port numbers Flashcards by FlashCard Boy

FTP

20/21
Transfer files

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SSH

22
Remote CLI

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SSH File Transfer Protocol
SFTP

22
Uses SSH to encrypt file transfers

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TACACS+

49
Cisco, device AAA, encrypts entire payload

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DNS

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DHCP

67/68

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HTTP

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Kerberos

88
SSO, Windows network authentication protocol, mutual authentication

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POP

110
One-way communication with email servers, depicated

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IMAP

143, 993
Two way communication, also depricated

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SNIMP

161/162
Monitor and manage network devices

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LDAP

389
Manage and talk to directories

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HTTPS

443
HTTP that uses TLS for encryption

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LDAPS

636
Secure version of LDAP, uses TLS

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FTPS

can be 20/21 but also 989/990
FTP that uses TLS

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IMAPS

993
IMAP that uses TLS

POP3S

995
POP that uses TLS

RADIUS

1812,1813
AAA for network services, centralized authentication

Diameter

3868
Upgrade to RADIUS

L2TP

1701
Point-to-point connections like VPNs over UDP. Needs IPSec

SRTP

5004
Replaced RTP, used to stream audio and video using UDP

TCP

error checking

UDP

No error checking

PPTP

1723
Deprecated VPN

RDP

3389

PTP

1723 Very deprecated VPN