outgoing traffic

[Santander]

small LAN 5PCs, internet connected via ADSL router. ADSL router network
utility show there is a huge outgoing traffic in network. Whereas no one
computer not use internet heavily.
Is there utility showing which computer and which application use this
traffic?

 

[John John (MVP)]

Almost all third party firewalls will give you that information or you
can use port monitoring utilities like WireShark or Nirsoft's CurrPorts
http://www.nirsoft.net/utils/cports.html or SysInternals TCPView
http://technet.microsoft.com/en-us/sysinternals/bb897437.aspx

John

 

[Thee Chicago Wolf]

small LAN 5PCs, internet connected via ADSL router. ADSL router network

utility show there is a huge outgoing traffic in network. Whereas no one
computer not use internet heavily.
Is there utility showing which computer and which application use this
traffic?

Is this a WiFi enabled router as well? If so, is anyone scamming your
free WiFi connection? Check the MAC addresses and IPs of all your
office computers and compare against the MACs shown in the DHCP table
of the router. If you see someone who doesn't belong, at least write
down the MAC address down for your records and then use the router's
config to block that MAC address or just turn off WiFi.

If not WiFi, you can easily determine where the traffic is coming from
the good old fashioned way by unplugging everyone and plugging them
back in one by one until you see the traffic light go nuts. That'll
help you localize the offender.

- Thee Chicago Wolf