The interfaces file contains network and security information for servers.
The interfaces file is located in $SYBASE/SYBASE_REP/interfaces in UNIX, or %SYBASE%\ini\sql.ini in Windows. If you use network security, you must include a secmech line that gives the global identifiers of supported security services. Supported security mechanisms are listed by their OIDs. Multiple security mechanisms are separated by commas.
# server_principal_user_name query tcp ether plum 1050 master tcp ether plum 1050 secmech 1.3.6.1.4.1.897.4.6.1