Internet-Security.com TCP port 449 details

TCP port 449 is used by IBM i (AS/400, iSeries, System i) as the AS Server Mapper service (IANA service name: as-servermap).
IBM i client software—including IBM i Access Client Solutions (ACS), the legacy IBM Client Access/400, IBM Navigator for i, and IBM ODBC/JDBC/DRDA-based tools (e.g., DB2 clients)—contacts port 449 to discover the actual host server ports for services like database, file, remote command, and print.
In practice, these clients first connect to 449/tcp on the IBM i to obtain mappings, then open the appropriate service ports (commonly in the 8470–8476 range).
Administrators often allow 449/tcp through firewalls specifically to enable IBM i client connectivity and service discovery.

TCP 449