I am new with GNS3, I used to work with packet tracer but now i want to test ASA which is not included in packet tracer software!
Actually i would like to know how can I get started with GNS! i guess it needs an IOS! where can i download ASA IOS for free just to make a test!
anyone can help me step by step how can I start with GNS and where can I download the IOS!