Cisco ASA 5505 Basic Configuration Tutorial

“Sponsored Links” The Cisco ASA 5505 Firewall is the smallest model in the new 5500 Cisco series of hardware appliances. Although this model is suitable for small businesses, branch offices or even home use, its firewall security capabilities are the same as the biggest models (5510, 5520, 5540 etc). The Adaptive Security technology of the […]

Cisco ASA 5540

Cisco ASA 5540 Features Next in the line is the Cisco ASA 5540 Firewall appliance. This device is geared towards large enterprises which need firewall throughput of 650Mbps. The ASA 5540 is the highest model that supports a Security Services Module (SSM) in order to offer Content Inspection or Intrusion Prevention IPS services to the […]

Cisco ASA 5520

Cisco ASA 5520 Features Continuing our series of posts about the hardware and software features of ASA firewalls, this article focuses on the Cisco ASA 5520 model. This model is suitable as Internet Edge device for medium size enterprises but can be used also for internal LAN segmentation. From this model and up there are […]

Cisco ASA 5510

Cisco ASA 5510 Features Continuing our series of posts about the hardware and software features of ASA firewalls, this article focuses on the Cisco ASA 5510 model which is a very popular appliance for small to medium enterprises. Unlike the ASA 5505, this is a rack-mountable model (1U size) which supports also an add-on module […]

Cisco ASA 5505

Cisco ASA 5505 Features In this post I’ll describe the software and hardware features of the Cisco ASA 5505 model. The ASA 5505 is the smallest model in the 5500 series and is suitable for small businesses or small branch offices and teleworkers. As it is a smaller size compared with the other models, it […]

The power of the Show Version command on Cisco ASA

Maybe the most popular and frequently used command on Cisco ASA firewalls is the one which shows the current running configuration, that is the “show run” command. However, maybe the most powerful command on Cisco ASA is the “show version” command. An example output of a show version command is shown below: CISCO-ASA#  show version […]

Connections and Translations on Cisco ASA Firewalls

In order to be able to monitor and troubleshoot your Cisco ASA firewall, you need to understand the difference between connections and translations. Refer to the diagram above for an explanation about Connections and Translations. A Connection works at the Transport Layer and includes the Source IP/Source Port and the Destination IP/Destination Port. Connections are […]

Cisco ASA Multiple Context Mode – Configuring Virtual Firewalls on Same Chassis

A single Cisco ASA appliance can be partitioned into multiple virtual firewalls known also as “Security Contexts”. Each security context acts as a separate firewall with its own security policy, interfaces and configuration. However, some features are not available for virtual firewalls, such as IPSEC and SSL VPN, Dynamic Routing Protocols, Multicast and Threat Detection. […]