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关于7206VXR路由器上如何防范BT
作者:佚名  文章来源:不详  点击数1935  更新时间:2007-5-18 3:15:14  文章录入:啊祖  责任编辑:啊祖

>  首先路由器的IOS版本满足条件(12.2(5)T以上)

  有几种方式:

  1、 对于BT完全限制 ( 见下例policy-map XX的不同部分)(采用NBAR)

  2、 对于BT的速率进行限制(见下例policy-map XX的不同部分)(采用NBAR)

  3、 通过优先级队列完成

  一、有地址转换的情况:

  ip nbar pdlm bootflash:bittorrent.pdlm (必须先启动)

  class-map match-all bt

  match protocol bittorrent

  !

  !

  policy-map bt1 (完全丢弃)

  class bt

  drop

  policy-map bt2 (速率限制)

  class bt

  police cir 50000

  conform-action transmit

  exceed-action drop

  policy-map bt3 (速率限制)

  class bt

  police cir 300000

  conform-action transmit

  exceed-action drop

  interface FastEthernet0/0

  ip address 192.168.34.240 255.255.255.0

  ip nat outside

  ip virtual-reassembly

  service-policy input bt3 (下载限制)

  service-policy output bt2 (上传限制)

  duplex full

  !

  interface FastEthernet1/0

  ip address 192.168.101.1 255.255.255.0

  ip nat inside

  ip virtual-reassembly

  duplex full

  !

  ip classless

  ip route 0.0.0.0 0.0.0.0 192.168.34.1

  !

  no ip http server

  !

  ip nat pool pool1 192.168.34.240 192.168.34.240 netmask 255.255.255.0

  ip nat inside source list 1 pool pool1 overload

  !

  access-list 1 permit any

  二、没有地址转换:

  ip nbar pdlm bootflash:/bittorrent.pdlm

  class-map match-all bt

  match protocol bittorrent

  !

  !

  policy-map bt2

  class bt

  police cir 160000

  conform-action transmit

  exceed-action drop

  policy-map bt3

  class bt

  police cir 240000 bc 60000 pir 350000

  conform-action transmit

  exceed-action drop

  policy-map bt1

  class bt

  drop

  !

  !

  !

  !

  interface Loopback0

  no ip address

  no ip route-cache

  !

  interface FastEthernet0/0

  ip address 192.168.101.1 255.255.255.0

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