According to the IOS Feature Navigator, the following feature sets supports SSH server.
ADVANCED ENTERPRISE SERVICES
ADVANCED IP SERVICES
ADVANCED SECURITY
AISK9-AESK9 FEAT SET FACTORY UPG FOR BUNDLES
ASK9-AESK9 FEAT SET FACTORY UPG FOR BUNDLES
ASK9-AISK9 FEAT SET FACTORY UPG FOR BUNDLES
ENTERPRISE SERVICES
SP SERVICES
SPSK9-AESK9 FEAT SET FACTORY UPG FOR BUNDLES
SPSK9-AISK9 FEAT SET FACTORY UPG FOR BUNDLES
SPSK9-ESK9 FEAT SET FACTORY UPG FOR BUNDLES
Please use IOS Feature Navigator to see if your IOS feature set support a specific feature.
http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp
For more information on how to configure SSH on the VTY lines, please refer to the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123t/123t_7/gt_ssh2.htm
Hope this helps,
Regards,
Harold Ritter, CCIE #4168 (EI, SP)