Estou usando o squid para construir um servidor proxy http. Ele funciona bem até que eu tentei me conectar ao link no meu cliente (Mac OS X 10.10). Toda vez que tento conectar-me ao Facebook, um erro "não é possível conectar-se ao servidor proxy" é gerado, e os outros sites que anteriormente estavam acessíveis relatam o mesmo erro também. Eu tenho que parar o squid e reiniciá-lo depois de alguns segundos. Parece que quando se conecta ao Facebook, o squid cai. O mesmo problema também está no Twitter. Alguém sabe o que há de errado? Obrigada!
Aqui está o meu arquivo squid.conf :
#
# Recommended minimum configuration:
#
# 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 localnet src fc00::/7 # RFC 4193 local private network range
acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines
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
#
# Recommended minimum Access Permission configuration:
#
# 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
#
auth_param basic program /usr/bin/basic_ncsa_auth /var/squid/etc/password
auth_param basic children 5
auth_param basic realm My Proxy Caching Domain
auth_param basic credentialsttl 2 hours
acl mall proxy_auth REQUIRED
#acl mall src 0.0.0.0/0
http_access allow mall
# 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 deny all
# Squid normally listens to port 3128
http_port 8899
# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256
# 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
O log do squid diz:
1442643581.775 0 114.255.40.16 TCP_DENIED/407 3757 CONNECT www.facebook.com:443 - HIER_NONE/- text/html
execute "systemctl status squid.service":
squid.service - Squid caching proxy
Loaded: loaded (/usr/lib/systemd/system/squid.service; disabled)
Active: active (running) since Fri 2015-09-18 17:45:01 EDT; 8h ago
Process: 1213 ExecStop=/usr/sbin/squid -k shutdown -f $SQUID_CONF (code=exited, status=0/SUCCESS)
Process: 1220 ExecStart=/usr/sbin/squid $SQUID_OPTS -f $SQUID_CONF (code=exited, status=0/SUCCESS)
Process: 1215 ExecStartPre=/usr/libexec/squid/cache_swap.sh (code=exited, status=0/SUCCESS)
Main PID: 1223 (squid)
CGroup: /system.slice/squid.service
├─1223 /usr/sbin/squid -f /etc/squid/squid.conf
├─1225 (squid-1) -f /etc/squid/squid.conf
├─1226 (logfile-daemon) /var/log/squid/access.log
└─1227 (basic_ncsa_auth) /var/squid/etc/password
Sep 18 17:45:01 cosmo systemd[1]: Starting Squid caching proxy...
Sep 18 17:45:01 cosmo systemd[1]: Started Squid caching proxy.
Sep 18 17:45:01 cosmo squid[1223]: Squid Parent: will start 1 kids
Sep 18 17:45:01 cosmo squid[1223]: Squid Parent: (squid-1) process 1225 started
Eu tive esse problema executando o Squid 2.7 alguns anos atrás ... uma configuração que funcionou bem em um computador fez isso em um segundo computador. Eu ainda não sei a causa, mas mudando o
# Squid normally listens to port 3128
http_port 8899
volta para a porta padrão 3128 parece resolvê-lo (ou pelo menos para mim).
Tags squid