1. Mở file host này ra (nhớ mở bằng notepad), nằm trong đường dẫn c:\windows\system32\drivers\etc\hosts
2. Thêm 127.0.0.1 tên website muốn block (nhớ là ko được thay đổi nội dung original nhé)
3. Restart windows. Và từ bây giờ sẽ không access vô các trang web đã chỉ định bằng bất kỳ web browser nào
Cấu trúc của file hosts
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# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
127.0.0.1 localhost
127.0.0.1 Tên_website_cần_block
..................................
