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How to install Squid Proxy with multiple outgoing IP on CentOS6

1. SSH to your Linux Cloud Server or SSD Cloud Server

yum -y install squid
chkconfig squid on

2. mv /etc/squid/squid.conf /etc/squid/squid.conf.original

3. vi /etc/squid/squid.conf

4. add this into the configuration file

http_port 3128

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
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

http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localnet
http_access allow localhost
hierarchy_stoplist cgi-bin ?
coredump_dir /var/spool/squid
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
auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/squid_access  # change to lib64 for 64bit Centos
auth_param basic childred 5
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
acl ncsaauth proxy_auth REQUIRED
http_access allow ncsaauth
forwarded_for off
acl ip1 myip 192.168.0.1
tcp_outgoing_address 192.168.0.1 ip1
acl ip2 myip 192.168.0.2
tcp_outgoing_address 192.168.0.2 ip2
acl ip3 myip 192.168.0.3
tcp_outgoing_address 192.168.0.3 ip3
acl ip4 myip 192.168.0.4
tcp_outgoing_address 192.168.0.4 ip4
acl ip5 myip 192.168.0.5
tcp_outgoing_address 192.168.0.5 ip5
request_header_access Allow allow all
request_header_access Authorization allow all
request_header_access WWW-Authenticate allow all
request_header_access Proxy-Authorization allow all
request_header_access Proxy-Authenticate allow all
request_header_access Cache-Control allow all
request_header_access Content-Encoding allow all
request_header_access Content-Length allow all
request_header_access Content-Type allow all
request_header_access Date allow all
request_header_access Expires allow all
request_header_access Host allow all
request_header_access If-Modified-Since allow all
request_header_access Last-Modified allow all
request_header_access Location allow all
request_header_access Pragma allow all
request_header_access Accept allow all
request_header_access Accept-Charset allow all
request_header_access Accept-Encoding allow all
request_header_access Accept-Language allow all
request_header_access Content-Language allow all
request_header_access Mime-Version allow all
request_header_access Retry-After allow all
request_header_access Title allow all
request_header_access Connection allow all
request_header_access Proxy-Connection allow all
request_header_access User-Agent allow all
request_header_access Cookie allow all
request_header_access All deny all

5. Save squid.conf

6. chkconfig squid on

7. Restart Squid with “service squid restart”

About the Author
martin
Martin has been in the Web Hosting industry for more than 2 decades. He is specialized on Web Security, Cloud Hosting, Cloud computing and different types of virtualization.