ciscoasa# show version 
  ciscoasa# show file system 
  ciscoasa# show flash, 
  ciscoasa# show disk0, 
  ciscoasa# dir flash:
  ciscoasa# dir disk0
  ciscoasa# show running-config 
  ciscoasa(config)# configure factory-default ## to restore the ASA to its factory default
  ciscoasa# write erase  ##  to remove the startup-config file from flash memory 	 
  ciscoasa# show start  
  ciscoasa# reload 

  ##Configuring ASA Settings and Interface Security Using the CLI
  ASA-Init(config)# hostname CCNAS-ASA
  CCNAS-ASA(config)# domain-name ccnasecurity.com
  CCNAS-ASA(config)# passwd cisco
  CCNAS-ASA(config)# enable password class
  CCNAS-ASA(config)# clock set 19:09:00 april 19 2015

  ##Configure the inside and outside interfaces
  CCNAS-ASA(config)# interface vlan 1 
  CCNAS-ASA(config-if)# nameif inside 
  CCNAS-ASA(config-if)# ip address 192.168.1.1 255.255.255.0 
  CCNAS-ASA(config-if)# security-level 100
  CCNAS-ASA(config-if)# interface vlan 2 
  CCNAS-ASA(config-if)# nameif outside 
  INFO: Security level for "outside" set to 0 by default. 
  CCNAS-ASA(config-if)# ip address 209.165.200.226 255.255.255.248 
  CCNAS-ASA(config-if)# no shutdown
  CCNAS-ASA# show interface e0/0
  CCNAS-ASA(config)# interface e0/1 
  CCNAS-ASA(config-if)# switchport access vlan 1 
  CCNAS-ASA(config-if)# no shutdown 
  CCNAS-ASA(config-if)# interface e0/0 
  CCNAS-ASA(config-if)# switchport access vlan 2 
  CCNAS-ASA(config-if)# no shutdown
  CCNAS-ASA(config)# show interface ip brief 
  CCNAS-ASA(config)# show ip address 
  CCNAS-ASA# show switch vlan 
  CCNAS-ASA# show run interface vlan 1 

  ##Add the inspection of ICMP traffic to the policy map list 
  CCNAS-ASA(config)# policy-map global_policy 
  CCNAS-ASA(config-pmap)# class inspection_default 
  CCNAS-ASA(config-pmap-c)# inspect icmp 
  CCNAS-ASA(config-pmap-c)# show run policy-map 
  
  Interface security-level notes: 
  You may receive a message that the security level for the inside interface was set automatically to 100, 
  and the outside interface was set to 0. The ASA uses interface security levels from 0 to 100 to enforce 
  the security policy. Security level 100 (inside) is the most secure and level 0 (outside) is the least secure. 
  By default, the ASA applies a policy where traffic from a higher security level interface to one with a lower 
  level is permitted and traffic from a lower security level interface to one with a higher security level is denied. 
  The ASA default security policy permits outbound traffic, which is inspected, by default. 
  Returning traffic is allowed due to stateful packet inspection. 
  This default “routed mode” firewall behavior of the ASA allows packets to be routed from the inside network 
  to the outside network, but not vice-versa. In Part 4 of this lab, you will configure NAT to increase the firewall protection.