Hello Folks,
Need help in setting up Squid 3.1.23 Transparent Proxy on Centos 6.7 with 2 NICs.
Here are my setup details...
Centos 6.7 (64bit) running on Hyper-V VM
eth0 is connected to WAN and eth1 is connected to LAN network
Quote:
eth0 :
ip = 10.218.104.146
mask = 255.255.254.0
gw = 10.218.103.1
dns =10.221.1.15 (Local DNS Server)
dns =10.221.1.16 (Local DNS Server)
|
Quote:
eth1 -
ip = 10.10.10.123
mask = 255.255.255.0
gw -No Gateway
|
My squid config file looks like below
Quote:
# cat /etc/squid/squid.conf
#
# 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
#Local Area Network
acl lan src 10.10.10.0/24
#Allow LAN
http_access allow lan
#Hostname
visible_hostname master.mwdbcoe.net
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
# 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 3128 transparent
# 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
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I ran following commands, saved iptables rules and restarted the service
Quote:
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j DNAT --to 10.10.10.123:3128
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128
iptables -I INPUT -s 10.10.10.0/24 -p tcp --dport 3128 -j ACCEPT
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I have used 10.10.10.123 as GW on a test machine (10.10.10.x subnet) to see the internet access but in vain.
What am I missing here? Any help would be appreciated.
P.S. I am fairly new to Linux world and learning things everyday. Kindly bear with me
Regards
