How to remove and block Facebook in Ubuntu

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July 5, 2013 by kbtechworld

If we are using UFW or GUFW, we can load the subnets into the rules stored in /lib/ufw/user.rules

$ host http://www.facebook.com

www.facebook.com is an alias for star.c10r.facebook.com.
star.c10r.facebook.com has address 31.13.64.1
star.c10r.facebook.com has IPv6 address 2a03:2880:10:8f01:face:b00c::9
star.c10r.facebook.com mail is handled by 10 msgin.t.facebook.com.

$ whois -h whois.radb.net 31.13.64.1
route:      31.13.64.0/24
descr:      Facebook, Inc.
origin:     AS32934
mnt-by:     MAINT-AS32934
changed:    jj@fb.com 20111025
source:     RADB$ whois -h whois.radb.net '!gAS32934' | tr " " "\n" | sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4 
A939
Code:
31.13.24.0/21
31.13.64.0/18
31.13.64.0/19
31.13.64.0/24
31.13.65.0/24
31.13.66.0/24
31.13.67.0/24
31.13.68.0/24
31.13.69.0/24
31.13.70.0/24
31.13.71.0/24
31.13.72.0/24
31.13.73.0/24
31.13.74.0/24
31.13.75.0/24
31.13.76.0/24
31.13.77.0/24
31.13.78.0/24
31.13.79.0/24
31.13.80.0/24
31.13.82.0/24
31.13.83.0/24
31.13.84.0/24
31.13.85.0/24
31.13.86.0/24
31.13.87.0/24
31.13.88.0/24
31.13.89.0/24
31.13.90.0/24
31.13.91.0/24
31.13.92.0/24
31.13.93.0/24
31.13.94.0/24
31.13.95.0/24
31.13.96.0/19
66.220.144.0/20
66.220.144.0/21
66.220.152.0/21
66.220.159.0/24
69.63.176.0/20
69.63.176.0/20
69.63.176.0/20
69.63.176.0/21
69.63.176.0/21
69.63.176.0/24
69.63.178.0/24
69.63.184.0/21
69.63.186.0/24
69.171.224.0/19
69.171.224.0/20
69.171.239.0/24
69.171.240.0/20
69.171.253.0/24
74.119.76.0/22
103.4.96.0/22
173.252.64.0/18
173.252.64.0/19
173.252.70.0/24
173.252.96.0/19
204.15.20.0/22