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Monitor network devices to identify bandwidth hog?

LoneWolf_53

Cap'n Crunch
iHF Master Craftsman
iHF Veteran
Advisor
WCG Team Member
#1
OK so up until a couple of months ago my monthly bandwidth usage has always been between 13 and 20GB.

I have a cable modem which is connected to a Cisco EA3500 router plus I have another D-Link router that is being used as a hub on my home network.

A few days ago I checked my bandwidth usage and for the last two months it has jumped to 120-130GB

I can't think what would suddenly be using that much bandwidth.

I have added a tablet to my list of devices and my upstairs tenants Apple TV box since my broadband speed is much faster than his and my signal stronger so it prefers to connect to my network.

I just don't see how it could be using that much bandwidth though as they just don't watch TV that much.

What I'd like to do is somehow monitor my network and try to identify which device is responsible for this increase in usage.

What would be the best way for me to accomplish this without having to go purchase anything?

FWIW I do have something called PRTG I just installed but haven't really a clue as to how to use it.

Any help or tips would be appreciated.

Thanks..........
 

LoneWolf_53

Cap'n Crunch
iHF Master Craftsman
iHF Veteran
Advisor
WCG Team Member
#6
Just to clarify, I'm looking to identify which device on my home network (of 14 devices) is eating all the bandwidth.

I'm not trying to figure out which program on my computer is causing the problem. My suspicion is that it's the Apple TV box but I'd just like to somehow track how much bandwidth each device is consuming so I can be certain it's not malware or someone hacking into my network.

I just figure going from an average of 15GB per month to suddenly 130GB is pretty substantial considering I've not changed my habits any and my tablet that I added doesn't get used enough to create such a jump.

If possible I'd like to monitor usage from my computer.
 

Lord Chance

iHelpForum Jester & Door Greeter
iHF Veteran
Advisor
WCG Team Member
#8
If I understand your need LoneWolf, You may be able to find the information you are looking for by checking your router's status page. If you are using your router as a DHCP server, which is default in most, to hand out IPs to your devices then it may be logged by your router. It depends on what router you use. My Buff Tech uses the DD-WRT firmware so it is capable of logging traffic. Maybe these links will be helpful.

http://www.whoisonmywifi.com/more-info/additional-info/monitoring-a-wireless-network/
http://www.howtogeek.com/192654/how...andwidth-usage-and-avoid-exceeding-data-caps/
https://www.softperfect.com/products/networx/
 

LoneWolf_53

Cap'n Crunch
iHF Master Craftsman
iHF Veteran
Advisor
WCG Team Member
#9
If I understand your need LoneWolf, You may be able to find the information you are looking for by checking your router's status page. If you are using your router as a DHCP server, which is default in most, to hand out IPs to your devices then it may be logged by your router. It depends on what router you use. My Buff Tech uses the DD-WRT firmware so it is capable of logging traffic. Maybe these links will be helpful.

http://www.whoisonmywifi.com/more-info/additional-info/monitoring-a-wireless-network/
http://www.howtogeek.com/192654/how...andwidth-usage-and-avoid-exceeding-data-caps/
https://www.softperfect.com/products/networx/
My router is a Cisco EA3500 if that helps.
 

Lord Chance

iHelpForum Jester & Door Greeter
iHF Veteran
Advisor
WCG Team Member
#10
My router is a Cisco EA3500 if that helps.
Your Cisco router's manual is basic but it appears that your router supports logging. See the (How to configure and use logs) section in your manual. If you have misplaced it then you can find it here.
http://support.linksys.com/en-us/support/routers/EA3500
I can not tell you what information your router will log. Also it is not the easiest way to keep track. I apologize Mate if I am not being much help. It has been years since I have had to think about this issue and even then it was on a corporate scale using hardware monitoring.