version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service compress-config
!
hostname C4-2_4506
!
enable password xxxxxxx!
clock timezone GMT 8
ip subnet-zero
no ip domain-lookup
!
ip dhcp snooping vlan 180-181 // 对哪些VLAN 进行限制
ip dhcp snooping
ip arp inspection vlan 180-181
ip arp inspection validate src-mac dst-mac ip
errdisable recovery cause udld
errdisable recovery cause bpduguard
errdisable recovery cause security-violation
errdisable recovery cause channel-misconfig
errdisable recovery cause pagp-flap
errdisable recovery cause dtp-flap
errdisable recovery cause link-flap
errdisable recovery cause l2ptguard
errdisable recovery cause psecure-violation
errdisable recovery cause gbic-invalid
errdisable recovery cause dhcp-rate-limit
errdisable recovery cause unicast-flood
errdisable recovery cause vmps
errdisable recovery cause arp-inspection
errdisable recovery interval 30
spanning-tree extend system-id
!
!
interface GigabitEthernet2/1 // 对该端口接入的用户进行限制,可以下联交换机
ip arp inspection limit rate 100
arp timeout 2
ip dhcp snooping limit rate 100
!
interface GigabitEthernet2/2
ip arp inspection limit rate 100
arp timeout 2
ip dhcp snooping limit rate 100
!
interface GigabitEthernet2/3
ip arp inspection limit rate 100
arp timeout 2
ip dhcp snooping limit rate 100
!
interface GigabitEthernet2/4
ip arp inspection limit rate 100
arp timeout 2
ip dhcp snooping limit rate 100
注:DHCP Snooping
DAI,Dynamic ARP Inspection
IP Source Guard
DHCP Interface Tracker (Option 82)
设备局限很大,3550-4000系列之间能用,用来防止基于内部的2层攻击,同一VLAN防止私自建立DHCP SERVER。
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