电脑上网变得好慢，有以下的情况，请问是什么问题？
1 我打开百度首页，浏览器经常提示，正在发送请求。半天才上，或者直接上不了，打开的网页不敢刷新，怕过一下出不来.
2 我的问公司的网管，他在路由器那里看了，说我超过了最大连接数，所以上网很卡，叫我把Foxmail 之类的东西关掉。
3 我自己用 Netstat 看了我的端口，发现经常有一段连续的端口，如 211X 到 219X的端口连着好几个相同IP的 http端口，状态是以下 SYN_SENT,LAST_ACK，ESTABLISHED或者其他FIN_WAIT_1之类（也可能是其他端口）
4 我上网查了一下，这个好象是DDOS攻击，我下了一个叫冰盾，可能没有用，他里面有一个网卡的选项，我点了一下下拉框，一个网卡没有出来。

以下是我自己用netstat 输出的文字，红色就是我说的地方。

  Proto Local Address Foreign Address State
  TCP liuxiaosheng:epmap liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:microsoft-ds liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:902 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:912 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:1051 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:3389 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:16992 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:16993 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:1028 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:1034 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:1049 liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:netbios-ssn liuxiaosheng:0 LISTENING
  TCP liuxiaosheng:1035 123.58.181.240:https ESTABLISHED
  TCP liuxiaosheng:1050 121.14.231.55:http CLOSE_WAIT
  TCP liuxiaosheng:1058 123.58.182.13:http CLOSE_WAIT
  TCP liuxiaosheng:1423 hx-in-f125.1e100.net:5222 ESTABLISHED
  TCP liuxiaosheng:1983 58.63.236.237:http LAST_ACK
  TCP liuxiaosheng:2024 58.63.236.237:http LAST_ACK
  TCP liuxiaosheng:2025 58.63.236.237:http LAST_ACK
  TCP liuxiaosheng:2063 58.63.236.237:http LAST_ACK
  TCP liuxiaosheng:2127 220.181.66.82:http TIME_WAIT
TCP liuxiaosheng:2142 121.14.35.168:http ESTABLISHED
TCP liuxiaosheng:2152 58.63.236.254:http ESTABLISHED
TCP liuxiaosheng:2163 58.63.237.200:http ESTABLISHED
TCP liuxiaosheng:2164 58.63.238.222:http CLOSE_WAIT
TCP liuxiaosheng:2165 58.63.236.237:http ESTABLISHED
TCP liuxiaosheng:2166 58.63.237.200:http ESTABLISHED
TCP liuxiaosheng:2167 58.63.236.237:http ESTABLISHED
TCP liuxiaosheng:2168 58.63.238.222:http CLOSE_WAIT
TCP liuxiaosheng:2169 58.63.238.222:http CLOSE_WAIT
TCP liuxiaosheng:2171 180.149.139.253:http ESTABLISHED
TCP liuxiaosheng:2172 58.63.237.200:http ESTABLISHED
TCP liuxiaosheng:2173 58.63.238.222:http CLOSE_WAIT
TCP liuxiaosheng:2175 58.63.238.222:http CLOSE_WAIT
TCP liuxiaosheng:2176 58.63.238.222:http CLOSE_WAIT
TCP liuxiaosheng:2178 58.63.238.222:http CLOSE_WAIT
TCP liuxiaosheng:2179 180.153.23.240:http ESTABLISHED
TCP liuxiaosheng:2185 58.63.238.222:http ESTABLISHED
TCP liuxiaosheng:2186 58.63.238.222:http ESTABLISHED
TCP liuxiaosheng:2187 58.63.238.222:http ESTABLISHED
TCP liuxiaosheng:2188 58.63.238.222:http ESTABLISHED
TCP liuxiaosheng:2189 58.63.236.236:http ESTABLISHED
TCP liuxiaosheng:2190 58.63.236.237:http ESTABLISHED
TCP liuxiaosheng:2191 58.63.236.237:http ESTABLISHED
TCP liuxiaosheng:2192 58.63.236.237:http ESTABLISHED
TCP liuxiaosheng:2193 58.63.236.237:http ESTABLISHED
TCP liuxiaosheng:2194 58.63.236.237:http SYN_SENT
TCP liuxiaosheng:2195 58.63.236.23