CentOS 7.6 安装 Squid

yum install -y dos2unix openssl  httpd  squid  vim

# 前期关闭防火墙， 不想关闭防火墙自行配置 Squid 端口
systemctl stop firewalld.service

touch /etc/squid/passwd
chmod -R 777 /etc/squid/passwd

# youname  是认证用户, 回车输入输入 账户 密码， 不超过 8 位
[root@localhost ~]# htpasswd -c /etc/squid/passwd youname  
New password: 
Re-type new password: 
Adding password for user youname


/usr/lib64/squid/basic_ncsa_auth /etc/squid/passwd   # 检查认证用户
youname passwd                           # 用户 及密码 出现 OK 则成功

编辑配置文件

vim /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

#
# 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
# 添加认证
auth_param basic program /usr/lib64/squid/basic_ncsa_auth /etc/squid/passwd
auth_param basic children 5
auth_param basic realm Welcome to pycredit's proxy-only web server
acl squid_user proxy_auth REQUIRED
acl Safe_ports port 80
http_access deny !Safe_ports
http_access allow squid_user



# And finally deny all other access to this proxy
http_access deny all

# Squid normally listens to port 3128  配置端口
http_port 3328

# Uncomment and adjust the following to add a disk cache directory.
cache_dir ufs /var/spool/squid 100 16 256
cache_mem 0 MB

# 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
# 添加 hostname
visible_hostname proxy.daoiqi.com

使用

squid -z                         # 第一次安装需要初始化
systemctl start  squid         # 启动 squid 
systemctl status squid         # 查看 squid 运行状态
systemctl stop   squid         # 停止 squid
systemctl restart  squid        # 重启 squid
squid -k parse               # 检查配置文件是否有误
netstat -lnapt | grep squid      # 查看端口号

# 运行squid，将日志记录到标准错误。这样，你能轻易的定位任何错误或问题，并且确认squid是否成功启动。
# -N 选项来保持squid在前台运行，
# -d1 选项在标准错误里显示1级别的调试信息。
squid -N -d1                  


adsl-stop      # 拨号
adsl-start     # 拨号
pppoe-start     # 启动拨号
pppoe-status    # 查看状态
pppoe-status|grep inet |awk {'print $2'}       # 获取 IP
curl -x : www.baidu.com           # 测试