实例: 使能SYN Flood攻击防范功能
将SecBlade的G0/0.1子接口配置为Trust域,G0/0.2子接口配置为Untrust域,G0/0.3子接口配置为DMZ区。需要对DMZ域内的服务器进行SYN Flood攻击防范。
2. 组网图
3. 配置步骤
S8505(SecBlade)
# 划分VLAN
[S8505] vlan 10
[S8505-vlan10] quit
[S8505] vlan 30
[S8505-vlan30] quit
[S8505] vlan 50
[S8505-vlan50] quit
[S8505] vlan 60
[S8505-vlan60] quit
# 配置IP地址
[S8505] interface vlan-interface 10
[S8505-Vlan-interface10] ip address 10.0.0.254 24
[S8505-Vlan-interface10] quit
[S8505] interface vlan-interface 30
[S8505-Vlan-interface30] ip address 30.0.0.1 24
[S8505-Vlan-interface30] quit
# 配置静态路由
[S8505] ip route-static 0.0.0.0 0 30.0.0.254
# 配置SecBlade接口3GE聚合(SecBlade槽位号为2)
[S8505] secblade aggregation slot 2
# 建立SecBlade配置模块test
[S8505] secblade module test
# 指定SecBlade接口VLAN
[S8505-secblade-test] secblade-interface vlan-interface 30
# 设置需要保护的VLAN
[S8505-secblade-test] security-vlan 50 60
# 映射SecBlade配置模块到指定槽位的SecBlade插卡
[S8505-secblade-test] map to slot 2
[S8505-secblade-test] quit
[S8505] quit
# 登陆到指定槽位的SecBlade插卡
<S8505> secblade slot 2 (缺省用户名和密码为SecBlade)
user:SecBlade
password: SecBlade
<SecBlade> system
# 创建子接口
[SecBlade] interface g0/0.1
[SecBlade-GigabitEthernet0/0.1] vlan-type dot1q vid 30
[SecBlade-GigabitEthernet0/0.1] ip address 30.0.0.254 24
[SecBlade-GigabitEthernet0/0.1] quit
[SecBlade] interface g0/0.2
[SecBlade-GigabitEthernet0/0.2] vlan-type dot1q vid 50
[SecBlade-GigabitEthernet0/0.2] ip address 50.0.0.254 24
[SecBlade-GigabitEthernet0/0.2] quit
[SecBlade] interface g0/0.3
[SecBlade-GigabitEthernet0/0.3] vlan-type dot1q vid 60
[SecBlade-GigabitEthernet0/0.3] ip address 60.0.0.254 24
[SecBlade-GigabitEthernet0/0.3] quit
# 将内网子接口添加到Trust区域
[SecBlade] firewall zone trust
[SecBlade-zone-trust] add interface GigabitEthernet 0/0.1
[SecBlade-zone-trust] quit
# 将外网子接口添加到Untrust区域
[SecBlade] firewall zone untrust
[SecBlade-zone-untrust] add interface GigabitEthernet 0/0.2
[SecBlade-zone-untrust] quit
# 将GigabitEthernet0/0.3子接口添加到DMZ区域
[SecBlade] firewall zone DMZ
[SecBlade-zone-DMZ] add interface GigabitEthernet 0/0.3
[SecBlade-zone-DMZ] quit
# 配置静态路由
[SecBlade] ip route-static 10.0.0.0 24 30.0.0.1
# 使能DMZ域入方向的IP统计功能。
[SecBlade] firewall zone DMZ
[SecBlade-zone-DMZ] statistics enable ip inzone
[SecBlade-zone-DMZ] quit
# 打开SYN Flood攻击防范功能全局开关。
[SecBlade] firewall defend syn-flood enable
# 配置对服务器60.0.0.1进行SYN Flood攻击防范,配置SYN包的最大连接速率为500包/秒,最大半开连接数为2000个,手工启动TCP代理。
[SecBlade] firewall defend syn-flood ip 60.0.0.1 max-rate 500 max-number 2000 tcp-proxy on