00:01
Hello students, so here again is surveillance nmap scans on localhost and scanme .nmap .org so scan on the localhost.
00:09
So here the three scans are nmap scans using the flag ssflag.
00:15
So this flag uses tcp syn packets to determine which ports are open.
00:20
The results show that all 65535 ports are closed.
00:25
So with the help of this we can find out this particular port is closed.
00:29
Nmap scan using stflag.
00:32
So this scan uses tcp connect packet to determine which ports are open.
00:37
So here 65535 ports are closed.
00:41
So results show that all are closed.
00:44
So nmap scan using suflag.
00:48
So this uses udp packet to determine which ports are open.
00:52
So the results show all are closed.
00:54
So these are the scans on the host localhost.
00:57
Now scan on the scanme .nmap .org.
01:01
So here nmap scan using the ssflag.
01:06
So this scan shows the following ports are open tcp port 80 and 443 udp port 53.
01:13
So key difference between the results on my machine and the scanme .nmap .org.
01:19
The scan on the scanme .nmap .org shows that several ports are open while the scan on my machine shows that all ports are closed.
01:28
This is because scanme .nmap .org is a public server that is designed to be scanned.
01:33
The scan on the scanme .nmap .org shows that the tcp port 80 is open while the http port which is expected as the scanme .nmap .org is a web server.
01:47
The scan on scanme .nmap .org shows that the udp port 53 is also open which is a dns port...