Port Nunbers , are these enough ?

satishtech

Are these Port Numbers enough, do I need to
add some more or remove some ?

Port Numbers

Both TCP and UDP:
7-ECHO
20-FTP Data
21 -FTP Control
22 -SSH
23 -TELNET
25 -SMTP
53 -DNS SERVER(TCP), DNS Clinet (UDP)
67- Bootstrap Protocol (BOOTP Server)
68 - Bootstrap Protocol (BOOTP Client)
69 -TFTP
79 - Finger
80 -HTTP
137-NetBIOS Name service
138-NetBIOS Datagram service
139-NetBIOS Session Service
162-SNMP Trap(both TCP UDP)
443 -HTTPS -both TCP UDP
546 - both TCP and UDP DHCPv6 client
547 - both TCP and UDP DHCPv6 server

Only TCP:
110 -POP3
179 - BGP
1080 - Socks

Only UDP:
161- SNMP

EdTheLad

No, you need to know every port number ever assigned. Download the rfc and keep memorizing. You should be good in about a month.

fredrikjj

Funny story, someone asked me about ssh's port number in an interview and I said 443 and then changed my mind to 22 a few seconds later. Might have cost me the job, who knows.

PaPaJ

If you're studying for the Cert exam just the common well known ports will do (but I would add port 110 [POP3] to the list). If you are preparing for a job you should study the entire list of ports as suggested above. During an interview you may be asked about some lesser know ports and what they are for.

Just from personal experience. I interviewed with two separate companies for intern positions and I was asked about port 547 - DHCP Server, 194 - IRC - Internet Relay Chat, and 445 - Microsoft DS. Needless to say the only one I knew was port 547 - DHCP Server. So it would pay to know the list of ports.

satishtech

every port ever assigned , ahh haaa
Yes I meant only for the CCENT Exam.

crazboy84

For the exam you really need to only know the basic ports. I made this to help me memorize them for the A+ and it works for the CCNA as well.
https://quizlet.com/45201939/a-tcp-ports-flash-cards/

Jasiono

fredrikjj wrote: »

Funny story, someone asked me about ssh's port number in an interview and I said 443 and then changed my mind to 22 a few seconds later. Might have cost me the job, who knows.

Well that to me would show that you know a little beyond the ports, considering HTTPS uses SSH, I can see where that would have been answered as you answered it, depending on the frame of mind you are in.