The "access-class in" command is indeed intended to control an IP-based management connection, such as Telnet or SSH. As such, it can only be used reasonably on "line vty", not on "line con 0".
The physical console is most often protected by a password or by a combination of username and password. In extreme cases, it can set up to not to start the command line interface but that would be quite an inconvenient configuration choice if something goes wrong.
The Cisco documentation on their website is very extensive. Regarding the IOS, I suggest starting with this link:
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...