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On Fri, Dec 11, 2015 at 08:03:14PM -0700, thelma@×××××××××××.com wrote |
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> Does anybody have an idea how to block facebook? |
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> |
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> I'm using dd-wrt. The "access restriction" can block http but not https |
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> and I'm not good in iptables :-/ |
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> In addition users are using VirtualBox on the network as well. |
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|
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An excerpt from my /var/lib/iptables/rules-save ruleset... |
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|
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[0:0] -A INPUT -s 31.13.24.0/21 -j FECESBOOK |
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[154:11168] -A INPUT -s 31.13.64.0/18 -j FECESBOOK |
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[0:0] -A INPUT -s 66.220.144.0/20 -j FECESBOOK |
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[0:0] -A INPUT -s 69.63.176.0/20 -j FECESBOOK |
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[0:0] -A INPUT -s 69.171.224.0/19 -j FECESBOOK |
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[0:0] -A INPUT -s 74.119.76.0/22 -j FECESBOOK |
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[0:0] -A INPUT -s 103.4.96.0/22 -j FECESBOOK |
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[0:0] -A INPUT -s 173.252.64.0/18 -j FECESBOOK |
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[0:0] -A INPUT -s 204.15.20.0/22 -j FECESBOOK |
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|
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[0:0] -A OUTPUT -d 31.13.24.0/21 -j FECESBOOK |
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[3763325:225839770] -A OUTPUT -d 31.13.64.0/18 -j FECESBOOK |
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[56:3360] -A OUTPUT -d 66.220.144.0/20 -j FECESBOOK |
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[0:0] -A OUTPUT -d 69.63.176.0/20 -j FECESBOOK |
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[874:52440] -A OUTPUT -d 69.171.224.0/19 -j FECESBOOK |
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[0:0] -A OUTPUT -d 74.119.76.0/22 -j FECESBOOK |
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[0:0] -A OUTPUT -d 103.4.96.0/22 -j FECESBOOK |
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[3306:198360] -A OUTPUT -d 173.252.64.0/18 -j FECESBOOK |
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[0:0] -A OUTPUT -d 204.15.20.0/22 -j FECESBOOK |
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|
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[3767715:226105098] -A FECESBOOK -j LOG --log-prefix "FECESBOOK:" --log-level 6 |
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[3767715:226105098] -A FECESBOOK -j DROP |
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|
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It's OK to change the numbers in brackets to [0:0]. They represent |
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the number of [packets:bytes] since the rule was last updated. Which |
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block has the most traffic depends on which part of the planet you're |
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on. Here in Toronto, Canada outbound traffic to the 31.13.64.0/18 |
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block, specifically 31.13.80.3, is the most common hit. This comes from |
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websites with Facebook beacons trying to track every man and his dog. |
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|
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You'll notice the occasional website with a small rectangle that says |
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"...can't establish a connection to the server at...". Insert your |
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browser's name at the left, and the website name (Facebook, |
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ad.doubleclick.net, etc) at the right. |
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|
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-- |
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Walter Dnes <waltdnes@××××××××.org> |
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I don't run "desktop environments"; I run useful applications |
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