My previous post focused on using access-lists that we based upon Fully Qualified Domain Names. This recently has posed a solution for some works that have been undertaken. Even though it might seem quite straight forward to implement – there…

Network virtualization allows an abstraction from a physical topology. It takes the notion of a logical network further. Abstraction allows segregation of the routing table and can be used in a flexible way. The ability now to define a security…

I have managed to get the QEMU version of ASA running inside Ubuntu 12.04. Previously I have installed this on Windows and OSX. The trifecta will be complete with this post with the ASA running inside Ubuntu. Similar to the…

–Network Address Translation, ASA 8.2 NAT is required for a number of scenarios and can be used in the most unusual places. Most common is translation of a private RFC 1918 address into a globally routed public IP address. An…

–Routing on ASA– The ASA supports static and dynamic routing protocols. As of ASA code release 8.3+ most routing protocols are supported. OSPF, EIGRP, RIPv2, and static routing are the protocols the ASA can use. Static Routes Static routes are…

There are 101 security levels on the ASA. This may not be enough and you might be required to use the same security level a few times. We know that higher security level interfaces can talk pass traffic to lower…

OSPF is something that still mystifies me. I know it is a vast and large protocol and I do hope I can dispel something today for you. “Why do other areas need to connect to area 0?” Picture a tree. Nice big…

The importance of time should not be under estimated. NTP allows synchronisation of clock information across your network. I am labbing my ASA inside GNS3 and want to set up a router to be the Timekeeper! The idea of this firewall…