Port Numbers Flashcards
1
Q
1
A
ICMP
UDP
2
Q
7
A
Echo
TCP/UDP
3
Q
9
A
WakeOnLAN
TCP/UDP
4
Q
19
A
Chargen
TCP/UDP
5
Q
20
A
FTP Transfer
6
Q
21
A
FTP control
TCP
7
Q
22
A
SSH / SFTP
TCP
8
Q
23
A
Telnet
TCP
9
Q
25
A
SMTP
TCP
10
Q
42
A
WINS replicate
TCP/UDP
11
Q
47
A
PPTP VPN
TCP/UDP
12
Q
49
A
TACACs+
TCP
13
Q
50
A
ESP / IPSEC
TCP
14
Q
53
A
DNS
TCP
15
Q
67
A
DHCP Server
UDP
16
Q
68
A
DHCP Client
UDP
17
Q
69
A
TFTP
UDP
18
Q
80
A
HTTP
TCP
19
Q
88
A
Kerberos
UDP
20
Q
110
A
POP3
TCP
21
Q
119
A
NNTP
UDP
22
Q
123
A
NTP
UDP
23
Q
135
A
RPC / DCE endpoint mapper
TCP/UDP
24
Q
137
A
WINS
TCP/UDP
25
Q
138
A
Netbios Datagram Service
TCP/UDP
26
Q
139
A
SMB
TCP/UDP
27
Q
143
A
IMAP
TCP/UDP
28
Q
161
A
SNMP
UDP/TCP
29
Q
389
A
LDAP
TCP
30
Q
443
A
HTTPS (SSL/TLS/FTPS)
TCP
31
Q
445
A
SMB
TCP
32
Q
500
A
IPSEC: IKE / ISAKMP
TCP/UDP
33
Q
636
A
Secured LDAP (LDAPS) (TCP)
34
Q
989
A
FTPS (FTP over TLS/SSL DATA)
TCP/UDP
35
Q
990
A
FTPS (FTP over TLS/SSH Control)
TCP/UDP
36
Q
991
A
FTPS
TCP
37
Q
1645
A
Radius Authentication
UDP
38
Q
1646
A
Radius Accounting
UDP
39
Q
1701
A
L2TP
TCP
40
Q
1812
A
Radius Authentication
UDP
41
Q
1813
A
Radius Accounting
UDP
42
Q
3389
A
RDP / Terminal Services
TCP
43
Q
4500
A
IPSEC: IKE / ISAKMP
UDP
