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zlawr01's version from 2017-09-11 15:02

Section 1

Question Answer
FTP data portTCP 20
FTP control portTCP 21
SSHTCP 22
SCP (uses SSH)TCP 22
SFTP (uses SSH)TCP 22
TelnetTCP 23
SMTPTCP 25
TACACS+TCP 49
DNS name queriesUDP 53
DNS zone transfersTCP 53
memorize

Section 2

Question Answer
TFTPUDP 69
HTTPTCP 80
KerberosUDP 88
POP3TCP 110
SNMPUDP 161
SNMP trapUDP 162
NetBIOSUDP 138
NetBIOSTCP 139
IMAP4TCP 143
LDAPTCP 389
memorize

Section 3

Question Answer
HTTPSTCP 443
SMTP SSL/TLSTCP 465
IPsec (for VPN with IKE)UDP 500
LDAP/SSLTCP 636
LDAP/TLSTCP 636
IMAP SSL/TLSTCP 993
memorize

Section 4

Question Answer
POP SSL/TLSTCP 995
L2TPUDP 1701
PPTPTCP 1723
Remote Desktop Protocol (RDP)TCP/UDP
Microsoft SQL ServerTCP 1433
memorize