Ports (Well known & Other) Flashcards
Port and Protocol (TCP or UDP)
1
Q
FTP Data (active mode)
A
TCP 20
2
Q
FTP control port
A
TCP 21
3
Q
SSH
A
TCP 22
4
Q
SCP
A
TCP 22
5
Q
SFTP
A
TCP 22
6
Q
Telnet
A
TCP 23
7
Q
SMTP
A
TCP 25
8
Q
TACACS+
A
TCP 49
9
Q
DNS name queries
A
UDP 53
10
Q
DNS zone transfers
A
TCP 53
11
Q
TFTP
A
UDP 69
12
Q
HTTP
A
TCP 80
13
Q
Kerberos
A
UDP 88
14
Q
POP3
A
TCP 110
15
Q
SNMP
A
UDP 161
16
Q
SNMP trap
A
UDP 162
17
Q
NetBIOS
A
TCP/UDP 137 (TCP Rarely used), UDP 138, TCP 139
18
Q
IMAP4
A
TCP 143
19
Q
LDAP
A
TCP 389
20
Q
HTTPS
A
TCP 443
21
Q
SMTP SSL/TLS
A
TCP 465
22
Q
IPsec (for VPN with IKE)
A
UDP 500
23
Q
LDAP/SSL or TLS
A
TCP 636
24
Q
IMAP SSL/TLS
A
TCP 993
25
Q
POP SSL/TLS
A
TCP 995
26
Q
L2TP
A
UDP 1701
27
Q
PP2P
A
TCP 1723
28
Q
RDP
A
TCP/UDP 3389
29
Q
MS SQL
A
TCP 1433
30
Q
SSTP (SSL Tunnel)
A
443
