Saturday, November 23, 2013

Using Transparent Firewall Mode on an ASA

›
An ASA can be configured to operate in transparent firewall mode, such that it appears to operate as a Layer 2 device, without becoming a ro...
Saturday, November 9, 2013

Detecting and Filtering Botnet Traffic on an ASA

›
In a botnet attack, hosts on the private side of an ASA becomes infected with malware. Each of the infected hosts tries to contact a botnet ...
Sunday, October 27, 2013

Controlling Bandwidth on an ASA: Traffic Policing and Shaping

›
You can leverage two ASA features to control or limit the amount of bandwidth used by specific traffic flows: * Traffic policing * Traff...
Saturday, October 19, 2013

Configuring Virtual Firewall on an ASA

›
Limitations Here are some important limitations regarding virtual firewalls on a Cisco ASA: * Key features that are unsupported on a Ci...
Saturday, October 12, 2013

Configuring Access Control List (ACL) on an ASA

›
The access control list (ACL) is the very heart of every ASA device. The ASA provides an administrator with a full-featured set of access co...
Saturday, October 5, 2013

New NAT Options in IOS Versions 8.3 and Later

›
* One significant change in NAT with software versions 8.3 and higher is that NAT control (enforcing use of NAT) is no longer a supported.  ...
Saturday, September 28, 2013

Configuring Dynamic Inside PAT on an ASA (pre-8.3)

›
There are four pieces of information necessary for an ASA to perform NAT: * Original source IP address (and port) in the packet * Interf...