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Old 03-25-2013, 05:50 PM   #1
Nt_loader
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Network guys come on in, slow network speeds

The last few weeks our network speeds have been just horrible, currently our bonded T1 (3MB) is maxed out with 98% download. Funny thing is when I look at our router the traffic starts up around 8 am and stays pegged at 98% download until 5 pm when it drops to below 20%.

What tools can I use to help find the internal offender and bandwidth thief? We need to put a stop to this ASAP!

Thanks
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Old 03-25-2013, 05:51 PM   #2
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The last few weeks our network speeds have been just horrible, currently our bonded T1 (3MB) is maxed out with 98% download. Funny thing is when I look at our router the traffic starts up around 8 am and stays pegged at 98% download until 5 pm when it drops to below 20%.

What tools can I use to help find the internal offender and bandwidth thief? We need to put a stop to this ASAP!

Thanks
What type of Router are you currently using and what Security settings do you have?
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Old 03-25-2013, 05:52 PM   #3
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Old 03-25-2013, 06:00 PM   #4
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Wireshark. Filter by common media websites, P2P, and Skype ports.
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Old 03-25-2013, 06:03 PM   #5
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What type of Router are you currently using and what Security settings do you have?
Cisco 1841, not sure on on the security settings
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Old 03-25-2013, 06:11 PM   #6
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If it's a business grade connection you should be able to ask your ISP to send you a report of the traffic types, usage and times. The problem sounds like streaming media / P2P. The inconsiderate prat could at least set it to run overnight....
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Old 03-25-2013, 06:19 PM   #7
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Cisco 1841, not sure on on the security settings
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If it's a business grade connection you should be able to ask your ISP to send you a report of the traffic types, usage and times. The problem sounds like streaming media / P2P. The inconsiderate prat could at least set it to run overnight....
Someone is def streaming, downloading content etc... Now you can contact the isp's for the reports like he said...

If you have the same amount of computers connected to the router on the daily bases....You can assign the mac address to the router and only allow these computers to access the router...This can be a bit of work if you have alot of computers...

Besides assigning the mac address, you can also make the router invisible, meaning it wont be found if the usual person with a wifi device is searching for nearby wifi networks...If it's a hacker they can easily get through this... You can also change the password and add symbols to make it alot harder to guess etc these are all basics but these basics can stop that person from using your network..
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Old 03-25-2013, 06:50 PM   #8
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Do you guys have a proxy?
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Old 03-25-2013, 06:57 PM   #9
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Im going to give wireshark a try to see if I can figure out what is going on, I find it strange that it starts at 8 am and stops around 5. Someone is up to no good. We just installed a content filter and hope that helps a little but it wont stop the BYOD to work people. No proxy at this time.
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Old 03-25-2013, 07:01 PM   #10
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Does your wireless router have any ip trafficing? How big is your company? We were having the same issue, so I pulled one of the wireless access points, and the issue went away. It got so bad our bonded t1s were restarting from an overload of data. Then I had people admitting they were streaming music from there phone, but using the wireless.
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Old 03-25-2013, 07:01 PM   #11
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Old 03-25-2013, 07:19 PM   #12
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Does your wireless router have any ip trafficing? How big is your company? We were having the same issue, so I pulled one of the wireless access points, and the issue went away. It got so bad our bonded t1s were restarting from an overload of data. Then I had people admitting they were streaming music from there phone, but using the wireless.
Thats the first thing we did, change the access point password and only give it to one executive, no one else is using it.

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Orion Netflow.
Is that free?
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Old 03-25-2013, 07:34 PM   #13
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Do what our Moron IT does. Unplug ports from the switch until the traffic dies down.
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Old 03-25-2013, 07:36 PM   #14
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Thats the first thing we did, change the access point password and only give it to one executive, no one else is using it.



Is that free?
It's about $2000 maybe a bit less. It basically analyzes your network. Tells you who is using alot of bandwidth where etc..
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Old 03-25-2013, 07:42 PM   #15
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OP,

when you figure it out, tell us who the culprit is and what happens to him/her
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Old 03-25-2013, 07:47 PM   #16
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Do what our Moron IT does. Unplug ports from the switch until the traffic dies down.
I like this idea
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Old 03-25-2013, 07:59 PM   #17
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When I was working at Cisco before we were demo'ing a graphing feature to our customer. It sorted the top websites visited in terms of bandwidth used through the firewall. First three listings were all porn sites, lol.

We got an immediate feature request to identify by IP, haha.
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Old 03-25-2013, 08:31 PM   #18
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Setup SNMP trap and point router's log to it. You won't find anything free but there are bunch of 30-day trials and a month is more than enough to find the cause.
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Old 03-25-2013, 09:30 PM   #19
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Old 03-26-2013, 09:55 AM   #20
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When I catch who's doing this its going to be
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