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Re: ssl-bump works, but leads to many client errors being logged (NONE_NONE/200)

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Am 14.12.24 um 17:26 schrieb R:
My current goal is to set up a caching instance for https static content with squid 6.12.

ssl-bump is set up according to https://wiki.squid-cache.org/Features/SslBump and it works fine, at least from the clients' perspectives and without any noticeable issues (e.g. with Firefox or Safari). Sometimes (~5-8% of the total requests) I can even get a few cache hits - including those juicy TCP_MEM_HIT/200s.

What has been bothering me though is the impressive amount of client request errors being logged:

# a few seconds after an instance restart
openvpn-client2:/$ squidclient cache_object://localhost/counters | grep client_http.errors
client_http.errors = 8
openvpn-client2:/$ squidclient cache_object://localhost/counters | grep client_http.errors
client_http.errors = 20

In the access_log, it is possible to see many NONE_NONE/200 being logged for ​**almost every https request**. The amount of logged NONE_NONE/200 seem to vary according to the target website: github.com:443 throws 6-7 errors, while the lists.squid-cache.org throws only one.

When using ssl-bump, you must allow the initial CONNECT request and then decide on the broken up requests. E.g. add
http_access allow CONNECT
before your first http_access line.

Amon Ott
--
Dr. Amon Ott
m-privacy GmbH           Tel: +49 30 24342334
Werner-Voß-Damm 62       Fax: +49 30 99296856
12101 Berlin             http://www.m-privacy.de

Amtsgericht Charlottenburg, HRB 84946

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 Roman Maczkowsky

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