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Posts published in June 2020

tcpdump find source ip with most bytes

some times we receive volumetric traffic from single source IP (out of our networks) towards one destination in our network,
is there anyway to find it with tcp dump ?
thank you.

Reports & Events Monthly Calendar – July 2020

“Reports & Events” is a monthly tip sheet for the news media that highlights selected meetings of interest and reports from the National Academies of Sciences, Engineering, and Medicine.

Understanding the Well-Being of LGBTQI+ Populations

The National Academies of Sciences, Engineering, and Medicine are currently conducting a study to review available data on the well-being of LGBTQI+ populations and future research needs for this community.

Why is an IPv6 interface required to have a link-local address?

According to Link-local address on Wikipedia:

In IPv4, link-local addresses are normally only used when no external, stateful mechanism of address configuration exists, such as the Dynamic Host Configuration Protocol (DHCP), or when anoth...

is DIAMETER-EAP Authentication method mutual or one way?

i'm studying the DIAMETER-EAP authentication method and i would like to know if this method can be considered mutual authentication or "one way" authentication.
In my opinion this is one way because the unauthenticated devices au...

Show ports in use on Catalyst 3570

I picked up a used C3570 and am new to IOS. I am trying to ask the switch to show which ports are in use. My searches lead to the command "show modules" but that's refused by the switch (and command line help suggests no such c...

How to check cable without ping?

Is there any way to check if a network link is physically working, without using ping?

Recently bought a Power-Line-Communication device, and I wanted to test if it works. Before pinging the machines through the PLC, I just tried to conne...

Why do we need to aggregate frames into a multiframe in GSM networks?

I'm struggling to understand the need for frame aggregation into the multiframe and other higher level frames.
What exactly do we gain with the aggregation? Is this for synchronisation purposes across all the channels? Is this simplifying ...