数据来自:apnic.net

公司客户的一些国际贸易网站需要把国内用户访问屏蔽掉,通过http://hi.baidu.com/omys 提供的方法直接取得下面的CN IP段…

112.0.0.0-112.63.255.255
112.64.0.0-112.67.255.255
112.73.0.0-112.73.255.255
112.74.0.0-112.75.255.255
112.80.0.0-112.87.255.255
113.0.0.0-113.7.255.255
113.8.0.0-113.9.255.255
113.11.192.0-113.11.223.255
113.12.0.0-113.15.255.255
113.16.0.0-113.17.255.255
113.18.0.0-113.18.255.255
113.24.0.0-113.27.255.255
113.31.0.0-113.31.255.255
113.44.0.0-113.47.255.255
113.48.0.0-113.51.255.255
113.52.160.0-113.52.191.255
113.54.0.0-113.55.255.255
113.56.0.0-113.57.255.255
113.58.0.0-113.58.255.255
113.59.0.0-113.59.127.255
113.62.0.0-113.63.255.255
113.64.0.0-113.127.255.255
113.128.0.0-113.129.255.255
113.130.96.0-113.130.111.255
113.130.112.0-113.130.119.255
113.132.0.0-113.135.255.255
113.136.0.0-113.143.255.255
113.194.0.0-113.195.255.255
113.200.0.0-113.201.255.255
113.202.0.0-113.202.255.255
113.204.0.0-113.207.255.255
113.208.96.0-113.208.127.255
113.208.128.0-113.208.255.255
113.209.0.0-113.209.255.255
113.212.0.0-113.212.63.255
113.213.0.0-113.213.127.255
113.214.0.0-113.215.255.255
113.218.0.0-113.219.255.255
113.220.0.0-113.223.255.255
113.224.0.0-113.239.255.255
113.240.0.0-113.247.255.255
113.248.0.0-113.251.255.255
114.28.0.0-114.28.255.255
114.54.0.0-114.55.255.255
114.60.0.0-114.63.255.255
114.64.0.0-114.67.255.255
114.68.0.0-114.68.255.255
114.80.0.0-114.95.255.255
114.96.0.0-114.103.255.255
114.104.0.0-114.107.255.255
114.110.0.0-114.110.15.255
114.110.64.0-114.110.127.255
114.110.128.0-114.110.255.255
114.111.0.0-114.111.31.255
114.111.160.0-114.111.191.255
114.112.0.0-114.119.255.255
114.132.0.0-114.132.255.255
114.135.0.0-114.135.255.255
114.138.0.0-114.139.255.255
114.141.128.0-114.141.191.255
114.196.0.0-114.197.255.255
114.208.0.0-114.223.255.255
114.224.0.0-114.255.255.255
115.24.0.0-115.27.255.255
115.28.0.0-115.29.255.255
115.32.0.0-115.35.255.255
115.44.0.0-115.47.255.255
115.48.0.0-115.63.255.255
115.84.0.0-115.84.63.255
115.84.192.0-115.84.223.255
115.85.192.0-115.85.255.255
115.100.0.0-115.103.255.255
115.104.0.0-115.107.255.255
115.120.0.0-115.123.255.255
115.124.16.0-115.124.31.255
115.148.0.0-115.151.255.255
115.152.0.0-115.159.255.255
115.168.0.0-115.175.255.255
115.180.0.0-115.183.255.255
115.192.0.0-115.223.255.255
115.224.0.0-115.239.255.255
116.1.0.0-116.1.255.255
116.2.0.0-116.3.255.255
116.4.0.0-116.7.255.255
116.8.0.0-116.11.255.255
116.13.0.0-116.13.255.255
116.16.0.0-116.31.255.255
116.52.0.0-116.55.255.255
116.56.0.0-116.57.255.255
116.58.128.0-116.58.143.255
116.58.208.0-116.58.223.255
116.60.0.0-116.63.255.255
116.66.0.0-116.66.127.255
116.69.0.0-116.69.255.255
116.70.0.0-116.70.127.255
116.76.0.0-116.79.255.255
116.89.144.0-116.89.159.255
116.90.80.0-116.90.95.255
116.90.184.0-116.90.191.255
116.95.0.0-116.95.255.255
116.112.0.0-116.115.255.255
116.116.0.0-116.117.255.255
116.128.0.0-116.191.255.255
116.192.0.0-116.192.255.255
116.193.16.0-116.193.31.255
116.193.32.0-116.193.63.255
116.194.0.0-116.195.255.255
116.196.0.0-116.196.255.255
116.198.0.0-116.198.255.255
116.199.0.0-116.199.127.255
116.199.128.0-116.199.159.255
116.204.0.0-116.205.255.255
116.207.0.0-116.207.255.255
116.208.0.0-116.211.255.255
116.212.160.0-116.212.175.255
116.213.64.0-116.213.127.255
116.213.128.0-116.213.255.255
116.214.32.0-116.214.63.255
116.214.64.0-116.214.79.255
116.214.128.0-116.214.255.255
116.215.0.0-116.215.255.255
116.216.0.0-116.219.255.255
116.224.0.0-116.239.255.255
116.242.0.0-116.243.255.255
116.244.0.0-116.247.255.255
116.248.0.0-116.249.255.255
116.252.0.0-116.253.255.255
116.254.128.0-116.254.255.255
116.255.128.0-116.255.255.255
117.8.0.0-117.15.255.255
117.21.0.0-117.21.255.255
117.22.0.0-117.23.255.255
117.24.0.0-117.31.255.255
117.32.0.0-117.39.255.255
117.40.0.0-117.43.255.255
117.44.0.0-117.45.255.255
117.48.0.0-117.51.255.255
117.53.48.0-117.53.63.255
117.53.176.0-117.53.191.255
117.57.0.0-117.57.255.255
117.58.0.0-117.58.127.255
117.59.0.0-117.59.255.255
117.60.0.0-117.63.255.255
117.64.0.0-117.71.255.255
117.72.0.0-117.73.255.255
117.74.64.0-117.74.79.255
117.74.128.0-117.74.255.255
117.75.0.0-117.75.255.255
117.76.0.0-117.79.255.255
117.80.0.0-117.95.255.255
117.100.0.0-117.101.255.255
117.103.16.0-117.103.31.255
117.103.128.0-117.103.143.255
117.106.0.0-117.107.255.255
117.112.0.0-117.119.255.255
117.120.64.0-117.120.127.255
117.120.128.0-117.120.255.255
117.121.0.0-117.121.127.255
117.121.128.0-117.121.191.255
117.121.192.0-117.121.199.255
117.122.128.0-117.122.255.255
117.124.0.0-117.127.255.255
117.128.0.0-117.191.255.255
118.24.0.0-118.31.255.255
118.64.0.0-118.65.255.255
118.66.0.0-118.66.255.255
118.67.112.0-118.67.127.255
118.72.0.0-118.79.255.255
118.80.0.0-118.81.255.255
118.84.0.0-118.85.255.255
118.88.32.0-118.88.63.255
118.88.64.0-118.88.127.255
118.88.128.0-118.88.255.255
118.89.0.0-118.89.255.255
118.91.240.0-118.91.255.255
118.102.16.0-118.102.31.255
118.112.0.0-118.119.255.255
118.120.0.0-118.123.255.255
118.124.0.0-118.125.255.255
118.126.0.0-118.126.255.255
118.132.0.0-118.135.255.255
118.144.0.0-118.147.255.255
118.178.0.0-118.178.255.255
118.180.0.0-118.183.255.255
118.184.0.0-118.191.255.255
118.192.0.0-118.207.255.255
118.212.0.0-118.213.255.255
118.224.0.0-118.227.255.255
118.228.0.0-118.229.255.255
118.230.0.0-118.230.255.255
118.239.0.0-118.239.255.255
118.242.0.0-118.242.255.255
118.244.0.0-118.247.255.255
118.248.0.0-118.255.255.255
119.0.0.0-119.1.255.255
119.2.0.0-119.2.31.255
119.2.128.0-119.2.255.255
119.3.0.0-119.3.255.255
119.4.0.0-119.7.255.255
119.8.0.0-119.9.255.255
119.10.0.0-119.10.127.255

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# vi /etc/my.cnf
以下只列出my.cnf文件中[mysqld]段落中的内容，其他段落内容对MySQL运行性能影响甚微，因而姑且忽略。
  [mysqld]
  port = 3306
  serverid = 1
  socket = /tmp/mysql.sock
  skip-locking
  # 避免MySQL的外部锁定，减少出错几率增强稳定性。
  skip-name-resolve
禁止MySQL对外部连接进行DNS解析，使用这一选项可以消除MySQL进行DNS解析的时间。但需要注意，如果开启该选项，则所有远程主机连接授权都要使用IP地址方式，否则MySQL将无法正常处理连接请求！解决Mysql 大量 unauthenticated user 问题

back_log = 384
指定MySQL可能的连接数量。当MySQL主线程在很短的时间内接收到非常多的连接请求，该参数生效，主线程花费很短的时间检查连接并且启动一个新线程。
back_log参数的值指出在MySQL暂时停止响应新请求之前的短时间内多少个请求可以被存在堆栈中。 如果系统在一个短时间内有很多连接，则需要增大该参数的值，该参数值指定到来的TCP/IP连接的侦听队列的大小。不同的操作系统在这个队列大小上有它自己的限制。
试图设定back_log高于你的操作系统的限制将是无效的。默认值为50。对于Linux系统推荐设置为小于512的整数。

key_buffer_size = 256M
# key_buffer_size指定用于索引的缓冲区大小，增加它可得到更好的索引处理性能。
对于内存在4GB左右的服务器该参数可设置为256M或384M。
注意：该参数值设置的过大反而会是服务器整体效率降低！
max_allowed_packet = 4M
thread_stack = 256K
table_cache = 128K
sort_buffer_size = 6M
查询排序时所能使用的缓冲区大小。注意：该参数对应的分配内存是每连接独占！如果有100个连接，那么实际分配的总共排序缓冲区大小为100 × 6 ＝ 600MB。所以，对于内存在4GB左右的服务器推荐设置为6-8M。

read_buffer_size = 4M
读查询操作所能使用的缓冲区大小。和sort_buffer_size一样，该参数对应的分配内存也是每连接独享！

join_buffer_size = 8M
联合查询操作所能使用的缓冲区大小，和sort_buffer_size一样，该参数对应的分配内存也是每连接独享！

myisam_sort_buffer_size = 64M
table_cache = 512
thread_cache_size = 64
query_cache_size = 64M
指定MySQL查询缓冲区的大小。可以通过在MySQL控制台执行以下命令观察：
# > SHOW VARIABLES LIKE ‘%query_cache%’;
# > SHOW STATUS LIKE ‘Qcache%’;
# 如果Qcache_lowmem_prunes的值非常大，则表明经常出现缓冲不够的情况；
如果Qcache_hits的值非常大，则表明查询缓冲使用非常频繁，如果该值较小反而会影响效率，那么可以考虑不用查询缓冲；Qcache_free_blocks，如果该值非常大，则表明缓冲区中碎片很多。

tmp_table_size = 256M
max_connections = 768
指定MySQL允许的最大连接进程数。如果在访问论坛时经常出现Too Many Connections的错误提 示，则需要增大该参数值。

max_connect_errors = 10000000
wait_timeout = 10
指定一个请求的最大连接时间，对于4GB左右内存的服务器可以设置为5-10。

thread_concurrency = 8
该参数取值为服务器逻辑CPU数量×2，在本例中，服务器有2颗物理CPU，而每颗物理CPU又支持H.T超线程，所以实际取值为4 × 2 ＝ 8

skip-networking
开启该选项可以彻底关闭MySQL的TCP/IP连接方式，如果WEB服务器是以远程连接的方式访问MySQL数据库服务器则不要开启该选项！否则将无法正常连接！

IBM X31安装非原装无线网卡,开机报1802错误!
错误提示: 1802: Unauthorized network card is plugged in – Power off and remove the miniPCI network card.
1:首先打开键盘卸掉无线网卡
或者不拆机解决(如果X31已经升级到最新版本的BOIS,可以在BOIS设置里先禁用掉无线网卡)!原理一样
2:卸掉无线网卡后,就可以正常启动,接下我们要想办法进入到DOS下面(这里进DOS方法很多,我用的是最古老的方式,用USB软驱+98启动盘,其间居然旺旺上有朋友给我留言要买我这个USB软驱,50块包邮,只好婉言回绝,因为自从上次刷号,再到这次破解1802错误发现有时候软驱效率非常高…)
3:我是把破解小文件直接放在软盘里面的,直接A:>>JMP1802
4:关机,把无线网卡装上重新开机就不会报1802错误了
JMP1802.com破解文件下载地址