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This is a good sign. It shows that John Carr has really helped to get the word out about the AS/400. It used to be that the only AS/400 hacker information on the net was the default passwords that the AS/400 comes with. Eric Kempter CommAir Mechanical Services, Inc. -----Original Message----- From: Jim Welsh [SMTP:jimwelsh@ix.netcom.com] Sent: Tuesday, November 10, 1998 7:34 PM To: MIDRANGE-L@midrange.com Subject: Hacker site featuring AS/400... http://www.genocide2600.com/~tattooman/b4b0/b4b0-5/b4b0-5.txt > Introduction to AS/400 Computing > Part 1 - Very Basic Concepts > tymat@b4b0.org > > I. Key Features of the AS/400 > > AS/400 is a computer platform made by IBM that runs the OS/400 Operating > System. The three key features of the AS/400 are: > > 1) Integrated Applications - software components such as relational database > programs, security software, internet applications, and programming > environment are part of the Operating System. > 2) High Availability - like most IBM computing systems (like AIX) the AS/400 > is considered as a high availability system by which most major changes > to the system do not require an IPL (Initial Program Load or a reboot). > 3) Multiprocessor - an AS/400 machine can have many different processors > separate from the system processor which is responsible for a > particular I/O device. Figure 1.1 shows a typical AS/400 configuration. > > Figure 1.1 > > ____________________ > | System Processor | // New models of the AS/400 can have > |__________________| // up to 12 64bit processors > | > | > ____________|_____________ > | System Main Bus | > |________________________| > / \ > / \ > _____|___________ ________|________ > | I/O Interface | | I/O Interface | > |_______________| |_______________| > | | > ______|________ ________|______ > | SPD I/O Bus | | PCI I/O Bus | > |_____________| |_____________| > / \ > Devices...... Integrated > PC Server > - Novell > - Lotus Domino > - Windows NT > - PC TCP/IP Stack // This is independent of > - TCP/IP Firewall // OS/400s own TCP/IP stack > - Proxy Server // and vice-versa. > - Lotus Domino SMTP Mail > > Other key features that make the AS/400 an attractive platform to many > business are: > > 4) Single Level Storage Technology - Programs work with objects and object > names so hardware is always accessed by name and not by its address. > 5) Large Address Size - With a 64bit addressing space, the AS/400 can address > up to 18.4 quintillion bytes. > 6) Fully Object Oriented - All system resources, such as data structures, are > packaged within an object. This means that AS/400 instructions can > only work on what they are supposed to work on so data will never be > treated as executable code. > 7) Internet Ready - New AS/400 systems have full internet capabilities which > allows AS/400 machines to act as web servers (with full SSL > capabilities). > 8) Robust Programming Environment - OS/400 comes with several different > programming environments such as CL (Control Language), ILE, COBOL, RPG > III & IV, and Java > > II. TCP/IP Connectivity > > The AS/400 supports many different TCP/IP application protocols such as FTP, > SMTP, Telnet, and network printing. The AS/400 has a complete implementation > of the sockets API which are all integrated into OS/400. > > The AS/400 supports many different network interfaces ranging from token ring, > ethernet, x.25, frame relay, fiber distributed digital interface, and > serial. > > III. File Structures > > There are 10 different file structures which are divided into 5 main categories. > Each file structure has a corresponding CRTxxxF command which is used to create > these files. Figure 3.1 is a chart which summarizes these file types. > > Figure 3.1 > > File Type Subtype File Description Create Command > > Database File PF Physical File CRTPF > LF Logical File CRTLF > Source File PF Physical Source File CRTSRCPF > Device File DSPF Workstation Display File CRTDSPF > PRTF Printer File CRTPRTF > TAPF Tape File CRTTAPF > DKTF Diskette File CRTDKTF > ICFF Intersystem Communications CRTICFF > Function File > DDM File DDMF Distributed Data Management CRTDDMF > File > Save File SAVF Save File CRTSAVF > > > Ok, that's it for this issue. From now on there will be an AS/400 related > article in every issue of B4B0 and each will depend on previous AS/400 > articles released in this zine. The purpose of these beginner-level > articles is to get the reader up to speed on AS/400 basics so in the near > future I will be able to discuss an overview of AS/400 security and > probably base these articles for more in-depth lectures on AS/400 security > and programming in the future. It is quite sad but 99% of B4B0 readers > have no clue about AS/400 and if I started discussing advanced AS/400 topics > it would only go to waste. > > Next issue we will tackle more about file structures and then I will start > discussing more user-level related tasks such as maneuvering the OS/400 > menu system and customizing commands. > We might want to keep an eye on these guys... ;> -- Jim http://www.netcom.com/~jimwelsh/welcome/welcome.html mailto:jimwelsh@ix.netcom.com +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to MIDRANGE-L@midrange.com. | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +--- +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to MIDRANGE-L@midrange.com. | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +---
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