Hi,
In general, the basic idea is this:
ACLs:
LARGEGROUP (eg. all users)
SMALLGROUP (subset of LARGEGROUP you want to further filter)
SMALLBLACKLIST (site list for SMALLGROUP)
http_access deny SMALLGROUP SMALLBLACKLIST
http_access allow LARGEGROUP [whatever]
http_access deny all
You could technically do this too:
http_access allow SMALLGROUP !SMALLBLACKLIST [whatever]
http_access allow LARGEGROUP !SMALLGROUP [whatever]
http_access deny all
But it's more difficult to follow and maintain. (For instance, you need
to specify the 'whatever' logic twice, instead of once. Also, if
'whatever' is achieved on multiple lines, things are further complicated.)
When handling exceptions, handle them first, then the more general ones.
Cheers,
Bgs
On 04/12/2017 20:51, erdosain9 wrote:
Hi to all.
I want to block web.whatsapp.com in some users.
But i already have those users in other group.
I suppose this is not a problem if i put the acl in some order... but its
not working.
For example, i have group
I-FULL: user1, user2, user3
I-RESTRINGIDOS: user1
This is my config file
####GRUPOS DE IP
acl sin_autenticacion src "/etc/squid/listas/sin_autenticacion.lst"
###Kerberos Auth with ActiveDirectory###
auth_param negotiate program /lib64/squid/negotiate_kerberos_auth -s
HTTP/squid.domain.lan@xxxxxxxxxx
auth_param negotiate children 35 startup=0 idle=1
auth_param basic credentialsttl 2 hours
auth_param negotiate keep_alive on
external_acl_type i-restringidos %LOGIN
/usr/lib64/squid/ext_kerberos_ldap_group_acl -g i-restringidos@xxxxxxxxxx
external_acl_type i-full %LOGIN /usr/lib64/squid/ext_kerberos_ldap_group_acl
-g i-full@xxxxxxxxxx
external_acl_type i-limitado %LOGIN
/usr/lib64/squid/ext_kerberos_ldap_group_acl -g i-limitado@xxxxxxxxxx
#GRUPOS
acl i-restringidos external i-restringidos
acl i-full external i-full
acl i-limitado external i-limitado
####Bloquea Publicidad ( http://pgl.yoyo.org/adservers/ )
acl ads dstdom_regex "/etc/squid/listas/ad_block.lst"
http_access deny ads
#deny_info TCP_RESET ads
####Streaming
acl youtube url_regex -i \.flv$
acl youtube url_regex -i \.mp4$
acl youtube url_regex -i watch?
acl youtube url_regex -i youtube
acl facebook url_regex -i facebook
acl facebook url_regex -i fbcdn\.net\/v\/(.*\.mp4)\?
acl facebook url_regex -i fbcdn\.net\/v\/(.*\.jpg)\?
acl facebook url_regex -i akamaihd\.net\/v\/(.*\.mp4)\?
acl facebook url_regex -i akamaihd\.net\/v\/(.*\.jpg)\?
##Dominios denegados
*acl restringidos dstdomain "/etc/squid/listas/restringidos.lst" (here is
.whatsapp.com)
*acl dominios_denegados dstdomain "/etc/squid/listas/dominios_denegados.lst"
#Puertos
acl SSL_ports port 443
acl SSL_ports port 4443
acl SSL_ports port 8443
acl SSL_ports port 8080
acl SSL_ports port 20000
acl SSL_ports port 10000
acl SSL_ports port 2083
acl Safe_ports port 631 # httpCUPS
acl Safe_ports port 85
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 4443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 8443 # httpsalt
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 Safe_ports port 8080 # edesur y otros
acl Safe_ports port 2199 # radio
acl CONNECT method CONNECT
#
# Deny requests to certain unsafe ports
http_access deny !Safe_ports
# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports
# Only allow cachemgr access from localhost
http_access allow localhost manager
http_access deny manager
# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
http_access deny to_localhost
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#
# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow sin_autenticacion
*http_access allow i-restringidos !restringidos
*http_access allow i-limitado !dominios_denegados
*http_access allow i-full !dominios_denegados
*http_access allow localhost
# And finally deny all other access to this proxy
http_access deny all
# Squid normally listens to port 3128
http_port 127.0.0.1:3128
http_port 192.168.1.215:3128 ssl-bump generate-host-certificates=on
dynamic_cert_mem_cache_size=4MB cert=/etc/squid/ssl_cert/myca.pem
key=/etc/squid/ssl_cert/myca.pem
acl step1 at_step SslBump1
acl excludeSSL ssl::server_name_regex "/etc/squid/listas/excluidosSSL.lst"
ssl_bump peek step1
ssl_bump splice excludeSSL
ssl_bump bump all
#tcp_outgoing_address
# Uncomment and adjust the following to add a disk cache directory.
cache_dir diskd /var/spool/squid 15000 16 256
cache_mem 500 MB
#maximum_object_size_in_memory 1 MB
cache_swap_low 70
cache_swap_high 85
# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid
#Your refresh_pattern
refresh_pattern -i \.jpg$ 30 0% 30 ignore-no-cache ignore-no-store
ignore-private
refresh_pattern -i ^http:\/\/www\.google\.com\/$ 0 20% 360 override-expire
override-lastmod ignore-reload ignore-no-cache ignore-no-store
reload-into-ims ignore-must-revalidate
#
# Add any of your own refresh_pattern entries above these.
#
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
###ACTIVAR EN CASO DE "Connection reset by peer" EN MUCHOS HOST
via off
forwarded_for delete
request_header_access From deny all
request_header_access Server deny all
request_header_access WWW-Authenticate deny all
request_header_access Link deny all
request_header_access Cache-Control deny all
request_header_access Proxy-Connection deny all
request_header_access X-Cache deny all
request_header_access X-Cache-Lookup deny all
request_header_access Via deny all
request_header_access X-Forwarded-For deny all
request_header_access Pragma deny all
request_header_access Keep-Alive deny all
###
#Pools para ancho de banda
delay_pools 5
#Ancho de Youtube
delay_class 1 2
delay_parameters 1 1000000/1000000 10000/100000
delay_access 1 allow i-limitado youtube !facebook
delay_access 1 deny all
#Ancho de Facebook
delay_class 2 2
delay_parameters 2 1000000/1000000 50000/256000
delay_access 2 allow i-limitado facebook !youtube
delay_access 2 deny all
#Ancho de banda YOUTUBE FULL
delay_class 3 1
delay_parameters 3 1000000/1000000
delay_access 3 allow i-full youtube !facebook
delay_access 3 deny all
#Ancho de banda LIMITADO
delay_class 4 2
delay_parameters 4 4000000/4000000 100000/500000
delay_access 4 allow i-limitado !youtube !facebook
delay_access 4 deny all
#Ancho de banda FULL
delay_class 5 2
delay_parameters 5 4000000/4000000 500000/1000000
delay_access 5 allow i-full !youtube !facebook
delay_access 5 deny all
dns_nameservers 192.168.1.10 192.168.1.22
visible_hostname squid.domain.lan
# try connecting to first 25 ips of a domain name
forward_max_tries 25
# fix some ipv6 errors (recommended to comment out)
dns_v4_first on
Can somebody give me a hand??
Thanks!
--
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