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ACL Configuration

The document outlines the basic configuration steps for two routers, Router1 and Router2, including setting IP addresses for interfaces and configuring static routes. It also details the setup of Access Control Lists (ACLs) to manage traffic permissions for specific PCs. The configuration includes both standard and extended ACLs to control ping, web, and telnet access for different PCs.

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Habtamu Asayto
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5 views2 pages

ACL Configuration

The document outlines the basic configuration steps for two routers, Router1 and Router2, including setting IP addresses for interfaces and configuring static routes. It also details the setup of Access Control Lists (ACLs) to manage traffic permissions for specific PCs. The configuration includes both standard and extended ACLs to control ping, web, and telnet access for different PCs.

Uploaded by

Habtamu Asayto
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as TXT, PDF, TXT or read online on Scribd
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Step 1: Basic Configuration

==========================
Router1
--------
Router>enable
Router#conf terminal
Router(config)#interface gigabitEthernet 0/0
Router(config-if)#ip address 192.168.1.1 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit

Router(config)#interface ser
Router(config)#interface serial 0/3/0
Router(config-if)#ip address 192.168.3.1 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit

Router2
--------
Router>enable
Router#configure terminal
Router(config)#interface gigabitEthernet 0/0
Router(config-if)#ip address 192.168.2.1 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit

Router(config)#interface serial 0/1/0


Router(config-if)#ip address 192.168.3.2 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit

Step 2: Configure static Route


==============================
Router1
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.3.2

Router2
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.3.1

Now browse 192.168.2.4 from pc 0

Step 4: Configure ACL


======================
a. Standard ACL
 Only PC1 is allowed to ping with Router2
Router1
Router(config)#access-list 1 permit 192.168.1.3 0.0.0.0 or
Router(config)#access-list 1 permit host 192.168.1.3
Router(config)#exit
Router#show access-lists

Router(config)#interface serial 0/3/0


Router(config-if)#ip access-group 1 out
Router(config-if)#exit

 Reset the above ACL configuration

Router(config)#no access-list 1
Router(config)#exit
Router#configure terminal
Router(config)#interface serial 0/3/0
Router(config-if)#no ip access-group 1 out
Router(config-if)#exit

b. Extended ACL
 Pc0 = ping + web, pc1 = ping + web +telnet, pc2= ping + web

Router1

Router(config)#access-list ?
<1-99> IP standard access list
<100-199> IP extended access list
Router(config)#access-list 100 permit tcp host 192.168.1.3 host 192.168.3.2 eq
telnet
Router(config)#access-list 100 deny tcp any any eq telnet
Router(config)#access-list 100 permit ip any any
Router(config)#exit

Router#configure terminal
Router(config)#interface serial 0/3/0
Router(config-if)#ip access-group 100 out
Router(config-if)#exit

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