Wireless Network Security: Filtering the MAC address
Documenting Your Cisco Network Configuration with CDP
Cisco Switch Monitoring with Web Console

Cisco Networking: Show Version Command on a Firewall

Issuing the show version command on a Cisco Adaptive Security Appliance (ASA), often called a network firewall displays information unique to that type of hardware. Look at the output of the show version command on a firewall and take note of the following information:

  • IOS version

  • Name of the image file

  • System uptime

  • Type of processor and hardware platform

  • Amount of RAM

  • Amount of flash memory

  • MAC address

  • Number of ports on the switch

  • Licensed features

  • Serial number

  • Current configuration register

Here is what the show version command displays for an ASA:

ciscoasa> show version
Cisco Adaptive Security Appliance Software Version 8.2(1)11
Device Manager Version 6.2(3)
Compiled on Mon 21-Sep-09 17:47 by builders
System image file is "disk0:/asa821-11-k8.bin"
Config file at boot was "startup-config"
ciscoasa up 28 mins 4 secs
Hardware:   ASA5505, 256 MB RAM, CPU Geode 500 MHz
Internal ATA Compact Flash, 128MB
BIOS Flash M50FW080 @ 0xffe00000, 1024KB
Encryption hardware device : Cisco ASA-5505 on-board accelerator (revision 0x0)
                             Boot microcode   : CN1000-MC-BOOT-2.00
                             SSL/IKE microcode: CNLite-MC-SSLm-PLUS-2.03
                             IPSec microcode  : CNlite-MC-IPSECm-MAIN-2.04
 0: Int: Internal-Data0/0    : address is 001f.ca8c.93da, irq 11
 1: Ext: Ethernet0/0         : address is 001f.ca8c.93d2, irq 255
 2: Ext: Ethernet0/1         : address is 001f.ca8c.93d3, irq 255
 3: Ext: Ethernet0/2         : address is 001f.ca8c.93d4, irq 255
 4: Ext: Ethernet0/3         : address is 001f.ca8c.93d5, irq 255
 5: Ext: Ethernet0/4         : address is 001f.ca8c.93d6, irq 255
 6: Ext: Ethernet0/5         : address is 001f.ca8c.93d7, irq 255
 7: Ext: Ethernet0/6         : address is 001f.ca8c.93d8, irq 255
 8: Ext: Ethernet0/7         : address is 001f.ca8c.93d9, irq 255
 9: Int: Internal-Data0/1    : address is 0000.0003.0002, irq 255
10: Int: Not used            : irq 255
11: Int: Not used            : irq 255
Licensed features for this platform:
Maximum Physical Interfaces    : 8
VLANs                          : 20, DMZ Unrestricted
Inside Hosts                   : Unlimited
Failover                       : Active/Standby
VPN-DES                        : Enabled
VPN-3DES-AES                   : Enabled
SSL VPN Peers                  : 2
Total VPN Peers                : 25
Dual ISPs                      : Enabled
VLAN Trunk Ports               : 8
Shared License                 : Disabled
AnyConnect for Mobile          : Disabled
AnyConnect for Cisco VPN Phone : Disabled
AnyConnect Essentials          : Disabled
Advanced Endpoint Assessment   : Disabled
UC Phone Proxy Sessions        : 2
Total UC Proxy Sessions        : 2
Botnet Traffic Filter          : Disabled
This platform has an ASA 5505 Security Plus license.
Serial Number: JMX1214Z0LF
Running Activation Key: 0xe6135258 0xe84c9b0d 0x6c501544 0x90d4f8d0 0x400ab69d
Configuration register is 0x1
Configuration has not been modified since last system restart.
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