Original subtitles

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Scanning specific ports within map and map P ports and target IP so you don't want to scan just the

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top 20 the top 100 or the top 1000 ports within map instead we can set the ports that we want to scan.

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This way we can scan faster and way more specifically unless otherwise stated Our scans will be valid

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for the E DCP ports if we want to perform a UDP port scan.

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We'll need to specify it on the command line.

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Remember in our previous lesson we saw how to do it so to perform a UDP port scan we need to use the

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S U parameter and the command line.

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For example let's scan some of the DCP and UDP ports on our meter spoil the gems that we've already

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set up.

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So we can perform the most commonly used ECPAT edge TGP port and DCP for 4 3 HD UDP s port and UDP fifty

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three which is the DNS port scans in sequence.

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Okay so one virtual box of Kelly Linux open meadows portable and log in accounting Linux Ms open terminal

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and write the command and map 10 dot 0 dot to dot for P fifty three eighty four for three presenter

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and this scan results appear so let's have a look.

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So it shows the DP eighty and four four three boards now since we didn't enter the UDP parameter the

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UDP port did not scan so let's do a UDP port scan and have a look.

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And map as you P fifty three eighty four four three press enter and here you can see DCP does not show

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ports eighty and four for three since we enter the UDP parameter only the UDP port shows up as a skinny

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result now both DCP and UDP port scanning can be performed at the same time.

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So when you want to do that you write this into the command line and map SD as you e fifty three eighty

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four four three and press enter and there you have it both DCP and UDP ports show up in the port scan

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results

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scanning a specific port range within map now what was the port before so we learned what is used for.

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Well there are sixty five thousand five hundred and thirty five port numbers in most computer systems

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with any map.

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We can scan.

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Well a wide range of ports.

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Right.

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So this method can be used if this scan results based on the default port numbers are negative so this

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means a well-known services are always targeted.

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Actors often give priority to scanning these ports like the SO in this case by changing the number of

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these ports maybe an attack can be prevented because many hackers use ready made attack systems they're

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always going to scan the default for so for this reason the security level can be increased just by

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changing the port number of a service used within the application.

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For example port number four for three HDTV ask can be changed to 14 for four 3.

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In this case attacks to the age DDP service will be prevented.

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That map also allows you to scan specific port ranges for these such situation.

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So over this and map port P port number port number and press Enter now please make a note that unless

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you specify otherwise our scans will be valid for the DCP ports.

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And if we want to perform a UDP port scan we just need to specify it on the command line in our previous

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session.

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I believe we saw how to do this to perform a UDP port scan.

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We just need to use the SMU parameter in the command line so let's do an example will scan for specific

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DCP and UDP ports on the meds.

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Floyd will the MS that we've already set up so open up virtual box open in Linux open meadows portable

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and log in to the Kelly Linux VM open terminal and write this command and map 10 dot 0 dot to dot for

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P 1000 dash 2000 right center and this year end results come up.

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So here you can see it scan the DCP 1000 a DCP 2000 port range and it shows the results now both DCP

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and UDP scanning of course can be performed at the same time when you want to do that.

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You just put this on the command line and map SD as you p 1000 to 2000 and press enter and there you

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have the scan results of the TTP and UDP ports between 1000 and 2000.