by David Bombal CCNA with kali linux

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参考资料:https://www.youtube.com/watch?v=K1bMSPje6pw&list=PLhfrWIlLOoKMe1Ue0IdeULQvEgCgQ3a1B&index=2

apt-get update
apt-get install yersinia
yersinia -h
yersinia -G

c2960-cg>en
sh run
在默认配置中,至少关闭不使用的端口,或放在单独VLAN中,或停止使用DTP之类的协议
show int g0/1 switchport
DTP协议:是cisco专有的协议
Administrative Mode: dynamic auto
Negotiation of Trunking: On

sh run int g0/1
sh run int g0/2
sh ip route
sh ip int brief
sh vlan
sh ip dhcp binding
sh cdp nei

yersinia
CDP泛洪 邻居表里面都是yersinia邻居
sh cdp traffic

sh spanning-tree
show vlan brief
sh spanning-tree ?
sh spanning-tree root

STP生成树
claiming Root Role






















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