Shrirang_ports

Question 1

TCP/UDP 53

Answer 1

Domain Name System (DNS) Zone Transfer

Question 2

TCP/UDP 135

Answer 2

Microsoft RPC Endpoint Mapper

Question 3

UDP 137

Answer 3

NetBIOS Name Service (NBNS)

Question 4

TCP 139

Answer 4

NetBIOS Session Service (SMB over NetBIOS)

Question 5

TCP/UDP 445

Answer 5

SMB over TCP (Direct Host)

Question 6

UDP 161

Answer 6

Simple Network Management protocol (SNMP)

Question 7

TCP/UDP 389

Answer 7

Lightweight Directory Access Protocol (LDAP)

Question 8

TCP/UDP 3268

Answer 8

Global Catalog Service

Question 9

TCP 25

Answer 9

Simple Mail Transfer Protocol (SMTP)

Question 10

TCP/UDP 162

Answer 10

SNMP Trap

Question 11

UDP 500

Answer 11

ISAKMP/Internet Key Exchange (IKE)

Question 12

TCP/UDP 5060, 5061

Answer 12

Session Initiation Protocol (SIP)

Question 13

TCP 143

Answer 13

IMAP

Question 14

TCP 20,21

Answer 14

FTP 20 for data and 21 for command

Question 15

UDP 69

Answer 15

TFTP

Question 16

UDP 67,68

Answer 16

DHCP

Question 17

TCP 22

Answer 17

SSH, SFTP

Question 18

TCP, UDP 3389

Answer 18

RDP

Question 19

TCP 1720

Answer 19

H.323

Question 20

UDP 123

Answer 20

NTP server

Question 21

TCP 110

Answer 21

POP

Question 22

TCP 23

Answer 22

Telnet

Question 23

LDAPS

Answer 23

636