내가 이런 경우를 당할 줄이야...
계속 google에 접속이 안 되서 google이 문 닫은 줄 알았다..
하지만 그게 아니었다.
문제는 요놈 C:\Windows\System32\drivers\etc\hosts 이었다.
hosts 파일을 바꿔치기 하는 바이러스나 애드웨어한테 당한 것이다.
hosts 파일에 내용을 싹 지우고 아래와 같이 바꿔주니 해결...
# Copyright (c) 1993-2009 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
# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
127.0.0.1 localhost
