NBAR是一種動態能在四到七層尋找協議的技術,它不但能做到普通ACL能做到那樣控制靜態的TCP UDP的報,也能做到控制一般ACLs不能做到動態的端口的那些協議(如BT)之類.
我就說說過程:
1到http://www.cisco.com/pcgi-bin/tablebuild.pl/pdlm 下載bittorrent.pdlm,(要CCO的)
2放到TFTP,然后用copy tftp disk2(大多數應該是flash)
拷到路由器中,
route7206#conf t
Enter configuration commands, one per line. End with CNTL/Z.
route7206(config)#ip nbar pdlm bittorrent.pdlm
route7206(config)#
!
ip nbar pdlm bittorrent.pdlm
!
1.) 創建一個 a class-map and policy map 并且把它應用到相應的端口:
得到關于BT的部分是
class-map match-all bittorrent
match protocol bittorrent
!
!
policy-map bittorrent-policy
class bittorrent
drop
!
interface GigabitEthernet0/2
description CONNECT INSIDE
ip address 192.168.168.1 255.255.255.252 secondary
ip address 192.168.21.1 255.255.255.0
ip nat inside
service-policy input bittorrent-policy
service-policy output bittorrent-policy
duplex full
speed 1000
media-type rj45
no negotiation auto
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