howto log/monitor port-access?
since a few days vnstat shows curious high traffic on my NIC. alway at the sime time (vnstat -h).
18.04. 166.34 MB | 17,592,186,042,732 MB | 17,592,186,042,898 MB
any easy ideas how to log or monitor port access for a defined time period?
till now I could not determine any ominous programms....!