For those of you who have been struggling integrating GNS3 with ASA as well as with JuniperOS , there is good news for you. Now, you can integrate GNS3 natively with ASA/Juniper OS using latest GNS3 release. This feature has been provided by integrating GNS3 with Qemu. Both JunOS as well as ASA can be simulated/emulated using Qemu. By integrating both together, you can emulate Cisco Routers/Juniper Routers and ASA all under one interface .
Here are the additional inks for your reference :