Need help with content filtering/website blocking

Swaggy · 09-17-2013, 07:08 AM

hi i am a newbee to linux.

i have done internet sharing between centos machine acting as router and a computer on lan using iptables ,now i want to use shorewall as my firewall to block few social networking sites,but whenever i start the shorewall service ,the internet sharing gets disabled.

can anybody help me out of this?

TobiSGD · 09-17-2013, 07:35 AM

Firewalls usually block ports, not content, so a firewall is the wrong tool for your purpose. You need to install a filtering proxy for what you want to achieve, for example Squid: http://www.howtoforge.com/web-filtering-on-squid-proxy

Swaggy · 09-17-2013, 07:40 AM

i tried with squid transparent proxy ,but it isn't working properly

Habitual · 09-17-2013, 08:24 AM

Quote:

Originally Posted by Swaggy

it isn't working properly

isn't exactly descriptive of the situation you are facing.

Can you elaborate?
Are there any error messages?
Content that should be filtered but isn't?
Does squid start?

Basically, we need info on what what steps you've taken and what isn't working in detail.