Yes, the ASA will log when a user/admin logs in/out
Check this example, I am connecting via SSH with my admin user fcoto:
%ASA-6-113012: AAA user authentication Successful : local database : user = fcoto %ASA-6-113008: AAA transaction status ACCEPT : user = fcoto %ASA-6-611101: User authentication succeeded: Uname: fcoto %ASA-6-611101: User authentication succeeded: Uname: fcoto %ASA-6-605005: Login permitted from x.x.x.x/2826 to outside:y.y.y.y/ssh for user "fcoto"
Then, as soon as I enter privilege mode, I change privilege and got this message:
%ASA-5-502103: User priv level changed: Uname: enable_15 From: 1 To: 15
The above logs you can configure them to just get them, or you will see them as part of the logs (depending on the severity level that you configure).
You can choose to just see some logs, to change the severity of these messages, to send them to a syslog server, etc.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...