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====== Cisco - Firewall - Cisco ASA 5505 - Connect to the Cisco ASA 5505 with Ubuntu ======

This Adaptive Security Appliance device is designed for SOHO and remote branches.  

It works out of the box with Ethernet 0/0 being the Outside Interface to the Internet (DHCP from ISP) and Inside Interfaces (Ethernet 0/1 to 0/7) are assigned IPs from DHCP (default 192.168.1.1/24).  The ASDM interface can be accessed from the 192.168.1.0 network.

8-port, 10/100 switch

  * Last two ports are PoE, which can be used by IP Phones or other PoE devices.
  * These are only Layer 2 ports.  You cannot configure Layer 3 IP address on each interface. Must use the "interface VLAN" command.
  * Your license determines how many active VLANs you can have.  The defaults: VLAN is Ethernet 0/0 and all other switch ports are VLAN1.
  * Ethernet 0/0 is the Outside interface (Internet) and the rest are trusted Inside interfaces (Ethernet 0/1 to Ethernet 0/7).
  * Base license allows you to configure 3 VLANs (Inside, Outside, DMZ). Security Plus license allows you to configure for failover redundancy, 20 VLANs, Trunk ports, no communication restrictions between VLANs.  Also supports Active/Standby (non-stateful) firewall failover redundancy and Backup ISP Connectivity (Dual ISP)

Attach the console cable to the serial port on your computer.  If your computer doesn't have a serial port, you’ll need a compatible usb-to-serial converter.

----

Get the minicom application:

<code bash>
sudo apt install minicom
</code>

  * Once done enter: minicom -s
  * Go to "Serial port setup"
  * Hit "E" to set baud to 9600 8N1 (option "C")
  * Hit "F" to change Hardware Flow Control to "No"
  * Hit "A" to change Serial Device to "/dev/ttyS0"
  * Go back to the main menu and hit "Save setup as dfl"
  * Then select “Exit minicom”
  * Now you should be back at the shell prompt.  Type "minicom" and you should be inside the ASA CLI.

{{:firewall:minicom-setup.png?800|}}