I have two diffrent kind of Traps.(SNMPv2 & SNMPv3). mibs of SNMPv2 start from ".29723.100.3.1" & other SNMPv3 ones MIB starts from ".29723.500.3.1". Now i have updated one of my system configuration from SNMPv2 to SNMPv3 (i.e. ".29723.100.3.1" to ".29723.500.3.1"). & i have updated front end as well as backend of monitoring Server & also updated the values on Host Machine. but still it is not acquiring new configuration & i am receiving self generated heartbeat traps from my old SNMPv2 value.can you please help me out? how can i receive traps from same site.
sample trap as of now i am receiving is given below.
Sat Aug 22 2020 23:15:24 .1.3.6.1.4.1.29723.100.3.1 Warning "Status Events" 10.200.1.150 - 23610 SNMP DETECTION No SNMP Traps detected in the last=24 Hours. - heartbeatNotify
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Iam using CANoe v16 and simulating a configuration with a couple of CAPL nodes. I have been succesfully running the configuration for weeks now.
Since today morning, all I can get when trying to run the simulation is this error from System: "Local RT Kernel: Connection is lost" in the write window leading to crash.
I would like to know if anyone has encountered the same and how to tackle this problem . Thankyou
Update: Now after an hour or more, teh connection is established again on its own. Is it like a port for the connection was busy and now it is free again
About 5 days ago, OpenNMS Horizon 22.02 on Ubuntu 18.04.1 LTS stopped accepting traps from network elements. No changes were made to configuration or underlying operating system to my knowledge.
There are about 125 network elements, all Cisco, sending traps.
So far I have checked the following:
tcpdump shows the traps coming into the interface on port 162
Turned on Debug for trapd.log and incoming traps from network elements do not create any log entries
Traps sent with send-trap.pl from the localhost create traps that flow all the way to events
Traps sent with snmptrap either on localhost or another host create log entries that flow all the way to events. The other host is using the same interface that the network elements are using.
ss -lnpu sport = :162 shows an open UPD "UNCONN"
sudo lsof -i :162 shows a single listener java process
Startup of trapd does not seem to show any warnings in the log
I have verified that the ufw and iptables are off
I have updated OpenNMS to 22.04 and updated Ubunutu with no relief
Restarted OpenNMS many many times...
I moved Trapd startup after Asterisk in service-configuration.xml based on this
All of this seems similar to this. I think the last commenter on that thread asked about comparing the successful and unsuccessful traps in Wireshark which I have not done but all of the traps that are being sent have worked hundreds if not thousands of times until November 6th.
Is there anywhere else to look for errors as to why Trapd is not accepting traps? I think I have ruled out network issues.
I created a new Ubuntu 18.04 VM, updated it and then installed Horizon 23.01 fresh. I pointed my stream of traps at it and it behaves the exactly the same way, none of the traps create any log entries on the trapd.log with the level set to debug. Tcpdump shows the traps coming to the interface.
Issue Resolved.
The underlying operating system lost its static route for the subnet that the traps were coming from. OpenNMS had a route back to the subnet but not via the path that the traps were coming in from. Once the static route was restored, traps started working again and were flowing all the way to events.
In Zabbix Server 3, I have a linux host monitored through SNMP.
The SNMP OID of the monitored MIB is as below:
SNMPv2-SMI::enterprises.94.7.1.4.2.1.5.1 = STRING: "CLUSTER STARTED (RESTARTED)"
I have configured this SNMP OID to be monitored for every 10 minutes. The Zabbix server is sending a SNMP get-request and the linux host replies back. The timestamp is updated in this case in Zabix>Monitoring>Latest Data section of Zabbix dashboard
I also have an SNMP trap defined for this event.
I restarted the cluster in the linux host, which triggered an SNMP trap message to zabbix and the event is captured in /var/log/zabbix/snmptrapfmt.log of zabbix server. But the Zabix>Monitoring>Latest Data section of Zabbix dashboard still has old timestamp for latest data. The new value is not updated from SNMP trap.
Is there any separate configuration needed for this?
I am using zabbix appliance 3 as zabbix server
The first item you showed, the one that polls SNMP, should not be relevant for trap processing.
Regarding the second item (snmptrap), make sure you have started SNMP trapper (StartSNMPTrapper parameter in the server configuration file).
Also check that Zabbix server points at the location where you traps are written with the parameter SNMPTrapperFile.
If all that is configured, check the server log - if a trap is written there, it was not matched to your item - in that case, check your regexp against the trap data and make sure the IP address Zabbix sees the trap from matches the SNMP interface address for that item.
I need some assistance with these type of scanners, there seem to be many of them on the web but I can't seem to find specific details of what they are meant to achieve.
I understand that they are communicating on the SMTP port, but I am not certain of what type of information they are trying to get.
The reason I ask this is because I am currently investigating a SMTP VRFY Scanner. I have made the scanner to connect to a windows xp system but it states
Waiting for SMTP banner
220 testing221 Microsoft ESMTP MAIL Service, Version: 6.0.2600.2180 ready at Sun, 27 Sep 2015 19:04:44 +0100
testing221 corresponds to the domain on the SMTP virtual server, on the xp system.
The SMTP VRFY command is intended to allow a sender to verify the correctness of an email address without actually sending an email.
This feature was abused by spammers very early on. As a result, most SMTP servers are configured to ignore the command.
They are effectively useless for the public internet these days. You will find very few, if any, domains configured to support the command.
I want to configure SNMP traps on PFsense, to do it I have done below things.
Enable SNMP Demon (Without doing it it is not allowing to enable traps)
A. Given poling port number (161)
B. Given Read community string. (mypfsense)
Enable SNMP Traps
A. Given Trap Server IP. (192.168.0.100)
B. Given poling port number (162)
C. Given Read community string. (mypfsense)
On windows 2008 server I have install Ireasoning MIB Browser.
Turn on Trap receiver on port number 162.
But at here I was not getting any update on trap receiver so I have check through....
send test trap using ireasoning trap sender, and i got trap in trap receiver.
I was not getting PFSense traps, so then after I have
Add feature in server 2008 snmp service, and configure it as below.
A. services.msn > snmp service property > Security tab > accept community name -> added the community "mypfsense" as Read Only.
Then after I repeat the steps 4 and 5, both are behaving as it is.
So after all I am not getting traps of PFSense.
I am requesting you to please help me to configure it.
Note: I have check through MIB Browser that poling is working from the 2008 server it gives output of get next, walk, get bulk etc. etc...
Thanks and Regards,
Harshit Choksi.