限速∶
access-list 130 remark bt
access-list 130 permit tcp any any range 6881 6890
access-list 130 permit tcp any range 6881 6890 any

rate-limit input access-group 130 712000 8000 8000 conform-action transmit exceed-action drop
rate-limit output access-group 130 712000 8000 8000 conform-action transmit exceed-action drop

禁止∶
access-list 130 deny tcp any any range 6881 6890 access-list 130 deny tcp any range 6881 6890 any

ip access-group 130 in / out
不过有的bt软件，再封锁后会自动改端口

转载地址：http://www.netsp.com.cn/Article/config/cisco/router/200609/20060905153310.html