Ygtjki

I configured a raspberry as a little server. In particular I installed DHCP, squid proxy and squidGuard for log the network activity which pass through my raspberry. Actually i have a black list on squidGuard which denies the access to gamble websites.

My current OS version: Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux.

Squid: Version 3.5.23, SquidGuard: 1.5 Berkeley DB 5.3.28: (September 9, 2013).

My squid.conf file:

acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
redirect_program /usr/bin/squidGuard
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
http_access allow localnet
http_access allow localhost
http_access deny all
http_port 3128
cache_dir ufs /var/spool/squid 1000 16 256
coredump_dir /var/spool/squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|?) 0 0% 0
refresh_pattern . 0 20% 4320

My squidGuard.conf file:

dbhome /var/lib/squidguard/db
logdir /var/log/squidguard
time workhours 
 weekly mtwhf 08:00 - 16:30
 date *-*-01 08:00 - 16:30

src admin 
 ip 1.2.3.4 1.2.3.5
 user root foo bar
 within workhours


src foo-clients 
 ip 172.16.2.32-172.16.2.100 172.16.2.100 172.16.2.200


src bar-clients 
 ip 172.16.4.0/26


dest good 
dest local 
dest porn 
dest gamble
 domainlist gamble/domains
 urllist gamble/urls


acl 
 admin 
 pass any
 
 foo-clients within workhours 
 pass good !in-addr !porn any
 else 
 pass any
 
 bar-clients 
 pass local none
 
 default 
 pass !gamble any
 redirect http://admin.foo.bar.de/cgi-bin/blocked.cgi? 
 clientaddr=%a&clientname=%n
 &clientuser=%i&clientgroup=%s&targetgroup=%t&url=%u
 

After all of these infos, for example there is user A and user B, A can visit gamble websites whereas B not.

Is there any way to achieve this result using squid/squidGuard? But i don't want that user A bypass the proxy, only allow him to surf on gamble websites.