My Squid Reverse Proxy only accepts HTTPS requests. What is a short way to redirect/rewrite a HTTP-request to https? So if the user visits http://foo.server.com he should be automatically redirected to https://foo.server.com

1 Answer 1


One way is to get the origin server to do the redirect, but it seems more efficient to get Squid to do it. There are a couple of approaches, but using deny_info seems the easiest.

In the squid.conf configuration file:

acl PORT80 myport 80
acl MYSITE dstdomain foo.server.com
http_access deny PORT80 MYSITE
deny_info 301:https://foo.server.com%R MYSITE

At first glance, the http_access statement just denies access to the HTTP version of your site. However due to the deny_info statement Squid will redirect users to an alternative site (in this case the HTTPS version) rather than simply giving an access-denied message.

The %R tag causes the request URL path to be included in the redirect, so that if users try to visit http://foo.server.com/bar then they'll get directed to https://foo.server.com/bar, rather than just https://foo.server.com.

The full list of URL format tags is available in the Squid documentation: http://www.squid-cache.org/Doc/config/deny_info/

The order of the acl statements is important because Squid only remembers the last http_access deny and looks for the deny_info to match that acl.

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    Is there a way for Squid to automatically upgrade the connection to https and forward it, so the client doesn't know or care that http is blocked? Feb 20, 2020 at 10:08

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