On 2/16/21 2:29 AM, Kevin Shell wrote: > What requirements are needed for smtps imaps pop3s nntps client programs > to tunnel thru squid proxy? If your Squid is a forward proxy, then those clients have to support HTTP (and/or HTTPS) forward proxies. In other words, they should establish a standard HTTP CONNECT tunnel through Squid. If you are intercepting their traffic, then there are no special requirements for those clients. You will have to configure Squid to splice the intercepted connection before getting to unencrypted bytes so your Squid will be limited to very basic checks at or below the TLS layer. HTH, Alex. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users