路由器问题,请大家帮帮忙啊.

jmw7912

我的上网方式是华为MT800 ADSL MODEM(设置成桥接方式)+TP-LINK TR402M宽带路由器(使用TR402M拔号),可以正常浏览网页.
     后来,想将其中一台电脑作为WEB服务器,在TR402M上已经做好了虚拟服务器的端口映射.测试时发现:用本地的电脑可以正常访问该WEB服务器,而从外部网络则无法访问(有时多刷新几次会好).
    我在dos下用tracert命令测试,得到如下结果:
Tracing route to cachechengdu2.sohu.com [221.236.12.213]
over a maximum of 30 hops:
1 * * * Request timed out.
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
6 * * * Request timed out.
7 * * * Request timed out.
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 50ms 53ms 50ms 221.236.12.213
Trace complete.

谢谢各位了.