It depends on your security policies and requirements.
You can secure access to the terminal server so that only certain staff can access this device. This in turn limits the people who can access your ASA. You can also log who accessed the device and when and what they did when they connected to the ASA.
However by connecting a modem directly to the ASA you have none of these security features available.
For a large organisation I think this would be something you would only use as a temporary measure to fix a short term problem rather than leave in place permanently.
BenefitsDocumentationPrerequisiteImage Download LinksLimitationsSupported PlatformsLicense RequirementsTopologyStep-By-Step ConfigurationConfigure Virtual ServiceActivate the virtual service and configure guest IPsConfiguring UTD (Service Plane)Configurin...
Login to the FXOS chassis manager.
Direct your browser to https://hostname/, and log-in using the user-name and password.
Go to Help > About and check the current version:
Check the current version availa...
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...