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Monitor uplink?

Posted on 2011-02-22
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Last Modified: 2012-05-11
Hi Experts,

I have a comcast internet connection with 40Mbps (business class) for my office with 10 users. I'd like to have a free tool or at least give me 30 days trial before buy that can help me to monitor my uplink from my firewall to comcast. Or something that can monitor bandwidth which my users download/upload from internet. Any suggestions?


Thanks.
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Question by:SJCA
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Ernie Beek earned 300 total points
ID: 34952152
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Author Comment

by:SJCA
ID: 34952400
Hi,

I just downloaded the PRTG and isntalled. I just started discovering my network. How do I monitor my firewall bandwidth that facing to internet? Thanks.
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Expert Comment

by:Ernie Beek
ID: 34952429
What do you use as a firewall?
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Author Comment

by:SJCA
ID: 34953403
sonicwall pro 2040.
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Expert Comment

by:Ernie Beek
ID: 34954791
Ok.

Make sure you have SNMP enabled (to the inside) on the sonicwall.
Go to the webinterface of prtg and log in.
Go to: add sensors manually.
Create a new device (and group if necessary).
Go to add device in the new group.
Give the ip address of the device (the sonicwall) and select 'Automatic device identification'.

PRTG will then discover the device and return all the sensors it found. After that select the outside interface and start monitoring.
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Expert Comment

by:group0
ID: 34955329
Odmon (http://www.odmon.com) is a free hosted SNMP monitoring service where you can setup the graphing you're after without having to run an always-on machine.
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Author Comment

by:SJCA
ID: 34955458
Hi Erniebeek,

I'm able to monitor the bandwidth of my sonicwall now. Last question, when I see a high traffic, how do I know what machine is causing the high traffic from PRTG?

Thanks alot.
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Expert Comment

by:Ernie Beek
ID: 34955579
You'll have to set up a sensor for each of the users machines as well to monitor the bandwidth, that way you can compare the traffic flows.
Speaking of flows. You might want to look at the netflow capabilities (not sure if sonicwall supports that), that way you can get far more info (per protocol) on what is going through.
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Expert Comment

by:digitap
ID: 34955857
@SJCA :: login to your sonicwall and go to System > Status. on the left hand side, review your licensed products.  are you licensed for viewpoint?  if so, this is free download from your mysonicwall account and it will give you detailed reports on per user bandwidth utilization.
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Author Comment

by:SJCA
ID: 34955967
What is the name of the sensor that I need to add for each of the users machines to monitor the bandwidth?

I don't think sonicwall supports netflow but cisco does and unfortunately we don't have any cisco devices.

If sonicwall doesn't have netflow then there is no way that i can find out who is using the most bandwidth?

Thanks.
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Expert Comment

by:digitap
ID: 34955984
so, are you licensed for viewpoint?  http:#a34955857
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Expert Comment

by:Ernie Beek
ID: 34956403
Well as I said you can monitor the user machine's as well. So try that.

And don't disregard digitap's comments (he isn't a Genius for nothing...).
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Expert Comment

by:digitap
ID: 34956430
@erniebeek :: you're moving pretty quick yourself!  >GRIN<!
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Expert Comment

by:Ernie Beek
ID: 34958844
Hehehe, thx.  EE is rather addictive.
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Author Comment

by:SJCA
ID: 34959979
Digitap,

I don't have license for viewpoint yet, but i do have 30 days trial for viewpoint. I'm going to activate it and play around before decide to buy it.

I just downloaded viewpoint and will install it on a stand alone windows server. How hard to set up viewpoint server?

Thanks.
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Assisted Solution

by:digitap
digitap earned 200 total points
ID: 34960521
it's not that hard.  once installed, go to the sonicwall > log > syslog and check the viewpoint override checkbox.  then go to log > viewpoint and put the IP address of the viewpoint server.  check the enable viewpoint checkbox.  what i like to do additionally here is enable name resolution under log > name resolution.  select the type you want, DNS; DNS  and netbios; etc. then, put the ip of an internal DNS server.

then, go to your viewpoint server and login.  i believe the default credentials is admin password.  you'll have to register your sonicwall within viewpoint.  i have included a kb below for installing viewpoint.  i also included the admin guide.

https://www.fuzeqna.com/sonicwallkb/consumer/kbdetail.asp?kbid=7628
https://www.fuzeqna.com/sonicwallkb/consumer/kbdetail.asp?kbid=7531

one thing you'll want to remember to do is go into viewpoint and go to configuration > summarizer settings.  check the boxes of the information you want to see.  then, wait.  it will collect the data and summarize it into reports.  if you get stuck anywhere, please post here and we'll work through it.  good luck!
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