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IPsec, how to differentiate TCP and UDP

I read a little bit on the Wikipedia IPsec page.

I was intrigued by:

IPsec is an end-to-end security scheme operating in the Internet Layer
of the Internet Protocol Suite

I understand this as:

The packet sender an...

Difference between sniffer tools

I am unsure what the following networking tools do. They all seem to do a similar thing.

First some background. I am familiar with cisco IOS. I am doing some linux networking experimentation with virtual machines so I am trying to create ...

How broadcasting works on different networks?

I was reading DHCP ( RFC 2131 ), I have basic knowledge about Relay Agent and Broadcasting. But for Understanding DHCP in depth, I felt like I have to know Broadcasting and Relay Agent ( RFC 1542 ) in details. But could not f...

Dual Stack Network Configuration

I am trying to implement Dual Stack configuration of a network in Packet Tracer. I have two routers connected to each other both of these routers have one IPv4 client and one IPv6 client. The routers are configured to use bot...

How to synchronize MD5 digest between VTP Server and Client?

Follow up to this Q&A.

According to one of the answers it should be possible to solve a MD5 digest mismatch by synchronizing username, password and domain between VTP Client and Server and subsequently executing a VLAN change on the V...

Raw API data for Cisco Meraki CMX Dashboard

Has anyone worked with Meraki's CMX raw data feed and can help answer some questions?

I came here to ask because I have found no conversations about Meraki's CMX API elsewhere and I imagined that network engineers are still ...

How do VLANs affect the broadcast domain?

I'm repeating a "LAN Switching and Wireless" module in college and I'm looking over past exam papers in preparation for the repeat exam. One of the questions is

What is a broadcast domain? Using an example, explain how VLANs affect the...

Devices behind Catalyst 2960 not receiving DHCP addresses

I am having an issue with DHCP not traversing to devices behind a switch. I have many other switches deployed with nearly the same configuration that are able to receive a DHCP address. On this switch that I am having issues ...