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
138
Netbios Datagram Service
| TCP/UDP
26
139
SMB
| TCP/UDP
27
143
IMAP
| TCP/UDP
28
161
SNMP
| UDP/TCP
29
389
LDAP
| TCP
30
443
HTTPS (SSL/TLS/FTPS)
| TCP
31
445
SMB
| TCP
32
500
IPSEC: IKE / ISAKMP
| TCP/UDP
33
636
```
Secured LDAP (LDAPS)
(TCP)
```
34
989
FTPS (FTP over TLS/SSL DATA)
| TCP/UDP
35
990
FTPS (FTP over TLS/SSH Control)
| TCP/UDP
36
991
FTPS
| TCP
37
1645
Radius Authentication
| UDP
38
1646
Radius Accounting
| UDP
39
1701
L2TP
| TCP
40
1812
Radius Authentication
| UDP
41
1813
Radius Accounting
| UDP
42
3389
RDP / Terminal Services
| TCP
43
4500
IPSEC: IKE / ISAKMP
| UDP
