Shadowing Practice: How to configure port security on cisco switch | Port security - Learn English Speaking with Video

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Hello friends, welcome to my youtube channel, this is Prasad and today we will look at port security configuration on Cisco switches.

So basically port security enables

you to configure each switch port with a unique list of the mac addresses of the devices

that are authorized to access the network through that port.

This security enables individual ports to detect, prevent and log attempts by unauthorized devices to communicate through the switch.

Configuring the IP address of Class C network.

Enable configure terminal interface range fastethernet 0 slash 1 to 5.

Now we need to configure the switch port as an access

port using the switch port mode access command by default all ports are in dynamic mode

you can see here past ethernet is a dynamic port

so type the command switch port mode access

then activate port security on the switch port with the switch port port security command switch port port security

now switch port port security question mark

Here are the some options as edging MAC address maximum violation.

So I am choosing MAC address first?

First option 48 bit MAC address.

This indicates that you can enter the MAC address manually

and sticky means it is a port security feature that learns MAC addresses on an interface and retains the MAC information.

When you enter this command, the interface converts all the dynamic secure MAC addresses

including those that were dynamically learned before sticky learning was enabled to sticky secure MAC addresses.

Next command is switch port port security maximum.

Max secure addresses.

For security reason I want to allow only one identified device so I am selecting one.

Now we need to set violation command switch port, port security, violation.

Here are three options protect, restrict, shutdown.

We can either use restrict shutdown or protect port security commands.

So protect mode drop the packets with unknown source MAC addresses

until you remove enough secure MAC addresses to drop below the maximum value.

So we have already set the max value as 1.

An interface is allowed only one mac address of the source device.

Restrict mode performs the same function as protecting and shutdown causes the interface to enter an error disable state immediately.

Port will be shut down.

So I am choosing restrict mode, no shut and write show running config.

You can see here that no MAC address has been detected by any interface gate.

So let's wait for 30 seconds or check if your connectivity is fine.

Connectivity is working fine.

Navigate the MAC address on the interface.

Now I am going to create some violations so connecting this laptop to port number 0 5

now check the connectivity status see the connectivity is not established

now connect the cable again your previous device

we can get the reply from the device

so we are done with the port security configuration thanks for watching see you in the next video

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Vocabulary and speaking notes for this lesson

This speaking lesson is built on the video “How to configure port security on cisco switch”. The speaker keeps coming back to these words: port, mac, security, switch, address. This video has 42 sentences and 482 words to shadow. The speech runs for 5:25. The speaker talks slowly, about 89 words per minute, so there is time to copy every sound. Only 78% of the words are among the 3,000 most common in English, so the vocabulary is demanding.

Key vocabulary in this video

15 words from the video worth learning, with pronunciation and meaning:

Word	Pronunciation	Meaning
interface noun	/ˈɪn(t)ɚˌfeɪs/	The point of interconnection or contact between entities.
enable verb	/ɪˈneɪ.bəl/	To make somebody able (to do, or to be, something); to give sufficient ability or power to do or to be; to give strength or ability to.
violation noun	/ˌvaɪ.əˈleɪ.ʃən/	An infraction or a failure to follow a rule.
restrict verb	/ɹɪˈstɹɪkt/	To restrain within boundaries; to limit; to confine
connectivity noun		The state of being connected.
dynamic adjective	/daɪˈnæm.ɪk/	Changing; active; in motion.
sticky adjective	/ˈstɪki/	Tending to stick; able to adhere via the drying of a viscous substance.
shutdown noun		The action of stopping operations; a closing, of a computer, business, event, etc.
connect verb	/kəˈnɛkt/	To join (to another object): to attach, or to be intended to attach or capable of attaching, to another object.
detect verb	/dɪˈtɛkt/	To discover or find by careful search, examination, or probing.
configuration noun	/kənˌfɪɡ.əˈɹeɪ̯.ʃən/	The form of a thing, as depending on the relative placement of the parts of a thing's shape.
gate noun	/ˈɡeɪ̯t/	A doorlike structure outside a house.
establish verb	/ɪˈstæb.lɪʃ/	To make stable or firm; to confirm.
select verb	/sɪˈlɛkt/	To choose one or more elements of a set, especially a set of options.
indicate verb	/ˈɪndɪˌkeɪt/	To point out; to discover; to direct to a knowledge of; to show; to make known.

Phrasal verbs you will hear

Word	Meaning
shut down verb	To close, terminate, or end; to stop operating, either permanently or temporarily.

Grammar in this video

The structures the speaker uses most, with the exact words from the video:

Structure	In the video
Passive voice be + past participle — the focus is on what happens, not who does it	are authorized · was enabled · is allowed
Present perfect have/has + past participle — a past action that still matters now	have already set · has been detected

Pronunciation to watch

The “sh” and “zh” sounds: violation /ˌvaɪ.əˈleɪ.ʃən/, configuration /kənˌfɪɡ.əˈɹeɪ̯.ʃən/, establish /ɪˈstæb.lɪʃ/
Long words — get the stress right: violation /ˌvaɪ.əˈleɪ.ʃən/, configuration /kənˌfɪɡ.əˈɹeɪ̯.ʃən/, communicate /kəˈmjuːnɪkeɪt/, manually /ˈmænj(u)əliː/

How to practise with this video

Listen to the whole video once without speaking and note the words you do not know.
Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
Record yourself and compare with the original, paying attention to words like interface, enable, violation.

What is the Shadowing Technique?

Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.

Shadowing technique: read the full step-by-step guide →

Shadowing Practice: How to configure port security on cisco switch | Port security - Learn English Speaking with Video

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