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  • Solution to route/proxy SNMP Traps (or Netflow, generic UDP, etc) for network monitoring?

    - by Christopher Cashell
    I'm implementing a network monitoring solution for a very large network (approximately 5000 network devices). We'd like to have all devices on our network send SNMP traps to a single box (technically this will probably be an HA pair of boxes) and then have that box pass the SNMP traps on to the real processing boxes. This will allow us to have multiple back-end boxes handling traps, and to distribute load among those back end boxes. One key feature that we need is the ability to forward the traps to a specific box depending on the source address of the trap. Any suggestions for the best way to handle this? Among the things we've considered are: Using snmptrapd to accept the traps, and have it pass them off to a custom written perl handler script to rewrite the trap and send it to the proper processing box Using some sort of load balancing software running on a Linux box to handle this (having some difficulty finding many load balancing programs that will handle UDP) Using a Load Balancing Appliance (F5, etc) Using IPTables on a Linux box to route the SNMP traps with NATing We've currently implemented and are testing the last solution, with a Linux box with IPTables configured to receive the traps, and then depending on the source address of the trap, rewrite it with a destination nat (DNAT) so the packet gets sent to the proper server. For example: # Range: 10.0.0.0/19 Site: abc01 Destination: foo01 iptables -t nat -A PREROUTING -p udp --dport 162 -s 10.0.0.0/19 -j DNAT --to-destination 10.1.2.3 # Range: 10.0.33.0/21 Site: abc01 Destination: foo01 iptables -t nat -A PREROUTING -p udp --dport 162 -s 10.0.33.0/21 -j DNAT --to-destination 10.1.2.3 # Range: 10.1.0.0/16 Site: xyz01 Destination: bar01 iptables -t nat -A PREROUTING -p udp --dport 162 -s 10.1.0.0/16 -j DNAT --to-destination 10.3.2.1 This should work with excellent efficiency for basic trap routing, but it leaves us completely limited to what we can mach and filter on with IPTables, so we're concerned about flexibility for the future. Another feature that we'd really like, but isn't quite a "must have" is the ability to duplicate or mirror the UDP packets. Being able to take one incoming trap and route it to multiple destinations would be very useful. Has anyone tried any of the possible solutions above for SNMP traps (or Netflow, general UDP, etc) load balancing? Or can anyone think of any other alternatives to solve this?

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  • SPS 2010 Prerequisite installer keep downloaded files

    - by elhombre
    Hi all In SharePoint 2010 there is a prerequisite installer. There are options to install the prerequisites from a local source. That's great, but is it also possible to tell the prerequitiinstaller to download the files and keep them in its prerequisite directory? I don't want to download the files manually as it is a big pain in the back to get these files from the Microsoft website.

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  • VMWare Player vs Workstation

    - by Anjisan
    What's the difference between VMWare Player vs Workstation? Is it that Player is for non-commercial use and workstation isn't? For someone who builds and tests applications at home for non-commercial use, is it worth paying for a Workstation license? Do I get any benefits over Player? (Note: I realize there's open source solutions like VirtualBox, but am more interested in the differences between Player and Workstation.) Thanks!

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  • Ubuntu: Unsupported Sources

    - by Scott
    What kind of software is available in that source tree ? Also what is the best way to see what kind of software is available in a repository ? I have always reluctant to enable it because I didn't want to wind up with an unstable system.

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  • connect remotely to apache2 on ubuntu 10.04

    - by ronakin
    I've apache2 server installed on a machine that connected to two different networks, therefore it has two different addresses: 192.168.1.111 (static ip on ethernet network) and 109.253.78.211. when connecting through 109.253.78.211 on the browser, the web pages are displayed perfectly, However, when connecting through 109.253.78.211 the web pages are displayed partially. I've not installed any firewalls. I'll really appreciate if you could redirect me to checks I should commit to reach the source of the problem. Thank you :)

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  • Personal email server

    - by celil
    I would like to set up a personal email server. I am currently using Gmail, but I am becoming increasingly concerned at the amount of data that I share with Google. I would like to migrate all of my email to my personal server. Is there an easy to use, secure, open source alternative to Gmail that can be ran on personal servers? I do not need a web interface to my email as I usually access it via IMAP.

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  • Personal email server

    - by celil
    I would like to set up a personal email server. I am currently using Gmail, but I am becoming increasingly concerned at the amount of data that I share with Google. I would like to migrate all of my email to my personal server. Is there an easy to use, secure, open source alternative to Gmail that can be ran on personal servers? I do not need a web interface to my email as I usually access it via IMAP.

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  • dbase 5 odbc driver

    - by george9170
    am running server 2008, i need to set up in the odbc data source administrator a dbase 5.0 driver. Where can i download the driver from? Thank you for taking the time to help

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  • Mac - Windows VPN

    - by user61652
    Hi, I am trying to setup a secure vpn server (Ipsec l2tp) on windows so I can connect to it using my mobile mac or any other windows pc. It seems it is quite a hassle to do this. Does anyone have any good suggestions, maybe a software or open source. Note that I have not yet encountered a piece of ware that can run on both windows and mac. I would ideally prefer a single UI rather than learn two. BR

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  • How do you install Console2 on Windows 7

    - by Brian Boatright
    I downloaded the source and binaries from http://sourceforge.net/projects/console/files/ In the binaries help file it makes reference to a setup file but there is none. The list of files included in the Console-2.00b145-Beta.zip is: Microsoft.VC90.CRT (folder) console.chm Console.exe console.xml ConsoleHook.dll FreeImage.dll FreeImagePlus.dll How do I setup Console2 on Windows 7?

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  • Excel: copy cell formatting in equation

    - by dassouki
    If I make an equation: ' on cell A2 =A1 Is there a way to make A2 have the exact same formatting as A1 and not just the value? EDIT: i.e. I want a FORMULA that copies both the value and the format/including conditional formatting of the original/source cell

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  • How to scale out image hosting/serving?

    - by Continuation
    I asked this question on stackoverflow and it was suggested that I try it here: I'm building a website where users can upload photos and I'd also convert uploaded photos into thumbnails. Planning ahead, if the website gets popular, how do I scale it out so that the images (both original and thumbnails) will be stored in and served from multiple servers? Maybe a cluster? Is there any open source software that would help me in this? Thanks.

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  • Lighttpd wont restart due to an fastcgi.server error

    - by Mint
    Here is what comes up when I try to restart lighttpd user:/# /etc/init.d/lighttpd restart Stopping web server: lighttpd. Starting web server: lighttpdDuplicate config variable in conditional 0 global: fastcgi.server 2010-02-13 22:08:30: (configfile.c.907) source: /etc/lighttpd/lighttpd.conf line: 179 pos: 1 parser failed somehow near here: (EOL) failed! Lighttpd restarts fine when I comment out fastcgi config lines.

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  • Splunk is fantastically expensive: What are the alternatives? [closed]

    - by samsmith
    Possible Duplicate: Alternatives to Splunk? This has been discussed, but it has been several months, so it may be time to revisit it: Earlier discussion RE Splunk alternatives For the record, Splunk rocks. But the pricing is simply beyond what we can consider (When I spoke with Splunk today, the cost for a system to index 5gb/day of data is over $30,000.) That is more than we spend on SQL Server (by a large multiple), more than we spend on a rack of servers (by a multiple), etc. etc. The splunk sales team is correct (that for $30K we get more value and functionality than if we spend the same building our own system), but it doesn't matter. The splunk cost is simply too high (by a multiple). Soooooo, we are looking around! Is anyone out there building a splunk like system? Our basic need: Able to listen for syslog messages on multiple udp ports Able to index the incoming data in an async way Some kind of search engine Some kind of UI An API to the search engine (to embed in our console) We currently need to index 3-5gb/day, but need to be able to scale to 10gb/day or more. We do not need a lot of history (30 days is fine). We use Windows 2008 and 2003 servers. Thanks for your thoughts! UPDATE: We spent two weeks researching commercial and open source options. Our conclusion: Write our own (we are a software company... we know how to write things). We built a great system built on mongodb and .NET that gives us the functions we needed from MongoDB in about one engineering week. We have now completed our implementation. We use two Mongodb servers (master and slave), and are able to log and index any amount of log data (5gb/day, 15gb/day, etc), limited only by disk space. OBSERVATIONS: This space needs a solid solution that is $1000-3000 flat rate. The licensing models used by the commercial firms are based on a "milk the data center ops guys" models. That is their right (of course!), but it leaves a HUGE space open for someone to come in underneath them. My guess is that in another year or two there will be a good open source solution that will be really usable. Thank you all for your input (even if it was self promotion).

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  • server health monitor

    - by arash
    hello i need to a server monitoring solution. the solution must be able to alert when a server goes down also i want, the solution be flexible to work with various servers for example it must be able to monitor servers like, webserver,application server, DB server and ... i want to know is any open source solution is available for me? thanks in advance

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  • Where do I find nmake for Windows 7

    - by manyxcxi
    I'm trying to compile a Perl source and I can't seem to find a version of nmake that works with Windows 7 64 bit. I've searched all over Microsoft's website and my Googlefu seems to be failing me. Can I use a different compiler- if so suggestions/resources? I'm a native Linux user so pardon my ignorance

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  • System for public internet access

    - by Pydev UA
    I'm looking for solution for a public wifi spot.. I want that all people who connect to our wifi network should be redirected to special website(after they open any internet page) where they should reed and agree with our terms of services(by clicking a button). After that they can open any internet page. I have a router and a linux box with site(with agreement page ready), so I'm looking for some software/or hardware solution for this, preferable open-source.

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  • Consolidated queue for video on demand?

    - by Herb Caudill
    It's great having lots of video on demand options, but actually choosing something to watch is turning into a mess - I have to jump from one website or application to another. I'd like to have a single queue where I can add and prioritize movies and TV I want to watch from any source: iTunes purchases, iTunes rentals, Netflix on demand, Amazon video on demand, Hulu, etc. I'd like the consolidated queue to be accessible from Front Row on my Mac Mini. Does such a thing exist?

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