Port Numbers Flashcards
20,21
FTP-port 20 is control port for ftp and 21 is used by ftp to transfer files
22
Secure shell(ssh)-can be used to transmit data through remote connections
49
TACACS+- Cisco proprietary protocol used for A,A,A
53
DNS- resolves names to ips
67,68
DHCP-management protocol that’s assigns local ips to devices on internal net
80
HTTP- protocol used for web
443
HTTPS- Http over tls/ssl
88
Kerbos-network authentication protocol allowing for secure communication over insecure net
110
POP3-email protocol allowing email clients to communicate with email servers
143 , 993
IMAP -internet message access protocol, email protocol used to allow email clients to communicate, provides 2 way communication unlike pop3
161/162
SNMP-simple network management protocol, protocol used to manage network devices on ip networks
389
LDAP-lightweight directory access protocol- used to manages and communicate with directories
636
LDAPS-ldap over tls/ssl
989/990
FTPS- file transfer protocol secure- secure ftp over tls/ssl
993
IMAPS- IMAP secure, IMAP over tls /ssl
995
POP3S-POP3 secure
1812,1813
Radius-provides AAA for network services
3868
Diameter-upgrade to radius
5008
SRTP-replaced RTP and is used to stream voice and video using udp
25
SMTP
23
Telnet
3389
RDP- windows proprietary protocol for connecting 2 hosts remotely
1701
L2TP-used to create point to point vpn connections, needs to be used with IPsec for encryption, operates at data link layer and encapsulates at session layer
1723
PPTP-deprecated vpn protocol
