I would like to know if there's an open source application that can:
-Being open-source (obviously free, no cost at all)
-Check which ports are being used and check the bandwith used by each of them.
-Based on requirements above create a weekly report. With details of each prt per day and time specifications.
I have read about Ethereal for the Network Monitoring and JasperReports for the Report-creation-stage, but haven't gone much on details yet..
If my specifications cannot be met with a free app then I would like to say that I could work with Java to check which ports are being used, but I still don't know if Java could handle ALL the requirements... please, I would really like to have an answer for that.. Because I could start working on it right now but I want to be sure Java can have everything covered.
PD: If Java can't be a solution what would you suggest?
suggestions for you:
Colasoft Capsa Free: http://www.colasoft.com
Spiceworks: new user, cannot give link.
Or google: free traffic monitor
Related
Does anybody know where to find Sample Solarwinds SWQLs to get Health Data for Routers and Switches? If anybody can post any samples, would be of great help.
It's plausible that the easiest way to retrieve router/switch health data may be by configuring OID/MIB imports using the Universal Device Poller (UnDP) tool available on your primary poller.
Simple google searches can get you to recent unified MIB listings, which you can collect from the target devices and display in node-related pages of your discretion and design.
It's admittedly tedious, but once they're in they're good until you replace the hardware, so long as you're willing to commit to SNMP polling of the device. Further the tool allows you to perform trial-and-error testing before committing the MIB import you're working on. Note for reference I'm referring to NPM11.5/12. Earlier versions should have this tool up to a point, but no promises.
I have a working asterisk freepbn server running several conference call rooms. I would like to be able to play specific audio files from the server over the conference when selected from a simple interface (I'm thinking HTML) but have no idea where to start.
The rough plan is that in time critical conferences the leader could select audio files that remind people how long is left "15mins remaining ". Later I play to script the playback but for now I am wondering if this is possible.
Thanks for any help,
Andy
Avatar-like systems are quite complex solutions.
There are no easy way do that. Very likly need expert/guru help.
You can start reading from this articles
http://www.voip-info.org/wiki/view/Asterisk+channels
http://www.voip-info.org/wiki/view/asterisk+manager+events
http://www.voip-info.org/wiki/view/Asterisk+auto-dial+out+deliver+message
I manage to send all my servers logs to a central syslog server. Now What? How do i make sense of this avalanche of data? does anybody know any good opensource syslog reader tool or any paid ones such as sawmill?
You might want to check out Sagan (http://sagan.io). Basically, it takes your logs as they come in and "detect" when bad things are happening. Sagan works a lot like the Snort IDS engine, but with logs instead of packets. Things that are detected can then be forwarded to a GUI like Snorby, Sguil, etc.
It's an open source project (GNU/GPLv2) and runs on *nix platforms. More information can be found at:
http://sagan.io
I know baretail, A free real-time log file monitoring tool
http://www.baremetalsoft.com/baretail/
Never tried it, but heard good things about it:
http://www.ossec.net/
It's perhaps more than what you asked for, but your question doesn't make exactly clear what you are looking for in the logs.
For displaying of the logs on a GUI you could check LogAnalyzer (http://loganalyzer.adiscon.com/)
Logstash, elasticsearch, and kibana is a nice modern stack for analyzing logs.
I want to build a decentralized, reddit-like system using P2P. Basically, I want to retain the basic capabilities of reddit, but make it decentralized, to make it more robust and immune to censorship. This will also allow people to develop different clients to match the way they want to browse it.
Could you recommend good p2p libraries to base my work on? They should be open-source, cross-platform, robust and easy to use. I don't care much about the language, I can adapt.
Disclaimer: warning, self-promotion here !!!
Have you considered JXTA's latest release? It is probably sufficient for what you want to do. Else, we are working on a new P2P framework called Chaupal, but it is not operational yet.
EDIT
There is also what I call the quick-and-dirty UDP solution (which is not so dirty after all, I should call it minimal).
Just implement one server with a public address and start listening for UPD.
Peers located behind NATs contact the server which can read how their private IP address has been translated into a public IP address from the received datagrams.
You send that information back to the peer who can forward it to other peers. The server can also help exchanging this information between peers.
Then peers can communicate directly (one-to-one) by sending datagrams to these translated addresses.
Simple, easy to implement, but does not cover for lost datagrams, replays, out-of-order etc... (i.e., the typical stuff that TCP solves for you at the IP stack level).
I haven't had a chance to use it, but Telehash seems to have been made for this kind of application. Peer2Peer apps have a particular challenge dealing with the restrictions of firewalls... since Telehash is based on UDP, it's well suited for hole-punching through firewalls.
EDIT for static_rtti's comment:
If code velocity is a requirement libjingle has a lot of effort going into it, but is primarily geared towards XMPP. You can port off parts of the ICE code and at least get hole-punching. See the libjingle architecture overview for details about their implementation.
Check out CouchDB. It's a decentralized web app platform that uses an HTTP API. People have used it to create "CouchApps" which are decentralized CouchDB-based applications that can spread in a viral nature to other CouchDB servers. All you need to know to write CouchApps is Javascript and learn the CouchDB API. You can read this free online book to learn more: http://guide.couchdb.org
The secret sauce to CouchDB is a Master-to-Master replication protocol that lets information spread like a virus. When I attended the first CouchConf, they demonstrated how efficient this is by throwing a "Couch Party" (which is where you have a room full of people replicating to the person next to them simulating an ad hoc network).
Also, all the code that makes a CouchApp work is public by default in special entities known as Design Documents.
P.S. I've been thinking of doing a similar project, but I don't have a lot of time to devote to it at the moment. GOD SPEED MY BOY!
I am looking for suggestions on doing some simple monitoring of an ASP.Net web farm as close to real-time as possible. The objectives of this question are to:
Identify the best way to monitor several Windows Server production boxes during short (minutes long) period of ridiculous load
Receive near-real-time feedback on a few key metrics about each box. These are simple metrics available via WMI such as CPU, Memory and Disk Paging. I am defining my time constraints as soon as possible with 120 seconds delayed being the absolute upper limit.
Monitor whether any given box is up (with "up" being defined as responding web requests in a reasonable amount of time)
Here are more details, things I've tried, etc.
I am not interested in logging. We have logging solutions in place.
I have looked at solutions such as ELMAH which don't provide much in the way of hardware monitoring and are not visible across an entire web farm.
ASP.Net Health Monitoring is too broad, focuses too much on logging and is not acceptable for deep analysis.
We are on Amazon Web Services and we have looked into CloudWatch. It looks great but messages in the forum indicate that the metrics are often a few minutes behind, with one thread citing 2 minutes as the absolute soonest you could expect to receive the feedback. This would be good to have for later analysis but does not help us real-time
Stuff like JetBrains profiler is good for testing but again, not helpful during real-time monitoring.
The closest out-of-box solution I've seen is Nagios which is free and appears to measure key indicators on any kind of box, including Windows. However, it appears to require a Linux box to run itself on and a good deal of manual configuration. I'd prefer to not spend my time mining config files and then be up a creek when it fails in production since Linux is not my main (or even secondary) environment.
Are there any out-of-box solutions that I am missing? Obviously a windows-based solution that is easy to setup is ideal. I don't require many bells and whistles.
In the absence of an out-of-box solution, it seems easy for me to write something simple to handle what I need. I've been thinking a simple client-server setup where the server requests a few WMI metrics from each client over http and sticks them in a database. We could then monitor the metrics via a query or a dashboard or something. If the client doesn't respond, it's effectively down.
Any problems with this, best practices, or other ideas?
Thanks for any help/feedback.
UPDATE: We looked into Cloudwatch a bit more and we may focus on trying it out. This forum post is the most official thing I can find. In it, an Amazon representative says that the offical delay window for data is 4 minutes. However, the user says that 2 minute old data is always reliable and 1 minute is sometimes reliable. We're going to try it out and hope it is enough for our needs.
Used Quest software and it seemed to be a good monitoring solution. Here is a link.
http://www.quest.com/application-performance-monitoring-solutions/
Also performance monitoring of Windows may also help.