Use Basic Authentication2014/08/12

	Set Basic Authentication and limit squid for users to require authentication.
[1]	Install a package which includes htpasswd.

[root@prox ~]#

yum -y install httpd-tools

[2]	Configure Squid to set Basic Auth.

[root@prox ~]#

vi /etc/squid/squid.conf

acl CONNECT method CONNECT

# line 29: add follows for Basic Auth

auth_param basic program /usr/lib64/squid/ncsa_auth /etc/squid/.htpasswd
auth_param basic children 5
auth_param basic realm Squid Basic Authentication
auth_param basic credentialsttl 5 hours
acl password proxy_auth REQUIRED
http_access allow password

# add a user : create a new file with "-c" ( add the "-c" option only for the initial registration )

[root@prox ~]#

htpasswd -c /etc/squid/.htpasswd cent

New password:

# set password

Re-type new password:
Adding password for user cent

[root@prox ~]#

/etc/rc.d/init.d/squid restart

Stopping squid: ................             [  OK  ]
Starting squid: .                            [  OK  ]

Proxy Client : CentOS

[3]	Configure CentOS Proxy Client for Basic Auth.

[root@client ~]#

vi /etc/profile

# add follows to the end

# username:password@proxyserver:port

MY_PROXY_URL="http://cent:password@prox.srv.world:3128/"

HTTP_PROXY=$MY_PROXY_URL
HTTPS_PROXY=$MY_PROXY_URL
FTP_PROXY=$MY_PROXY_URL
http_proxy=$MY_PROXY_URL
https_proxy=$MY_PROXY_URL
ftp_proxy=$MY_PROXY_URL

export HTTP_PROXY HTTPS_PROXY FTP_PROXY http_proxy https_proxy ftp_proxy

[root@client ~]#

source /etc/profile

# it's OK all, but it's possible to set proxy settings for each application like follows.

# for yum

[root@client ~]#

vi /etc/yum.conf

# add to the end

proxy=http://prox.srv.world:3128/
proxy_username=cent
proxy_password=password

# for wget

[root@client ~]#

vi /etc/wgetrc

# add to the end

http_proxy = http://prox.srv.world:3128/
https_proxy = http://prox.srv.world:3128/
ftp_proxy = http://prox.srv.world:3128/
proxy_user = cent
proxy_passwd = password

Proxy Client : Windows

[4]	For Windows Clients, none of specific settings, but when access to a web, proxy server requires authentication like follows, then input username and password.

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