Squid Proxy - Fazendo exatamente o oposto do que eu quero - inverta Allow / Deny

Question

Eu configurei este arquivo de configuração do Squid e ele parece estar fazendo exatamente o oposto do que eu quero. Está bloqueando o tráfego de 65.134.25.35 e 122.45.36.27. E permitindo que todos os outros clientes se conectem em 80. Isso é normal? Minha primeira vez trabalhando com o Squid. Nota: IPs reais foram ligeiramente alterados.

acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
#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
acl localhet src 197.202.60.0/24        # My Organization
acl localnet src 197.202.61.0/24        # My Organization
acl localnet src 197.202.62.0/24        # My Organization
acl localnet src 197.202.63.0/24        # My Organization
#acl localnet src fc00::/7               # RFC 4193 local private network range
#acl localnet src fe80::/10              # RFC 4291 link-local (directly plugged) machines

acl safe_ports port 80                  # http

acl CONNECT method CONNECT
acl allow dstdomain  .somecompany.com .anothercompany.com
acl all_others dst all
acl myclients src 65.134.25.35 122.45.36.27

# Recommended minimum Access Permission configuration:
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# Deny requests to certain unsafe ports
#http_access deny !safe_ports

# 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

# Disable Caching
cache deny all
#pass accelerated domains to the peer
# 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 localnet
http_access allow localhost
# And finally deny all other access to this proxy
http_access allowed
http_access deny all_others
#http_access allow whitelist
http_access allow myclients
# Squid normally listens to port 3128
http_port 80
# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?
# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid
# 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

    

Answer 1

A ordem das linhas http_access no squid.conf é importante. Você tem o deny all_others aplicado antes do seu allow myclients , que é a ACL de 65.134.25.35 . As configurações de http_access são processadas em ordem. Assim que uma ACL for correspondida, a solicitação será permitida ou negada e o processamento da regra será interrompido. O myclients ACL nunca fará nada de útil, pois tudo já foi negado. Então você deve mover quaisquer ACLs criadas acima do comentário # And finally deny... .

# from where browsing should be allowed
http_access allow localnet
http_access allow localhost
#http_access allow whitelist
http_access allow myclients
# And finally deny all other access to this proxy
#http_access allowed
http_access deny all_others

    

Answer 2

Essas linhas de http_access são confusas.

Você está permitindo o acesso por localnet. depois, negar acesso a todos e depois permitir clientes individuais novamente.

Veja este link sobre como solucionar problemas de ACLs: link