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System monitoring with RMC/RSCT

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Operating Systems AIX System monitoring with RMC/RSCT
# 8  
Old 12-04-2014
Funny you should mention that...I am trying to write it up from the perspective of people that are familiar with snmp version 1 and I wanted to take an opportunity to educate myself and see that it works (so I am doing things like tcpdump before and after i turn on encryption).

Originally, I thought I could just take...

/usr/samples/snmpdv3/snmpdv3.conf

and be up and running without having to learn the details of the version 3 protocol and implement whatever level of security I want. I suppose if you are an expert in SNMP and have been keeping up the RFC's the sample snmpdv3.conf file makes sense.

I saw a few samples on the web but most seem to still configure the snmpdv3.conf at the lowest level of security (community string).

I think it's time for administrators to re-consider snmp again since it addresses traditional security issues; more importantly, it can save money. The configuration is a small challenge. Administrators--including me--need to invest the time in learning and matching the protocol to the level of security they need.

I will post my results. Thanks for the interest.
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LEARN ABOUT CENTOS

lwp::debug

LWP::Debug(3)						User Contributed Perl Documentation					     LWP::Debug(3)

NAME

       LWP::Debug - deprecated

DESCRIPTION

       LWP::Debug used to provide tracing facilities, but these are not used by LWP any more.  The code in this module is kept around
       (undocumented) so that 3rd party code that happen to use the old interfaces continue to run.

       One useful feature that LWP::Debug provided (in an imprecise and troublesome way) was network traffic monitoring.  The following section
       provide some hints about recommened replacements.

   Network traffic monitoring
       The best way to monitor the network traffic that LWP generates is to use an external TCP monitoring program.  The Wireshark program
       (<http://www.wireshark.org/>) is higly recommended for this.

       Another approach it to use a debugging HTTP proxy server and make LWP direct all its traffic via this one.  Call "$ua->proxy" to set it up
       and then just use LWP as before.

       For less precise monitoring needs just setting up a few simple handlers might do.  The following example sets up handlers to dump the
       request and response objects that pass through LWP:

	 use LWP::UserAgent;
	 $ua = LWP::UserAgent->new;
	 $ua->default_header('Accept-Encoding' => scalar HTTP::Message::decodable());

	 $ua->add_handler("request_send",  sub { shift->dump; return });
	 $ua->add_handler("response_done", sub { shift->dump; return });

	 $ua->get("http://www.example.com");

SEE ALSO

       LWP::UserAgent

perl v5.16.3							    2012-01-14							     LWP::Debug(3)