LZ,
你的这个文件是被改过的, 我用WIN7, 未改过的应该是:
# 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
这个文件里,一般是没什么需要写的, 仅仅是你有特殊的网站解析有问题才需要在这里写上内容. 怎么写我就先不说了。
但看了你的内容,
从#开头的前面几行都可以省略, 系统会把这些内容过滤, 只有不带#的行才会被系统执行.
但第一行可以保留, 127.0.0.1 localhost, 在网络上, 可以本地(localhost) 指定为 127.0.0.1 这个地址,同样我们也可以用这个地址当做一个网络问题判断的方面.
你之所以可以打开SIS, 我想可能是你的SIS地址是用IP地址来保存的,这样就不需要DNS解析了, 所以不受影响.
把host文件清理一下, 系统重起, 看是否能打开网站. 如果这个文件又被篡改, 建议先杀毒.