如何禁止udp外发

如下脚本保存为bat批处理，运行即可。

:Created by 3a88.com
:DROP UDP Flood
@echo off
cls
for /f "delims=: tokens=1,2" %%a in ('ipconfig /all ^|findstr /i "DNS Server"') do (
set DNSIP=%%b
)
:新建IP安装策略禁止UDP
netsh ipsec static add policy name=禁止UDP description=允许DNS，拒绝其它UDP外出
:新建IP安全规则
netsh ipsec static add filterlist name=允许UDP
netsh ipsec static add filterlist name=拒绝UDP
:新建IP筛选器
netsh ipsec static add filter filterlist=允许UDP srcaddr=me dstaddr=%DNSIP% description=允许DNS查询 protocol=udp mirrored=yes dstport=53
netsh ipsec static add filter filterlist=拒绝UDP srcaddr=me dstaddr=any description=禁止UDP外出 protocol=udp mirrored=yes
:新建IP筛选器操作
netsh ipsec static add filteraction name=允许DNS查询 action=permit
netsh ipsec static add filteraction name=拒绝UDP外出 action=block
:封装策略
netsh ipsec static add rule name=允许规则 policy=禁止UDP filterlist=允许UDP filteraction=允许DNS查询
netsh ipsec static add rule name=拒绝规则 policy=禁止UDP filterlist=拒绝UDP filteraction=拒绝UDP外出
:应用IP安全策略
netsh ipsec static set policy name=禁止UDP assign=y
 

更新时间：2013-8-2