The Split Personality of OS/400 - Revision history

PoC: Where

2023-05-11T08:24:11Z

Where

← Older revision		Revision as of 10:24, 11 May 2023
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	'''The split personality of OS/400''' is a somewhat exaggerated short statement that OS/400 implements an UNIX-Shell since early versions. This ''qsh'' provides a limited runtime environment borrowed from AIX. There are some basic UNIX tools available, like ''ls'', ''find'' and so on.		'''The split personality of OS/400''' is a somewhat exaggerated short statement that OS/400 implements an UNIX-Shell since early versions. This ''qsh'' provides a limited runtime environment borrowed from AIX. There are some basic UNIX tools available, like ''ls'', ''find'' and so on.

	This limited shell can be expanded to a more sophisticated environment thru the installation of [[wikipedia:IBM_i#PASE\|PASE]]. With this installation also comes a ''ssh''-Server. This leads to to a funny side effect:		This limited shell can be expanded to a more sophisticated environment thru the installation of [[wikipedia:IBM_i#PASE\|PASE]]. With this installation also comes a ''ssh''-Server on newer OS releases. This leads to to a funny side effect:
	* When you ''telnet'' to an AS/400, you get the classic AS/400 signon screen with the classic menu- and forms-driven environment,		* When you ''telnet'' to an AS/400, you get the classic AS/400 signon screen with the classic menu- and forms-driven environment,
	* When you ''ssh'' to an AS/400 you will be directed to an UNIX shell, within the PASE environment.		* When you ''ssh'' to an AS/400 you will be directed to an UNIX shell, within the PASE environment.

PoC: +Cat

2020-03-15T15:45:43Z

+Cat

← Older revision		Revision as of 17:45, 15 March 2020
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	[[Category: Basic Knowledge]]		[[Category: Basic Knowledge]]
			[[Category: Musings]]

PoC: De-whichified

2020-03-12T22:06:59Z

De-whichified

← Older revision		Revision as of 00:06, 13 March 2020
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	== Security implications ==		== Security implications ==
	While the classical side of OS/400 (and z/OS) implement many security-enhancing measures ~~which~~ make it difficult to exploit a properly installed and configured machine, the more and more prevalent availability of PASE (and it's z/OS equivalent) with a multitude of available [[wikipedia:Open-source_software\|OSS]] tools expose an increasing surface for threats.		While the classical side of OS/400 (and z/OS) implement many security-enhancing measures that make it difficult to exploit a properly installed and configured machine, the more and more prevalent availability of PASE (and it's z/OS equivalent) with a multitude of available [[wikipedia:Open-source_software\|OSS]] tools expose an increasing surface for threats.

	[[Category: Basic Knowledge]]		[[Category: Basic Knowledge]]

PoC at 17:21, 31 December 2018

2018-12-31T17:21:59Z

← Older revision		Revision as of 19:21, 31 December 2018
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	== Security implications ==		== Security implications ==
	While the classical side of OS/400 (and z/OS) implement many security-enhancing measures which make it difficult to exploit a properly installed and configured machine, the more and more prevalent availability of PASE (and it's z/OS equivalent) with a multitude of available [[wikipedia:Open-source_software\|OSS]] tools expose an increasing surface for threats.		While the classical side of OS/400 (and z/OS) implement many security-enhancing measures which make it difficult to exploit a properly installed and configured machine, the more and more prevalent availability of PASE (and it's z/OS equivalent) with a multitude of available [[wikipedia:Open-source_software\|OSS]] tools expose an increasing surface for threats.

			[[Category: Basic Knowledge]]

PoC: PoC moved page The split personality of OS/400 to The Split Personality of OS/400 without leaving a redirect: Nicer Caps

2018-05-06T21:02:30Z

PoC moved page The split personality of OS/400 to The Split Personality of OS/400 without leaving a redirect: Nicer Caps

New page

'''The split personality of OS/400''' is a somewhat exaggerated short statement that OS/400 implements an UNIX-Shell since early versions. This ''qsh'' provides a limited runtime environment borrowed from AIX. There are some basic UNIX tools available, like ''ls'', ''find'' and so on.

This limited shell can be expanded to a more sophisticated environment thru the installation of [[wikipedia:IBM_i#PASE|PASE]]. With this installation also comes a ''ssh''-Server. This leads to to a funny side effect:
* When you ''telnet'' to an AS/400, you get the classic AS/400 signon screen with the classic menu- and forms-driven environment,
* When you ''ssh'' to an AS/400 you will be directed to an UNIX shell, within the PASE environment.

== Security implications ==
While the classical side of OS/400 (and z/OS) implement many security-enhancing measures which make it difficult to exploit a properly installed and configured machine, the more and more prevalent availability of PASE (and it's z/OS equivalent) with a multitude of available [[wikipedia:Open-source_software|OSS]] tools expose an increasing surface for threats.