Bandwidth Problem

luldefaltenin · Dec 4, 2014, 9:54 AM

Hi everyone, i have some Issues with my bandwidth. Always full : Graph 1
But the lan output does not match the in from wan. It's like something in my network send a request to the exterior to flood my firewall.
All traffic come from akamai and others cache servers : graph 2

Any ideas ?

KOM · Dec 4, 2014, 3:57 PM

Do you only have the two interfaces, WAN and LAN? Were both graphs open at the same time? If you only have WAN open and then open the LAN graph later, they won't be in sync as far as the graph time is concerned. You can use the Interface and Sort By options to get different lists of your traffic.

luldefaltenin · Dec 4, 2014, 4:08 PM

Graphs are opens in the same time for the graph1.

KOM · Dec 4, 2014, 4:19 PM

The external IP addresses using the most bandwidth are Akamai & Level3 caching servers. Are you running Squid cache? Is it possible that a Windows Update or some other large blob is being downloaded to your Squid cache? That would explain high bandwidth into WAN that isn't being passed out to LAN.