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I'm operating a neighbourhood WIFI network in a rural environment.
Now I'm looking fo a monitoring tool to run on a server (Windows or Linux) which would track bandwidth, uptime (clients as well as internet connection), etc...
Most of this information is exposed via SNMP by my routers and access points, so SNMP support is required.
Additional features should be:
Graphical data representation
free license
So what's the best choice for me?
Edit These are the tools mentioned so far:
MRTG
Munin
Nagios
Zenoss Core
ntop
cacti
ZABBIX
MRTG is probably the easiest to setup. If your router has SNMP (as you mention), to setup it's a single command:
cfgmaker --output=mrtg_myrouter.cfg public#1.2.3.4
MRTG is good for high-bandwidth routers and the likes. It's not great for other data (it can be coerced into graphing most things, but it's a little unintuitive to setup)
For monitoring other stuff I like Munin. I would describe it again, but I posted an answer a while ago here (about graphing disc-usage).
Munin can of course graph network usage, and easily pull data via SNMP (in fact it's the recommended setup for grabbing data from Windows-based servers - run a SNMP daemon on the Windows machine, and have Munin connect to this). The graphs are also prettier than MRG, I would say (clearly the most important factor..)
There's an example installation of MRTG here, and Munin here
IMHO, Cacti is easiest to install and use.
Zabbix is interesting, but harder to use.
And here is a very comprehensive list of all network monitoring tools.
Not sure if this fits your usage but a lot of web hosting provider uses Nagios for network monitoring
Zenoss Core is free and open source. It keeps RRD graphs (like other monitoring tools mentioned here). To monitor parameters other than basic network bandwidth (and up state), the switch or router SNMP definitions and MIBs should be available as a ZenPack. Runs on a Linux (virtual?) server. Uses Google Maps to display link status.
I have been using ntop it is free on linux and for purchase if you want a windows binary and worked pretty well for us
I had the same question last week and tried several options.
For basic snmp graphing needs, cacti is great, but graphing apache, mysql, etc. is a bit too hard I think.
ntop is also a nice tool, but has a different usecase than the other ones in your list.
You should look at Zenoss. The Core version is FOSS, userfriendly, and very powerful. I had no need for the Enterprise version, but your needs may differ.
It does graphing, monitoring and alerting of all the basic stats, but download some ZenPacks and you can easily add Apache, MySQL or many other stats. All configuration can be done via the GUI. The interface is clear and responsive and allows for easy management of very large networks.
In short, I'm glad I never spent much time on Nagios, because I believe Zenoss is the best option available.
Also consider CactiEZ on a VM or small server, it is a baremetal CentOS 6 based system.
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I have set up a VPN on a home server (I am using Wireguard in a docker container running on open media vault). My goal is to connect to my network shares from my windows Laptop when I'm on the go.
I set up the VPN and I was able to connect to OMV, both via PuTTy and the web interface, from my Laptop (while not connected directly to my home wifi).
However for some reason windows cannot detect any of the network shares I have set up on OMV
I tried to modify all the windows setting that came to my mind and googled a fair bit but I'm out of ideas.
Looking forward to any possible solutions.
Edit:
I can access the share without a problem when I am directly connected to my home network.
I just tried to access the folder, while connected through the VPN, by typing the full path into the "adress bar" in file explorer, By doing this I managed to connect to the folder and use the files.
But I still can't map the networkdrive... So it really seems to be a settings problem, but I still have no idea.
All of my the other devices that are on the network aren't showing up either while connected through the VPN.
One possible issue that I once ran into, is that the latest versions of windows stopped supporting SMB 1.0. Fortunately, you can explicitly re-enable them.
In the start menu, open "Turn windows features on/off".
A pop-up will allow you to enable also version 1.0 of SMB. I would suggest to enable the "Client" and "Automatic Removal", but you won't need the "Server".
That could possibly solve the problem, assuming that your other devices use older SMB versions.
You may also want to check these settings ...
The Solution was btw. pretty simple:
I was able to map the drive after manually entering the ip adress to file explorer. (in the format \192.168.x.xxx)
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I am making a Adobe Air software which needs to work on Windows, Mac and Linux. One of the issues that has confused me is the registration/licensing process.
Basically, I want users to try out the full version of software for a month and then buy if they find it useful. What I am not able to figure out is how the licensing would work on all these platforms.
There are no registries in Mac and Linux where I can store the trial information.
If I somehow maintain things locally in a db, post trial, if the user simply uninstalls and re-installs the software, the trial would start again for 30 days.
Don't want to store things in filesystem as that's not even close to actual authentication.
Doing an online activation of the software is a little resource consuming and has network dependency, so that option is also out of scope.
What way should I choose? what other options do I have? Does adobe provide any support for this... any 3rd party libraries that I can use for free?
I use LimeLM (https://wyday.com/limelm) to do licensing for my Adobe Air app (Windows and Mac, no linux). Like you I have a 30 day trial, LimeLM has a trial feature which is tied to the hardware, so uninstalling/reinstalling won't give users another free trial.
LimeLM requires network activation BUT you can allow for grace periods, so someone must connect to the network, say, once in 30 days of use to activate.
I agree with the above post that EncryptedLocalStore is a good idea as well.
Unfortunately the licensing options for Adobe AIR is limited. LimeLM is functional and cheap (they don't take a cut of purchase price). I looked at NitroLM, which is very expensive (I think they take 30% of purchase price) and very complicated - I could never make sense of it. Zaqon also is out there. I didn't like the way their licensing interface looked to our users. LimeLM was the most flexible.
Have you tried EncryptedLocalStore? Data stored in ELS remains even after app uninstallation.
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I have upwards of 30 Dell GX2xx models doing nothing. I've decided on using them to build a cluster, but I am lost as far as getting started. I've used ClusterKnoppix, and even straight OpenMosix in the past, but those projects are, very sadly, dead now.
I've checked out Xen, to an extent. I don't know if Xen is the solution I need. I'd like to have the ability to spin up a few VMs (when I need) in a server pool, with the VMs having the ability to run just off of resources in the pool, leaving me without the care of which node they run on.
I need some insight here... Thanks all!
Xen is not itself going to manage the whole cluster.
It will act on every single machine to instantiate/manage/delete the VMs.
You can have a look at Eucalyptus if you want to build that kind of private cloud solution with open-source software.
I would also recommend that you use OpenStack that tends to be the successor of Eucalyptus.
Have you checked out XCP, I find that it's really easy to start up a virtual cluster with this software.
Have you looked at such projects as OpenAIS, Corosync, DRBD and Pacemaker? They are all apart of the Linux High Availability project (http://www.linux-ha.org). They offer many different configuration options for numerous types of servers (IE. MySQL, Apache, Xen, etc.).
They have custom scripts (LSB and OCF) that are ran in place of your standard init scripts and assume the roles of these init scripts. I have included a detailed guide for setting up a Xen HA cluster on OpenSuse 11.1 below for your reference. The configuration of the Linux HA components should be the same from distro to distro, except that the package names to be installed will vary, as well as the location of the specific configuration files. The command line tools should be the same as well as functionality. Hope this helps.
http://www.howtoforge.com/installation-and-setup-guide-for-drbd-openais-pacemaker-xen-on-opensuse-11.1
I would like to develop a Network Inventory application that works on any operating system.
Reports on every possible resource attacehd to a network.
Reports all pertinent details of hardware and software.
Thats (and i hate to use the phrase) my "End Game".
However I am running before i can crawl here.
I have no experience of this type of development, e.g. discovering a computers hardware and software settings.
I've spent almost two weeks googling and come up short! :-(.
So I am turning to you to ask these questions:-
My first step is to find an existing open source project i can incorporate into my own code that extracts the fine grained details i am after, e.g. EVERYTHING there is to know about the hardaware and software on a single machine.
Does this project exist? or do i have to develop that first?
Have i got to write all this in C?
I am guessing getting this information about a computer is going to be easier than for printers, scanners, routers etc... e.g. everything else you would find attached to a network.
Once i have access to a single computers details i then need to investigate how i can traverse an entire newtork of printers, scanners, routers, load balancers, switches, firewalls, workstations, servers, storeage devices, laptops, monitors, the list goes on and on
One problem i have is i dont have a 1000 machine newtork to play on!
Is there any such resource available on theinternet? (is that a silly question?)
Anywho, if you dont ask you wont find out!
One aspect iam really looking forward to finding out how to travers the entire network,
should i be using TCP/IP for this?
Whats a good site, blog, usergorup, book for TCP/IP development?
How do i go about getting through firewalls?
How many questions can i ask in one go? :-)
My previous question on this topic ended up with PYTHON being championed as the language/script to go with to develop this application in.
Having looked at a few PYTHON examples they all seemed to be related to WINDOWS networks
and interrogating Windows Management Instrumentation (WMI). I had the feeling you cant rely on whats in WMI, and even if you can that s no good for UNIX netwrks.
Surely there exist common code for extracting hardware and software details from a computer? Why cant i find it on the internet?
Pease help?
Theres no prizes though :-(
Thanks in advance
I would like to appologise if i have broken forum rules or not tried hard enough on my own before asking for assistance.
I just would like to start moving forward with this as its one of the best projects i have been involved with.
I am inspired by the many differnt number of challenges involved and that if i manage to produce a useful application at the end of it it would hopefully be extremely helpful to many people.
That sit
Thanks in advance
DD
as a software vendor of a discovery solution, I can just say: Respect, that you want to start a new one :-). Just in case you are interested in what it could look like: http://www.jdisc.com
Now to some of our experience:
Programming Language:
I wouldn't write it in C. Use Java or .NET. Those languages have great advantages when it comes to tracking down errors or problems. For instance, in Java (and I guess also in .NET), you can see the stack trace when something is failing. For some pieces of code (e.g. WMI access), you might need to use C++ or C (e.g. access to native APIs from Microsoft). Use a native interface or a COM bridge from Java. In .NET, it should even be easier to access the Windows APIs).
Devices:
well, network printers, router, and switches are actually easier to discover. They usually expose their information via SNMP. SNMP is pretty easy to use and pretty robust. Getting information from Windows (or even Unix) systems is a bit trickier. Protocols can be blocked, misconfigured, messed up... We had cases, where WMI was simply hanging when requesting data from a remote device.
Test Devices:
Since we are also a smaller company, we also do not have 1000 different devices to test with. But, there are some things that might help:
a) For SNMP devices use a SNMP simulator. We use MIMIC 9.0 from Gambit Solutions and we are pretty happy with it. You can import SNMP walks from network devices and simulate the device as if it would be in your network.
b) Secondly, use virtualization whenever possible. With VMware, you can install Windows, Linux, or even Solaris. We also use a project called GNS3 to emulate Cisco Routers, Firewalls or Juniper routers.
c)You can test the rest of the devices only, if you have a customer that helps you with testing and implementing new devices.
This are just some ideas to start with. But I have to tell you, that it is not trivial and it takes a lot of time....
Hope that you got some ideas to start with...
I don't know that it's open source, but we use Spiceworks (http://www.spiceworks.com) here as an IT management platform. You may get some use out of exploring that.
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At my job we make & sell websites. Usually we install our .NET C# based site on a customer's server and maintain and support it remotely. However, every once in a while, for bigger development works and just to make things simpler (and faster!), we will copy the site to a local server.
This is great, but has one pain - moving the site back to the customer. Now, If nothing was change on the customer's copy - no problem. However, it is the sad truth that sometime (read more often than I would like) some fixes were needed to be applied on the production server. Either because the customer needed it NOW or simply because it was major bug.
I know that you can easily apply those bug fixes to the local copy as well, but this is an error prone process. So I'm setting my hopes on a distributed version control to help synchronize the two copies.
Here is what I need:
Easy to install - nothing else needed except the installer and admin rights.
Can integrated in an existing website as a virtual directory and works on port 80 - no hassle with new DNS required.
Excellent software
That's it. Any ideas?
Some comments on the answers
First, thanks! much appreciated.
I've looked at Mercurial and Bazaar and both look very good. The only caveat is the installation as a virtual directory on IIS. Mercurial, as far as I understand, use a special protocol (wire) and Bazaar needs and addition of python extensions. Is there another system which is easier to integrate with IIS? I'm willing to take a performance hit for that.
I'd look at either Mercurial or Bazaar. I'm told Git also works on windows, but I suspect the windows port is still a second class port at best.
You'll probably need to be able to run python scripts on your webserver to host either of them.
Maybe not exactly what you request but checkout DeltaCopy which is a windows version of rsync. You can also read about another rsync solution here
I can also vouch for Mercurial. Simple to use and powerful to boot!