CentOS 7
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Basic Authentication
2014/07/24
 
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 26: add follows for Basic Auth

auth_param basic program /usr/lib64/squid/basic_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 ~]#
systemctl restart squid

Proxy Client : CentOS
[3] Configure CentOS Proxy Client for Basic Authentication.
[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 follows to the end

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

[root@client ~]#
vi /etc/wgetrc
# add follows 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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