标准ACL的基本用法

实例一：标准ACL的基本用法

1.限制PC1访问服务器

2.访问控制列表应用在R2的S0/2/0的in方向

代码如下：

R1配置

en
conf t
hostname R1
 
int f0/0
ip address 192.168.1.254 255.255.255.0
no shutdown
exit
int f0/1
ip address 192.168.2.254 255.255.255.0
no shutdown
exit
int s0/2/0
ip address 192.168.3.254 255.255.255.0
no shutdown
clock rate 64000
exit
 
 
 
router rip
version 2
network 192.168.1.0
network 192.168.2.0
network 192.168.3.0
exit
 
end

R2配置

en
conf t
hostname R2
 
int s0/2/0
ip address 192.168.3.253 255.255.255.0
ip access-group 101 in
no shutdown
exit
 
int f0/0
ip address 192.168.4.254 255.255.255.0
no shutdown
exit
 
 
access-list 1 deny 192.168.1.0 0.0.0.255
access-list 1 permit any
 
 
 
 
 
router rip
version 2
network 192.168.3.0
network 192.168.4.0
exit
 
end

测试结果：PC1中ping不通

PC>ping 192.168.4.253

Pinging 192.168.4.253 with 32 bytes of data:

Reply from 192.168.3.253: Destination hostunreachable.

Ping statistics for 192.168.4.253:

Packets:Sent = 4, Received = 0, Lost = 4 (100% loss),

测试结果：PC2中ping通

PC>ping 192.168.4.253

Pinging 192.168.4.253 with 32 bytes of data:

Request timed out.

Reply from 192.168.4.253: bytes=32 time=3ms TTL=126

Reply from 192.168.4.253: bytes=32 time=1ms TTL=126

Reply from 192.168.4.253: bytes=32 time=2ms TTL=126

Ping statistics for 192.168.4.253:

Packets:Sent = 4, Received = 3, Lost = 1 (25% loss),

Approximate round trip times in milli-seconds:

Minimum =1ms, Maximum = 3ms, Average = 2ms

结果分析：访问列表设置成功，并成功起到过滤作用

来源：CSDN

作者：路痴的旅行

链接：https://blog.csdn.net/u011857683/article/details/48980299

标签

ping

shutdown

bytes

acl