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Re: Splice certain SNIs which served by the same IP

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Hi Ben,

When HTTP/2 is used, requests for two different domains may served using the same TLS connection if both domains are served from the same remote server and use the same TLS certificate.
There is a description here:
   https://daniel.haxx.se/blog/2016/08/18/http2-connection-coalescing/

And a similar problem report here:
   https://bugs.chromium.org/p/chromium/issues/detail?id=1176673

Regards,
   Christos


On 14/2/22 3:49 μ.μ., Ben Goz wrote:
By the help of God.

Hi,
Ny squid version is 4.15, using it on tproxy configuration.

I'm using ssl bump to intercept https connection, but I want to splice several domains. I have a problem that when I'm splicing some google domains eg. youtube.com <http://youtube.com> then
gmail.com <http://gmail.com> domain also spliced.

I know that it is very common for google servers to host multiple domains on single server. And I suspect that when I'm splicing for example youtube.com <http://youtube.com> it'll also splices google.com <http://google.com>.

  Here are my squid configurations for the ssl bump:

https_port xxxx ssl-bump tproxy generate-host-certificates=on options=ALL dynamic_cert_mem_cache_size=4MB cert=/usr/local/squid/etc/ssl_cert/myCA.pem dhparams=/usr/local/squid/etc/dhparam.pem sslflags=NO_DEFAULT_CA

acl DiscoverSNIHost at_step SslBump1

acl NoSSLIntercept ssl::server_name  "/usr/local/squid/etc/url-no-bump"
acl NoSSLInterceptRegexp ssl::server_name_regex -i "/usr/local/squid/etc/url-no-bump-regexp"
ssl_bump splice NoSSLInterceptRegexp_always
ssl_bump splice NoSSLIntercept
ssl_bump splice NoSSLInterceptRegexp
ssl_bump peek DiscoverSNIHost
ssl_bump bump all


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