On 5/6/20 10:45 AM, Akshay Hegde wrote:

> Can you share some link or details about below

Sorry, I cannot -- it has been many years since I worked on browser
plugins, and I have heard that there were significant changes in
APIs/rights since then. Perhaps others on the mailing list can help you.
If not, most of the related information should be publicly available.

Alex.

>> There are other ways to police
> traffic (e.g., browser plugins), but they all require fiddling with the
> client environment.
> 
> On Wed, May 6, 2020, 7:56 PM Alex Rousskov wrote:
> 
>     On 5/6/20 8:58 AM, Akshay Hegde wrote:
> 
>     > 1. Is there any way to filter HTTPS URLs without importing CA
>     > certificates on client side?
> 
>     No, there is no way for a proxy to look at request URLs without the
>     browser trusting the proxy certificate. There are other ways to police
>     traffic (e.g., browser plugins), but they all require fiddling with the
>     client environment.
> 
> 
>     > 2. for 16GB RAM, 4 core CPU, 8GB Swap, expected to have 10GB
>     cache,  how
>     > to calculate configurations parameters, is there any thumb rule ?
> 
>     I believe there is some related advice on Squid wiki:
>     https://wiki.squid-cache.org/SquidFaq/SquidMemory
> 
>     HTH,
> 
>     Alex.
> 
> 
>     > # config
>     > cache_mgr webmaster
>     > cache deny QUERY
>     > cache_mem 256 MB
>     > cache_swap_low 90
>     > cache_swap_high 95
>     > maximum_object_size 4 MB
>     > minimum_object_size 0 KB
>     > maximum_object_size_in_memory 512 kB
>     > ipcache_size 2048
>     > ipcache_low 90
>     > ipcache_high 95
>     > fqdncache_size 1024
>     > cache_replacement_policy lru
>     > memory_replacement_policy lru
>     > cache_dir ufs /var/spool/squid 10000 16 256
>     > cache_effective_user squid
>     > cache_effective_group squid
>     > cache_log /var/log/squid/cache.log
>     > cache_store_log /var/log/squid/store.log
>     > memory_pools on
>     > memory_pools_limit 5 MB
>     >
>     > # SSL-Bump -working but not feasible.
>     > http_port 3128 ssl-bump cert=/etc/squid/sslcert/proxyCA.pem
>     > generate-host-certificates=on dynamic_cert_mem_cache_size=4MB
>     > sslcrtd_program /usr/lib64/squid/security_file_certgen -s
>     >  /var/spool/squid/ssl_db -M 4MB
>     > sslcrtd_children 5
>     > acl step1 at_step SslBump1
>     > ssl_bump peek step1
>     > ssl_bump bump all
>     >
>     > ------------------------------------ My New Environment
>     --------------------
>     > # squid -v
>     > Squid Cache: Version 4.4
>     > Service Name: squid
>     >
>     > # cat /etc/redhat-release
>     > CentOS Linux release 8.1.1911 (Core)
>     >
>     >
>     > # Tested ACLs
>     > logformat test_log %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %>ru %[un
>     > %Sh/%<a %mt
>     > acl test_sites dstdomain "/etc/squid/acls/test_sites.acl"
>     > access_log /var/log/squid/test_site.log test_log test_sites
>     >
>     > # tail -f /var/log/squid/test_site.log
>     > 1588678050.178   3247 10.0.2.15 TCP_TUNNEL/200 28073 CONNECT
>     > nav.sciencedirect.com:443 <http://nav.sciencedirect.com:443>
>     <http://nav.sciencedirect.com:443> akshay
>     > HIER_DIRECT/91.235.133.74 <http://91.235.133.74>
>     <http://91.235.133.74> -
>     > 1588678050.189   3942 10.0.2.15 TCP_TUNNEL/200 24000 CONNECT
>     > nav.sciencedirect.com:443 <http://nav.sciencedirect.com:443>
>     <http://nav.sciencedirect.com:443> akshay
>     > HIER_DIRECT/91.235.133.74 <http://91.235.133.74>
>     <http://91.235.133.74> -
>     > 1588678050.355   2552 10.0.2.15 TCP_TUNNEL/200 788 CONNECT
>     > nav.sciencedirect.com:443 <http://nav.sciencedirect.com:443>
>     <http://nav.sciencedirect.com:443> akshay
>     > HIER_DIRECT/91.235.133.74 <http://91.235.133.74>
>     <http://91.235.133.74> -
>     > 1588681419.635    647 10.0.2.15 TCP_MISS/200 402 POST
>     > http://scratchpads.eu/modules/statistics/statistics.php akshay
>     > HIER_DIRECT/157.140.2.32 <http://157.140.2.32>
>     <http://157.140.2.32> text/html
>     > 1588681420.055   1069 10.0.2.15 TCP_MISS/200 46772 GET
>     >
>     
> http://scratchpads.eu/sites/all/themes/scratchpads_eu/images/shrimp-202px.png
>     > akshay HIER_DIRECT/157.140.2.32 <http://157.140.2.32>
>     <http://157.140.2.32> image/png
>     >
>     >
>     >
>     >
>     > On Sat, May 2, 2020 at 1:00 AM Alex Rousskov
>     > <rouss...@measurement-factory.com
>     <mailto:rouss...@measurement-factory.com>
>     > <mailto:rouss...@measurement-factory.com
>     <mailto:rouss...@measurement-factory.com>>> wrote:
>     >
>     >     On 5/1/20 12:43 PM, Akshay Hegde wrote:
>     >
>     >     > I have below option globally, which I don't want to make "off"
>     >     > strip_query_terms on
>     >
>     >     > acl track dstdomain "/etc/squid/sites_track.txt"
>     >     > access_log /var/log/squid/full_site_links.log squid_custom track
>     >
>     >     > however for specific ACL I would like to log full URL with query
>     >     > parameters, how this can be done ?
>     >
>     >     I have not tested this, and the results may be
>     version-dependent, but
>     >     according to logformat documentation[1], %ru honors
>     strip_query_terms
>     >     while %>ru does not:
>     >
>     >         logformat strippedFormat %ts... %ru ...
>     >         access_log ... strippedFormat track !specific_ACL
>     >
>     >         logformat detailedFormat %ts... %>ru ...
>     >         access_log ... detailedFormat track specific_ACL
>     >
>     >     [1] http://www.squid-cache.org/Doc/config/logformat/
>     >
>     >
>     >     HTH,
>     >
>     >     Alex.
>     >
>     >     > On Fri, May 1, 2020 at 7:05 PM Alex Rousskov wrote:
>     >     >
>     >     >     On 5/1/20 1:20 AM, Akshay Hegde wrote:
>     >     >
>     >     >     > *1. How to disable logging of few ACLs ?
>     >     >
>     >     >     Use "access_log none aclX" to prevent creation of access.log
>     >     records for
>     >     >     transactions matching aclX. See
>     >     >   
>     >   
>       
> http://lists.squid-cache.org/pipermail/squid-users/2020-April/021876.html
>     >     >     for
>     >     >     some related caveats.
>     >     >
>     >     >
>     >     >     > *2. Kernel Out of Memory
>     >     >
>     >     >     This problem is most likely unrelated to logging. If
>     your Squid is
>     >     >     gradually leaking memory (rather than just being
>     overwhelmed with
>     >     >     traffic), then the first step towards removing those memory
>     >     leaks would
>     >     >     be to upgrade your Squid from the unsupported and buggy
>     v3.1.10.
>     >     >
> 

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