Basic Configurations And ASA Topology On GNS3 For Labs

STEP 1: 

Configure the Topology as defined below For ASA Labs .

Start the Console and begin the Basic Configurations. To Sync the Topology and all routers and ASA will be Ping able. After configure the basic Configurations.

In my case. I am using 3 routers, Name as OUTSIDE, INSIDE and DMZ and one ASA Firewall. To configure the basic configurations.

Networks I am using with /8 subnet For OUTSIDE AND DMZ.

For INSIDE With /24 Subnet.

STEP 2:

Configurations on ASA Firewaall:

For Outside Router:

ASA(config)# int e0/0

ASA(config-if)# ip address 10.1.1.1 255.0.0.0

ASA(config-if)# nameif outside

ASA(config-if)# security-level 0

ASA(config-if)# no shutdown

For Inside Router:

ASA(config-if)# int e0/1

ASA(config-if)# ip address 192.168.1.1 255.255.255.0

ASA(config-if)# nameif inside

ASA(config-if)# security-level 100

ASA(config-if)# no shutdown

For DMZ Router:

ASA(config-if)# int e0/2

ASA(config-if)# ip address 12.1.1.1 255.0.0.0

ASA(config-if)# nameif DMZ

ASA(config-if)# security-level 50

ASA(config-if)# no shutdown

STEP 3:

Configurations on INSIDE Router:

INSIDE(config)#int fa0/0                          

INSIDE(config-if)#ip address 192.168.1.2 255.255.255.0

INSIDE(config-if)#no shutdown

STEP 4:

Configurations on OUTSIDE Router:

OUTSIDE(config)#int fa0/0

OUTSIDE(config-if)#ip address 10.1.1.2 255.0.0.0

OUTSIDE(config-if)#no shutdown

STEP 4:

Configurations on DMZ Router:

DMZ(config)#int fa0/0

DMZ(config-if)#ip address 12.1.1.2 255.0.0.0

DMZ(config-if)#no shutdown

Now Verify the all Links Connectivity for all the Routers.

Go to ASA Firewall Console and Ping Ip Address Outside, Inside and DMZ respectively.

YOU ARE DONE..!!