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Operating Systems AIX Securing AIX - Hardening Lesson 101 Post 302772833 by MichaelFelt on Wednesday 27th of February 2013 01:58:40 AM
Old 02-27-2013
Now is a good time to look at so-called Role Based Access Control solutions - aka RBAC, rather than sudo. IT audit requirements are moving in this direction.
If you go sudo - it is not enough to install it and let everyone just sudo su -.

And be sure and define a seperate group, no files in it, only admins, with are allowed to su to root (sugroups setting for root is the name of this group, default is keyword ALL - meaning any group is accepted)

AIX supplies ssh on the DVD with AIX 6.1 and AIX 7.1, no additional download needed.

Big plus on suggestion to setup non-rootvg filesystems (i.e., not just a seperate filesystem, but have an additional volume group for these items, so that "rootvg" can be replaced (e.g., fresh install) and you will not lose any vital configuration information by accident. Not saying the steps to "replace" rootvg are simple, but this is much simplier than losing the info, or having to extract outdated information from an "ancient" mksysb backup file.

edit motd: yes, but a standard message for all systems - best practice seems to be to mention that only authorized users are permitted, and actions may be logged. Proceding implies consent and other "legal stuff".

Important change: change the pwd_algorithm setting (none set, so crypt by default) in /etc/security/login.cfg

All the other edits, disabling programs, root login, etc. - just use
# aixpert -l h (or #aixpert -l high)
 

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mtailrc(5)							   User Manuals 							mtailrc(5)

NAME
mtailrc - Configuration file for monkeytail DESCRIPTION
A monkeytail configuration uses Apache-style syntax to declare "groups" of files to be tailed. Best explained with an example: <group testgroup> prefix 'server2: ' sudo yes <file> filename /var/log/apache2/access.log prefix 'server1: ' host server1.example.com </file> <file> filename /var/log/apache2/access.log host server2.example.com sudo no </file> </group> OPTIONS
All options can be either put inside a group or file block. Options inside a file block override those in the group block. filename filename filename defines the filename for this block. host remote-host (optional) host defines that this block's file is to be tailed on a remote server. sudo yes|no|1|0 sudo is a boolean specifying whether this file should be tailed as root. This option is supported for both local and remote files (in both cases you will potentially be prompted for your password). prefix "string: " prefix allows you to specify a short string that will be prepended to every line that is displayed for that given file. FILES
~/.mtailrc - user specific monkeytail config SEE ALSO
mtail(1), tail(1) AUTHOR
Martyn Smith <martyn@dollyfish.net.nz> mtail May 2008 mtailrc(5)
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