setup squid on centos 7

0. SQUID INFO

OS : CentOS7 x86_64

 

1. SQUID Install

# yum install squid

 

2. SQUID config

Config file : /etc/squid/squid.conf

 

3. Setup ACL

• vi /etc/squid/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

# Domain ACL
#acl blockdomain dstdom_regex  \.*$
include /etc/squid/conf.d/*.conf

# Domain allow and deny

#
# 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
#

# 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 3128

# 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
cache_mem 1000 MB
logformat squid %tl %6tr %>a %Ss /%03>Hs %<st %[un %Sh/%<a %mt %{User-Agent}>h %rm %ru
cache_access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log
cache_store_log /var/log/squid/store.log

#
# 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

 

3. Make acl file 

/etc/squid/conf.d/***.conf 로 각각의 squid의 도메인을 추가 한다.

ex)  192.169.0.20번 서버를 사용 하는 user1이 naver.com and daum.net에 대한 Proxy 도메인 오픈 요청
# vi /etc/squid/conf.d/user1.conf

acl user1_url dstdomain naver.com
acl user1_rul dstdomain daum.net

acl user1_ip src 192.168.0.20

http_access allow user1_ip user1_url

 

4. SQUID Reload or Restart

systemctl reload squid 또는 systemctl restart squid

 

4. client proxy setup

아래의 형태로 각각 설정한 포트로 적용 하여 사용 한다.
export http_proxy="squid-server-ip:3218"
export https_proxy="squid-server-ip:3218"