重庆分公司,新征程启航
为企业提供网站建设、域名注册、服务器等服务
R1在的配置 :
[R1]inter
[R1]interface e0/0/0
[R1-Ethernet0/0/0]ip add
[R1-Ethernet0/0/0]ip address 192.168.2.2 24
[R1]ip route-static 192.168.1.0 255.255.255.0 192.168.2.1 静态路由
开启虚拟终端服务
[R1]user-interface vty 0 4
[R1-ui-vty0-4]set authentication password
[R1-ui-vty0-4]set authentication password cipher 666
[R1-ui-vty0-4]user privilege level 3
R2的配置
[R2]interface e0/0/0
[R2-Ethernet0/0/0]ip add 192.168.1.2 24
[R2-Ethernet0/0/0]q
[R2]ip route-static 192.168.2.0 24 192.168.1.1
[R2]user-interface vty 0 4
[R2-ui-vty0-4]authentication-mode password
[R2-ui-vty0-4]set authentication password cipher 666
[R2-ui-vty0-4]user privilege level 3
防火墙配置
配置接口地址:
interface GigabitEthernet0/0/0
ip address 192.168.2.1 255.255.255.0
interface GigabitEthernet0/0/1
ip address 192.168.1.1 255.255.255.0
创建区域outside,设置优先级30, 并把接口G0/0/1加入到该区域
firewall zone name outside
set priority 30
add interface GigabitEthernet0/0/1
查看区域默认策略
[SRG]display policy interzone local outside outbound
policy interzone local outside outbound
firewall default packet-filter is permit
检测能否ping 通外部的路由器。是可以的。
更改默认策略
[SRG]firewall packet-filter default deny interzone local outside direction outbound
检测能否ping 通外部的路由器。是不可以的,
还原默认策略
[SRG]firewall packet-filter default permit interzone local outside direction outbound
检验 R1和R2能否 telnet 和ping 通 ,结果应该是不通。
怎么可以让R1telnet到R2上 并且ping 通,要放行trust 和outside 之间outbound方向流量 ,如下 :
放行outbound 方向telnet 和ICMP的流量
[SRG]policy interzone trust outside outbound
[SRG-policy-interzone-trust-outside-outbound]policy 1
[SRG-policy-interzone-trust-outside-outbound-1]policy source 192.168.2.2 0
[SRG-policy-interzone-trust-outside-outbound-1]policy destination 192.168.1.2 0
[SRG-policy-interzone-trust-outside-outbound-1]policy service service-set icmp telnet
[SRG-policy-interzone-trust-outside-outbound-1]action permit
[SRG-policy-interzone-trust-outside-outbound-1]q
[SRG-policy-interzone-trust-outside-outbound]q
用R1 去telnet R2,成功登录后来 在防火墙上查看会话表
[SRG]display firewall session table
Current Total Sessions : 1
icmp ×××:public --> public 192.168.2.2:53419-->192.168.1.2:2048
[SRG]display firewall session table
09:46:55 2018/05/11
Current Total Sessions : 0
请思考如何放行outside的主机telnet 到内部的路由器上????
另外有需要云服务器可以了解下创新互联scvps.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。