[ 리눅스 - SQUID ] client가 ftp/http/https를 연결하기 위하여 squid의 default tcp/3128 포트 1개를 보는 것이 맞을런지요 ?
SQUID를 사용Ȣ16;여 Forward Proxy를 사용시에,
Client ------------> Proxy(SQUID) 연결.104;lj16; 구1312;에서, SUQID가 listen Ȣ16;lj16; 포트lj16; 1개(default 3128)만 열만 .104;더라구요1\  Client 1077;1109;에서lj16; ftp/http/https가 보lj16; IP/Port가 모.160; ᇼ1;1068;해 1648;lj16;,144; 같1008;데 1060;런 1060;해가 맞lj16; ,163; 1068;런1648;요 ?
2\ 1번1060; 맞다면, SQUID에서 본1064;1060; 0155;1008; 3128 port /196; 수신한 프/196;토콜1012; ftp/http/https를 패ᓟ1;1012; 까서 안1032; 내용에 따라서 1201;1208;Ȣ16;,172; 1064;터넷 해NJ17; 서버/196; 다시 연결Ȣ16;lj16; ,148;1648;요 ?
1060;/111;다면, squid가 Deep Packet Inspection(DPI) 기능1012; 1068;ǥ12; Ȣ16;lj16; ,144; 같아서요 
아시lj16; ǥ16;1032; 한수 가름침 ǥ12;ᓠ1; 드/140; 봅니다.
#### CLIENT@
# profile
export proxy_socket=http://172.31.11.133:3128/
export ftp_proxy=$proxy_socket
export http_proxy=$proxy_socket
export https_ proxy=$proxy_socket
#### SERVER@
#> more /etc/squid/squid.conf
# 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 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
# And finally deny all other access to this proxy
http_access deny all
# Squid normally listens to port 3128
http_port 3128
감사합니다.