Ports Flashcards
1
Q
PORT 20/21
A
TCP
FTP = File Transfer Protocol
20 = Data / 21 = Authorization
2
Q
Port 22
A
TCP
SSH
Encrypted CLI to remote SCP/SFTP
3
Q
Port 23
A
TCP
TELNET
Plaintext to CLI (not secure)
4
Q
Port 25
A
TCP
SMTP
“Send Mail to People” outgoing mail - not secure
5
Q
Port 49
A
TCP & UDP
TACACS
AAA for NAC
6
Q
AAA
A
Authenticate
Authorize
Audit (Account)
7
Q
NAC
A
Network Access Control
8
Q
Port 53
A
UDP
DNS
Zone Transfer
9
Q
Port 69
A
UDP
TFTP
Trivial FTP = small files/not secure
10
Q
Port 80
A
TCP
HTTP
Not secure/regular internet
11
Q
Port 88
A
UDP or TCP
Kerberos
Single Sign On (SSO)
12
Q
Port 110
A
TCP
Pop3
Incoming Email/Not Secure
13
Q
Port 123
A
UDP
NTP
Network Time Protocol
14
Q
Port 137-139, 445
A
UDP or TCP
SMB - Server Message Block (NetBIOS)
15
Q
Port 143
A
TCP
IMAP
Incoming EMail, Plain text,
