我们架设了一个网站，由于某些原因，只能通过计算机名（主机名）访问这个站点，而不能通过IP地址访问。
而有些时候，我们局域网内的用户是可以访问的，但又有一部分用户不能访问。为此，我查阅了一些资料，发现了这个解决办法。原来在C:\windows\system32\drivers\etc目录下，有一个名为hosts的文件。其内容如下：
1 
# Copyright (c) 1993 - 1999 Microsoft Corp.
2#
3# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
4#
5# This file contains the mappings of IP addresses to host names. Each
6# entry should be kept on an individual line. The IP address should
7# be placed in the first column followed by the corresponding host name.
8# The IP address and the host name should be separated by at least one
9# space.
10#
11# Additionally , comments (such as these) may be inserted on individual
12# lines or following the machine name denoted by a '#' symbol.
13#
14# For example:
15#
16# 102.54.94.97 rhino.acme.com # source server
17# 38.25.63.10 x.acme.com # x client host
18
19 127.0.0.1 localhost
# Copyright (c) 1993 - 1999 Microsoft Corp.2
#3
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.4
#5
# This file contains the mappings of IP addresses to host names. Each6
# entry should be kept on an individual line. The IP address should7
# be placed in the first column followed by the corresponding host name.8
# The IP address and the host name should be separated by at least one9
# space.10
#11
# Additionally , comments (such as these) may be inserted on individual12
# lines or following the machine name denoted by a '#' symbol.13
#14
# For example:15
#16
# 102.54.94.97 rhino.acme.com # source server17
# 38.25.63.10 x.acme.com # x client host18
19
127.0.0.1 localhost 我们看到，在最后一行的127.0.0.1 localhost. 前面是IP地址，后面就是对应这个IP的主机名。因此，现在我们访问127.0.0.1和localhost都是访问的本地主机。
现在，我们在之后增加一行：
1 211.143.112 .* techserver
211.143.112 .* techserver 现在我们就可以通过主机名techserver访问IP地址为211.143.112.*的主机了。