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Today's Topics:
1. Re: SNMP v3 example config (Oliver Gorwits)
2. SNMP v3 example config (Bavo Seesink)
3. Re: SNMP v3 example config (Jeroen van Ingen)
4. Re: deployment.yml : Cron jobs (Deshong, Kenneth)
--- Begin Message ---
Hi Palermo,
You might need to put your passwords in quotes. Also make sure that you
get the indentation correct. For example:
snmp_auth:
- tag: v3example
user: myusername
auth:
pass: 'password1'
proto: SHA
priv:
pass: 'secret2'
proto: AES128
https://metacpan.org/pod/distribution/App-Netdisco/lib/App/Netdisco/Manual/Configuration.pod#snmp_auth
regards,
oliver.
On 2014-11-25 11:34, Bavo Seesink wrote:
Hi all,
All of our network is using SNMP v3.
I tried all kinds of variations in the config that i found on :
http://search.cpan.org/~oliver/App-Netdisco-2.019002/lib/App/Netdisco/Manual/Configuration.pod#snmpver
[1]
-
tag: v3example
user: [user]
auth:
pass: [password]
proto: SHA
priv:
pass: [password]
proto: AES[128]
But i receive an error if i run the discover command for that switch.
i hope one of you can help me with this
Greetings
Palermo
Links:
------
[1]
http://search.cpan.org/~oliver/App-Netdisco-2.019002/lib/App/Netdisco/Manual/Configuration.pod#snmpver
--- End Message ---
--- Begin Message ---
Hi Oliver,
Thanks for the quick response.
The solution you suggested works. So i`m happy……..
although i received an error.
(code)
14607] 2014-11-25 02:26:26 debug [10.1.1.1] try_connect with ver: 3, class:
SNMP::Info::Layer3::C3550, comm: v3user:[username]
Error: passphrase chosen is below the length requirements of the USM (min=8).
[14607] 2014-11-25 02:26:26 debug Can't call method "error" on an undefined
value at /home/netdisco/perl5/lib/perl5/App/Netdisco/Util/SNMP.pm line 174.
[14607] 2014-11-25 02:26:26 debug [10.1.1.1] try_connect with ver: 3, class:
SNMP::Info, comm: v3user:[username]
Error: passphrase chosen is below the length requirements of the USM (min=8).
[14607] 2014-11-25 02:26:26 debug Can't call method "error" on an undefined
value at /home/netdisco/perl5/lib/perl5/App/Netdisco/Util/SNMP.pm line 174.
(code/)
i needed to add 1 character to the authentication phrase. it had 7 characters
but needed 8 characters. In the test environment i added 1 character. thats no
problem.
But in the production environment thats gonna be a hole different bol game.. Is
there a way around it?
Thanks in advanced
Greetings
Palermo
--- End Message ---
--- Begin Message ---
Hi Palermo,
A quick Google search indicates that this passphrase length is a
violation of an RFC; seems that it's hardcoded in the net-snmp libraries.
Looks like you have two options: either use longer passphrases in
production, or recompile net-snmp from source so it will allow such a
short passphrase.
Reply based on:
http://stackoverflow.com/questions/16838611/how-to-decrease-passphrase-length-for-snmp
http://www.net-snmp.org/dev/agent/keytools_8c_source.html
(around line 00140 and 00267 the error is generated, haven't checked
where the minimum is defined)
http://www.sans.org/reading-room/whitepapers/networkdevs/securing-snmp-net-snmp-snmpv3-1051
(page 7)
Regards,
Jeroen van Ingen
ICT Service Centre
University of Twente, P.O.Box 217, 7500 AE Enschede, The Netherlands
On 11/25/2014 12:56 PM, Bavo Seesink wrote:
Hi Oliver,
Thanks for the quick response.
The solution you suggested works. So i`m happy……..
although i received an error.
(code)
14607] 2014-11-25 02:26:26 debug [10.1.1.1] try_connect with ver: 3, class:
SNMP::Info::Layer3::C3550, comm: v3user:[username]
Error: passphrase chosen is below the length requirements of the USM (min=8).
[14607] 2014-11-25 02:26:26 debug Can't call method "error" on an undefined
value at /home/netdisco/perl5/lib/perl5/App/Netdisco/Util/SNMP.pm line 174.
[14607] 2014-11-25 02:26:26 debug [10.1.1.1] try_connect with ver: 3, class:
SNMP::Info, comm: v3user:[username]
Error: passphrase chosen is below the length requirements of the USM (min=8).
[14607] 2014-11-25 02:26:26 debug Can't call method "error" on an undefined
value at /home/netdisco/perl5/lib/perl5/App/Netdisco/Util/SNMP.pm line 174.
(code/)
i needed to add 1 character to the authentication phrase. it had 7 characters
but needed 8 characters. In the test environment i added 1 character. thats no
problem.
But in the production environment thats gonna be a hole different bol game.. Is
there a way around it?
Thanks in advanced
Greetings
Palermo
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--- End Message ---
--- Begin Message ---
I’m using version 2.029014
I looked in config.yml just for comparisons and I changed my deployment.yml to
this. Not sure if it will make any difference but I’ll wait and see.
schedule:
discoverall:
when: ‘5 7 * * *'
macwalk:
when:
min: 20
arpwalk:
when:
min: 50
nbtwalk:
when: '0 8,13,21 * * *'
expire:
when: '59 23 * * *'
From: Oliver Gorwits [mailto:[email protected]]
Sent: Monday, November 24, 2014 3:09 PM
To: [email protected]
Subject: Re: [Netdisco] deployment.yml : Cron jobs
Hi Ken,
First of all, which version of Netdisco are you running? In the latest version
there are some bug fixes which could apply in this situation.
Regards,
Oliver.
Sent from the moon.
On 24 Nov 2014, at 19:17, Deshong, Kenneth
<[email protected]<mailto:[email protected]>> wrote:
I’ve recently had some issues with NetDisco 2 not reliably tracking users via
IP address. For instance, I’m trying to find out which port a certain client is
attached to and I know their IP address.
I type in the IP address and NetDisco comes back with “no matching records”.
If I go to my router and type “show IP arp xx.xx.xx.xx” and will come back
with a MAC address and I can place that MAC address into NetDisco and it will
find the device…but without any IP info. Eventually these records will appear
but definitely not after 1 hour.
This is what my deployment.xml looks like. I want NetDisco to refresh IP and
MAC records at the top of the hour, the other at the bottom of the hour. Does
this look correct?
schedule:
discoverall:
when: '0 3 * * *'
macwalk:
when: '30 * * * *'
min:
arpwalk:
when: '0 * * * *'
min:
nbtwalk:
when: '0 2 * * *'
expire:
when: '59 23 * * *'
/Ken
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--- End Message ---
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