'm looking at ways to optimize Squid when using ssl_bump. We use the peek & splice approach now and it works pretty well.

While running some tests, I noticed that Squid always makes an outbound connection to the remote server regardless of when I terminate the connection. I'm trying to build a configuration that denies traffic immediately if the client SNI header doesn't match without making a connection to the remote host.

Here is a very simple configuration that should terminate all connections after step1. The connection is terminated, but by running a tcpdump at the same time, I see that Squid still makes an outbound connection.

acl step1 at_step SslBump1
ssl_bump terminate step1

I would expect that if I terminate after step1, the connection to the remote server should never be made. Can anyone help me understand why Squid would still make the outbound connection in this instance?
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