Tham khảo tài liệu 'hack sun book hack proofing sun solaris phần 2', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Introducing Solaris Security Evaluating Your Risk Chapter 1 19 Table Guidelines for User Password Selections Excellent Password Choices Use at least 8 characters. Use a combination of uppercase lowercase numerics and punctuation. Use an uncommon misspelling of a common word. Use embedded words such as diCOLAet for diet cola. Use interleaved words such as DcloElTa for diet cola. Poor Password Choices Use 6 characters or less. Use some combination of the user or user s family member s name birthday or telephone number. Are based on dictionary words for English or any other common language. Include pop culture references such as actors or characters names for television shows. Use published password examples such as any sample passwords listed in this table. Because Solaris uses shadowed passwords by default administrators of Solaris systems have a number of options available for use in their password following line is a sample of an etc shadow entry using the default password configurations followed by a field listing of the etc shadow file SCarter TAcRZSaPcoq02 11541 username password lastchg min max warn inactive expire flag By default Solaris only tracks the time at which the password was last changed which is a UNIX datetime format that specifies the number of days between January 1 1970 and the day the password was last commands most often used for password management are passwd useradd and describes the fields unused by the example and the switches used by common commands to manipulate these fields. Table Switches Used by Common Commands to Manipulate the Unused Fields Field Passwd Switch Useradd Switch Usermod Switch Description min -n N A N A Minimum number of days before a password can be users from changing a password back to the old password immediately. Continued 20 Chapter 1 Introducing Solaris Security Evaluating Your Risk Table Continued Field Passwd Switch Useradd
