Howto block or ban facebook by squid proxy

Howto block or ban facebook by squid proxy

1. Install squid proxy in your network

http://ithelpblog.com/os/linux/redhat/centos-redhat/install-and-configure-squid-proxy-on-centos-6-3-5-9-5-8-or-redhat-rhel-fedora-17-18/

2. Configure squid configuration to block facebook in your office

vi /etc/squid/squid.conf
#
# Recommended minimum configuration:
#
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 localnet src fc00::/7 # RFC 4193 local private network range
acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines
acl ithelpblog.com src 192.168.0.0/24acl 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
acl bannedsites dstdomain .facebook.com .twitter.com .yahoo.com
http_access deny CONNECT bannedsites
#
# 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# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_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
## 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
http_access allow ithelpblog.com
# And finally deny all other access to this proxy
http_access deny all# Squid normally listens to port 3128
http_port 8080# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# 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

forwarded_for off
visible_hostname ithelpblog

3. Start squid proxy

[root@localhost ~]# /etc/init.d/squid restart

4. Use Proxy on Web browser

Use Proxy on Firefox

Use Proxy on IE

Test go to facebook.com by firefox

Done. Now facebook is blocked on your network.

That’s all. Thanks for using IThelpblog.com.

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