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Hotmail/gmail login problem - Squid Transparent Proxy
This is a discussion on Hotmail/gmail login problem - Squid Transparent Proxy within the CentOS / RHEL / Fedora forums, part of the Linux Distribution category; I have configured transparent proxy using the following guide Code: http://www.cyberciti.biz/tips/linux-setup-transparent-proxy-squid-howto.html and added only the rules below to a startup ...
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03-03-2009, 09:43 PM
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Hotmail/gmail login problem - Squid Transparent Proxy
I have configured transparent proxy using the following guide
Code:
http://www.cyberciti.biz/tips/linux-setup-transparent-proxy-squid-howto.html Code:
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j DNAT --to 192.168.15.3:3128 iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128 here is my squid configuration: Code:
http_port 3128 transparent acl all src 0.0.0.0/0.0.0.0 acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl vmware-network src 192.168.15.3 192.168.85.0/24 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 http_access allow manager localhost http_access deny manager http_access allow vmware-network http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localhost http_access deny all I tried this on my network but it does not work however, When I configure my browsers (IE 7 and Firefox) to use the proxy server, the problem does not occur at all. Is there a mistake in my configuration or the iptables rules? 
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04-03-2009, 03:42 PM
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Do you see any error or warning message in squid log files?
__________________
Vivek Gite Linux Evangelist  Be proud RHEL user, and let the world know about your enterprise choices! Join RedHat user group. Always use CODE tags for posting system output and commands! Do you run a Linux? Let's face it, you need help
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04-03-2009, 06:16 PM
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Nothing, no error in squid log files. But when I set the proxy address and port in the browser everything works fine, no problem in accessing hotmail, gmail, yahoo mail etc.
[EDIT] 1 more thing, I have installed DHCP service and webmin on that server and use it as a gateway. I cannot access webmin through the proxy on that server. Last edited by Cyborg_sa; 04-03-2009 at 06:22 PM.
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03-04-2009, 01:16 AM
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#open webmin port
iptables -A INPUT -p tcp -m tcp --dport 10000 -j ACCEPT #or, if rule above doesn't work # Unlimited access to loop back iptables -A INPUT -i lo -j ACCEPT iptables -A OUTPUT -o lo -j ACCEPT #and, finally # unlimited access to LAN iptables -A INPUT -i $LAN_IN -j ACCEPT iptables -A OUTPUT -o $LAN_IN -j ACCEPT Second , remember that you cannot access any https pages via transparent proxy because squid cannot cache secure pages If you don't have content filtering and/or bandwidth limiters in squid i sugest to use as "transparent proxy" a simple gateway with NAT: # set this system as a router for Rest of LAN iptables --table nat --append POSTROUTING --out-interface $INTERNET -j MASQUERADE iptables --append FORWARD --in-interface $LAN_IN -j ACCEPT hope it helps ! Last edited by yoda; 03-04-2009 at 01:22 AM.
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03-04-2009, 01:26 AM
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#open webmin port
iptables -A INPUT -p tcp -m tcp --dport 10000 -j ACCEPT #or, if rule above doesn't work # Unlimited access to loop back iptables -A INPUT -i lo -j ACCEPT iptables -A OUTPUT -o lo -j ACCEPT #and, finally # unlimited access to LAN iptables -A INPUT -i $LAN_IN -j ACCEPT iptables -A OUTPUT -o $LAN_IN -j ACCEPT Second , remember that you cannot access any https pages via transparent proxy because squid can not cache secure pages If you don't have content filtering and/or bandwidth limiters in squid i sugest to use as "transparent proxy" a simple gateway with NAT: # set this system as a router for Rest of LAN iptables --table nat --append POSTROUTING --out-interface $INTERNET -j MASQUERADE iptables --append FORWARD --in-interface $LAN_IN -j ACCEPT hope it helps !
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