The PEMODE password is calculated from the system serial number (CEC, 12 characters), current date, and a mutate table which is specific to the SE software main release version and MCL. The only "secret" part is the serial number ... I guess it was never intended to be a very secret method, but rather to avoid people damaging things.
Costin ________________________________ From: Charles Durrett <charles.durr...@gmail.com> To: IBM-MAIN@bama.ua.edu Sent: Wednesday, March 21, 2012 3:55 PM Subject: Re: Secret Service Guide On Saturday, March 17, 2012 10:11:20 AM UTC-5, R.S. wrote: > > MP3000 Service Guide is SY24-6155 - easily found online. It even has > > the default Support Element logon passwords - Woo-Hoo! > > Thank you for the hint. > > BTW: the passwords are well known and have "always" been documented. > Default passwords for HMC are: > SERVMODE for user SERVICE > PASSWORD for other documented users (*) > > There is also undocumented user PEMODE, I would like to know his > password, but AFAIK it's time and s/n dependent. PEMODE account is also present in a z890 Service Element - the signon panel 'leaks' enough information to tell if an account is setup on the machine. The variable password with the account *might* be implemented per the 1994 IBM US patent 5682475 - METHOD AND SYSTEM FOR VARIABLE PASSWORD ACCESS. If so then the password search space is narrowed. > > (*) I haven't checked two new (z196) Ensemble users > -- > Radoslaw Skorupka > Lodz, Poland > > > ... ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
