06-26-2015
AIX has at least 3 logging facilities and 1 auditing facility.
Logging facilities are:
- syslog
- errlog
- alog
All 3 facilities make a little different things. Through alog you can see e.g. boot-time or console messages. Errlog logs mostly hardware-related messages. Syslog is a standard UNIX logging mechanism.
If you do a security assessment, the usual question is - what must be logged in your branch and in your country? There are a lot of different regulations for different branches (financial, healthcare, stock exchanges, human resources, and so on) and in different countries - rules for an US-based company are not the same as rules for an European- or a Chinese company.
All logging and auditing facilities must be configured according to your local requirements. It is not where a sysadmin has right to say something. It is your local authorities who say the word.
After you have your requirements it is easier to decide what should be written in a configuration file to receive the information you require on the central logging server. If you can't analyze the received information, because you've never seen UNIX logs, you have to hire some experienced guy or can try to post example log entries (if they are not tooo sensitive for your organization) here and forum members will try to explain the logs to you.
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LEARN ABOUT DEBIAN
logger::syslog
Logger::Syslog(3pm) User Contributed Perl Documentation Logger::Syslog(3pm)
NAME
Logger::Syslog -- an intuitive wrapper over Syslog for Perl
DESCRIPTION
You want to deal with syslog, but you don't want to bother with Sys::Syslog, that module is for you.
Logger::Syslog takes care of everything regarding the Syslog communication, all you have to do is to use the function you need to send a
message to syslog.
Logger::Syslog provides one function per Syslog message level: debug, info, warning, error, notice, critic, alert.
NOTES
Logger::Syslog is compliant with mod_perl, all you have to do when using it in such an environement is to call logger_init() at the
beginning of your CGI, that will garantee that everything will run smoothly (otherwise, issues with the syslog socket can happen in
mod_perl env).
SYNOPSIS
use Logger::Syslog;
info("Starting at ".localtime());
...
if ($error) {
error("An error occured!");
exit 1;
}
...
notice("There something to notify");
FUNCTIONS
logger_init
Call this to explicitly open a Syslog socket. You can optionaly specify a Syslog facility.
That function is called when you use the module, if you're not in a mod_perl environement.
Examples:
# open a syslog socket with default facility (user)
logger_init();
# open a syslog socket on the 'local' facility
logger_init('local');
logger_close
Call this to close the Syslog socket.
That function is called automatically when the calling program exits.
logger_prefix
That function lets you set a string that will be prefixed to every messages sent to syslog.
Example:
logger_prefix("my program");
info("starting");
...
info("stopping");
logger_set_default_facility(facility)
You can choose which facility to use, the default one is "user". Use that function if you want to switch smoothly from a facility to
another.
That function will close the existing socket and will open a new one with the appropriate facility.
Example:
logger_set_default_facility("cron");
LOGGING
Logger::Syslog provides one function per Syslog level to let you send messages. If you want to send a debug message, just use debug(), for
a warning, use warning() and so on...
All those function have the same signature : thay take a string as their only argument, which is the message to send to syslog.
Examples:
debug("my program starts at ".localtime());
...
warning("some strange stuff occured");
...
error("should not go there !");
...
notice("Here is my notice");
LICENSE
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
COPYRIGHT
This program is copyright X 2004-2006 Alexis Sukrieh
AUTHOR
Alexis Sukrieh <sukria@sukria.net>
Very first versions were made at Cegetel (2004-2005) ; Thomas Parmelan gave a hand for the mod_perl support.
perl v5.12.4 2006-11-27 Logger::Syslog(3pm)