Common Port Numbers Flashcards
Memorize those ports!
1
Q
Telnet
A
tcp/23
2
Q
Well-Known Port Range
A
1 to 1023
3
Q
tcp/636
A
LDAPS
4
Q
SMTP
A
tcp/25
5
Q
RDP
A
tcp/3389
6
Q
tcp/443
A
HTTPS
7
Q
tcp/25
A
SMTP
8
Q
TFTP
A
udp/69
9
Q
tcp/5060
A
SIP
10
Q
tcp/3389
A
RDP
11
Q
1024 to 49151
A
Registered Port Range
12
Q
SFTP
A
tcp/22
13
Q
udp/161
A
SNMP
14
Q
Registered Port Range
A
1024 to 49151
15
Q
udp/123
A
NTP
16
Q
udp/69
A
TFTP
17
Q
tcp/5061
A
SIP
18
Q
tcp/110
A
POP3
19
Q
POP3
A
tcp/110
20
Q
tcp/22
A
SSH
21
Q
LDAPS
A
tcp/636
22
Q
NTP
A
udp/123
23
Q
tcp/143
A
IMAP4
24
Q
DNS
A
udp/53
25
Q
SMB
A
tcp/445
26
Q
udp/67
A
DHCP
27
Q
49152 to 65535
A
Ephemeral Port Range
28
Q
HTTP
A
tcp/80
29
Q
udp/68
A
DHCP
30
Q
tcp/23
A
Telnet
31
Q
Ephemeral Port Range
A
49152 to 65535
32
Q
tcp/80
A
HTTP
33
Q
FTP
A
tcp20, tcp/21
34
Q
DHCP
A
udp/67, udp/68
35
Q
SNMP
A
udp/161
36
Q
tcp/20
A
FTP
37
Q
LDAP
A
tcp/389
38
Q
SIP
A
tcp/5060-5061
39
Q
H.323
A
tcp/1720
40
Q
tcp/389
A
LDAP
41
Q
SSH
A
tcp/22
42
Q
udp/53
A
DNS
43
Q
IMAP4
A
tcp/143
44
Q
HTTPS
A
tcp/443
45
Q
ARP
A
None!
46
Q
1 to 1023
A
Well-Known Port Range
47
Q
tcp/21
A
FTP
48
Q
tcp/445
A
SMB
