centos上配置squid只允许一个ip

Question

我使用通过 google 找到的指南在 centos 6.4 上设置 squid。我正在使用 VPS 并从我的家用计算机连接到它以匿名浏览并连接到 ftp 服务器进行工作。它工作正常，但是到目前为止，任何人都可以连接到代理。如何限制它只允许我的家庭 ip？

这是我的配置，

#
# Recommended minimum configuration:
#
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

# 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:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager
http_access allow all
http_access allow localnet

# 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

# 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 0.0.0.0:3128

# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# 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

# 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

via off
forwarded_for off

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

tcp_outgoing_address public_ip

Answer 1

在您拥有的默认配置中，有一个名为 localnet 的 acl。您可以修改 localnet acl 以仅包含您正在连接的源地址而不是默认值，或者您可以为您的源地址创建自己的 acl。您需要在授予访问权限的 http_access 命令中使用它。

我看到您的配置中使用了以下所有 http_access 命令：

http_access allow manager localhost #1
http_access deny manager #2
http_access allow all #3
http_access allow localnet #4
http_access deny !Safe_ports #5
http_access deny CONNECT !SSL_ports #6
http_access allow localnet #7
http_access allow localhost #8
http_access deny all #9

4 和 7 是多余的。如果您的源地址与 localnet 匹配，则可以删除 3。 3 还涵盖了 5 和 6 中给出的一些安全功能。我建议以下内容，其中 localnet acl 仅针对您的源地址进行了修改：

acl localnet src <source_ip>

http_access allow manager localhost #1
http_access deny manager #2
http_access deny !Safe_ports #3
http_access deny CONNECT !SSL_ports #4
http_access allow localnet #5
http_access allow localhost #6
http_access deny all #7

我认为这样可以解决问题。