Hi all, great, i'm just searching for this. Jason can you kindly post the whole squid.conf? Thanks V
2016-03-20 22:29 GMT+01:00 Jason Haar <jason_h...@trimble.com>: > Hi there > > I'm wanting to use tls intercept to just log (well OK, and potentially > block) HTTPS sites based on hostnames (from SNI), but have had problems > even in peek-and-splice mode. So I'm willing to compromise and instead just > intercept that traffic, log it, block on IP addresses if need be, and don't > use ssl-bump beyond that. > > So far the following seems to work perfectly, can someone confirm this is > "supported" - ie that I'm not relying on some bug that might get fixed > later? ;-) > > sslcrtd_program /usr/lib64/squid/ssl_crtd -s /var/lib/squid/ssl_db -M 256MB > sslcrtd_children 32 startup=15 idle=5 > acl SSL_https port 443 > ssl_bump splice SSL_https > acl BlacklistedHTTPSsites dstdomain > "/etc/squid/acl-BlacklistedHTTPSsites.txt" > http_access deny BlacklistedHTTPSsites > > The "bug" comment comes down to how acl seems to work. I half-expected the > above not to work - but it does. It would appear squid will treat an > intercept's dst IP as the "dns name" as that's all it's got - so > "dstdomain" works fine for both CONNECT and intercept IFF the acl contains > IP addresses > > I was hoping I wouldn't need ssl-bump at all, but you need squid to be > running a https_port, and for it to support "intercept", and to do that > squid insists on "ssl-bump" too - although that seems likely was a > programmer assumption that didn't include people like me doing mad things > like this? :-). I'd also guess I don't need 32 children/etc - 1 would > suffice as it's never used? > > So the end result is that all CONNECT and/or intercept SSL/TLS traffic is > supported via the proxy, with all TLS security decisions residing on the > client. I get my logs, and if I want to block some known bad IP address, I > can: CONNECT causes a 403 HTTP error page and intercept basically ditches > the tcp/443 connection - which is as good as it gets without getting into > the wonderful world of real "bump" > > -- > Cheers > > Jason Haar > Information Security Manager, Trimble Navigation Ltd. > Phone: +1 408 481 8171 > PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1 > > _______________________________________________ > squid-users mailing list > squid-users@lists.squid-cache.org > http://lists.squid-cache.org/listinfo/squid-users > > -- > Vito A. Smaldino > >
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